Uvicorn logo

Download websites that use Uvicorn

17,152 live sites using Uvicorn right now

Server Software · since 2017 · open source

17K sites Dataset updated · 2026-07-28
Categories Web servers
🔒 Get the list
Requires a dataset purchase

About Uvicorn

webatla tracks 17,152 live websites using Uvicorn — 0.0% of every site we index. Download the full list of websites that using Uvicorn technology as a daily JSONL export — every record includes the domain plus DNS, WHOIS, IP address, hosting country and global rank.

Uvicorn is a lightning-fast ASGI (Asynchronous Server Gateway Interface) web server implementation for Python, built on top of uvloop and httptools. It is designed to serve Python web applications and APIs built with async frameworks such as FastAPI and Starlette, providing high concurrency and throughput compared to traditional WSGI servers like Gunicorn.

Uvicorn has become the de facto standard production server for FastAPI applications and is widely used in the Python web development ecosystem for building high-performance REST APIs and microservices. It supports HTTP/1.1 and WebSockets, and can be run standalone or behind a process manager like Gunicorn with a Uvicorn worker class.

At a glance

LanguagePython
LicenseBSD
First release2017-01-01
All figures as of Jul 28, 2026
17,152 Sites detected
0.0% Of all websites

Database preview of Uvicorn sites

Uvicorn detection is a value inside the Technologies column. Two datasets carry it — switch between them to compare what's included.

webatla-technologies-uvicorn-2026-07-28.jsonl.zst · 17,152 rows · 14 columns Daily fresh export
DomainTLD suffixTLDDomain typeHTTP statusIP addressCountry by IPSocial networksTechnologies last data checkedTechnologiesPR valueHarmonic valueDomain creation dateDomain expiration date
dmm.comcomcomICANNHTTP 20013.248.196.236US{"youtube":["https://youtube.com/user/dmmofficialchannel"],"facebook":["https://facebook.com/DMMcom"],"instagram":["https://instagram.com/dmm.com_official"],"x-twitter":["https://twitter.com/DMM_com"]}2026-05-06Imgix, Python, Uvicorn, Sendgrid, Google Ads, Open Graph, Google Optimize, Google Analytics, Google Workspace, Amazon CloudFront0.0000059664617,719,6281995-06-282028-06-27
nfb.cacacaICANNHTTP 20035.182.164.155CA{"tiktok":["https://tiktok.com/@nfb_onf"],"youtube":["http://youtube.com/nfb"],"facebook":["http://facebook.com/nfb.ca"],"linkedin":["https://linkedin.com/company/national-film-board-of-canada"],"instagram":["https://instagram.com/onf_nfb"],"x-twitter":["http://twitter.com/thenfb"]}2026-07-02PWA, RSS, Python, Mailgun, Uvicorn, Google Ads, Open Graph, Reddit Ads, Microsoft 365, Facebook Pixel0.0000011451717,510,2762000-11-062031-08-25
polarsteps.comcomcomICANNHTTP 20052.16.161.12IE{"reddit":["https://reddit.com/r/Polarsteps"],"tiktok":["https://tiktok.com/@polarsteps"],"instagram":["https://instagram.com/polarsteps"]}2026-07-04HSTS, React, HTTP/2, Python, Uvicorn, Zendesk, Mixpanel, Atlassian, CookieYes, Detectify0.00000066202317,638,6402010-06-042027-06-04
onf.cacacaICANNHTTP 20035.182.164.155CA{"tiktok":["https://tiktok.com/@nfb_onf"],"youtube":["https://youtube.com/onf"],"facebook":["https://facebook.com/onf.ca"],"linkedin":["https://linkedin.com/company/national-film-board-of-canada"],"instagram":["https://instagram.com/onf_nfb"],"x-twitter":["https://twitter.com/onf"]}2026-07-03PWA, RSS, Miro, Python, Mailgun, Uvicorn, Google Ads, Open Graph, Reddit Ads, Microsoft 3650.00000054890517,295,1782000-11-062031-08-25
pomodoro-tracker.comcomcomICANNHTTP 200178.212.13.133RU{"github":["https://github.com/klen/pomodoro-tracker-locales"]}2026-07-04PWA, HSTS, HTTP/2, Python, Uvicorn, Cloudflare, Open Graph, Google AdSense, Google Site Verification, Cloudflare Browser Insights0.00000035041614,304,9242015-08-232028-08-23
DomainTLD suffixTLDDomain typeHTTP statusIP addressCountry by IPSocial networksTechnologies last data checkedTechnologiesDNS last data checkedDNS StatusDNS recordsPR valueHarmonic valueRDAP/WHOIS last data checkedRDAP/WHOIS methodDomain creation dateDomain expiration dateDomain last changedRegistrarRDAP/WHOIS RecordResponse Status RDAP/WHOIS
dmm.comcomcomICANNHTTP 20013.248.196.236US{"youtube":["https://youtube.com/user/dmmofficialchannel"],"facebook":["https://facebook.com/DMMcom"],"instagram":["https://instagram.com/dmm.com_official"],"x-twitter":["https://twitter.com/DMM_com"]}2026-05-06Imgix, Python, Uvicorn, Sendgrid, Google Ads, Open Graph, Google Optimize, Google Analytics, Google Workspace, Amazon CloudFront2026-07-23TRUE{"A":["13.248.196.236"],"MX":[{"host":"alt1.aspmx.l.google.com","priority":5},{"host":"alt2.aspmx.l.google.com","priority":5},{"host":"alt3.aspmx.l.google.com","priority":10},{"host":"alt4.aspmx.l.google.com","priority":10},{"host":"aspmx.l.google.com","priority":1}],"NS":["a1-198.akam.net","a12-67.akam.net","a13-64.akam.net","a14-65.akam.net","a18-66.akam.net","a9-67.akam.net","ns1.p201.dns.oraclecloud.net","ns2.p201.dns.oraclecloud.net","ns3.p201.dns.oraclecloud.net","ns4.p201.dns.oraclecloud.net"],"SOA":{"mname":"ns1.p201.dns.oraclecloud.net","retry":600,"rname":"hostmaster.dmm.com","expire":604800,"serial":2019078167,"minimum":1800,"refresh":3600},"TXT":["ZOOM_verify_mJHwhUY4QF-U-NB-ikSc5A","_globalsign-domain-verification=4MUwz3NxyQcnphO6_X5Yqpm6jBZY8hyXdVGokb2e6h","_globalsign-domain-verification=SulehIMiyKh4Ss26vaXAzW-39ZDUig-6TCS8iAzIyK","_globalsign-domain-verification=TxCH5zDhxQVjx0lcDjq1WOGSB7p2uWhl7kVd-iZqVs","_globalsign-domain-verification=pGu2ryWAxcIl_H6w-3_HDoTQNoBFy4-2Uncdms-9Eq","_globalsign-domain-verification=vpKvKfRjpoIXiHja7fkpgnA-wlSVx3mwgGOS6ZC_cy","amazonses:7xV/3qQeRikPxbKloMh2hRa3uWq+MyESTjdJ6DRlK6o=","apple-domain-verification=JzESpLTWhOoQjqoS","atlassian-domain-verification=d6HZ/IOb1pozzpcOyoOf32CCayQFZkxkAltwl5ukawqBQwQ1trIG5kIlQhgg894M","facebook-domain-verification=0ych9cqn7we1lwdqektbo0n4aqxqot","facebook-domain-verification=m7np1o8hf5gdfxa3o1ruw7eeud7rzf","google-site-verification=1fwBYQ_8LTftf3tiJTMz_pdEtl_bZG-Pz9LPa0qZvro","google-site-verification=2Xwutjakkm-_2w-_Tta4St4-MbvojQLaqKYuOiqeaN4","google-site-verification=NXDlg2Tf4_6_G3RThxQup-jt0-y0Jlx27TY1qjjopwk","google-site-verification=UQBWBWOATeAEa2vr5GEytHpNQ4findwtEv84kPm3q7Q","google-site-verification=cgYiis9ZD2SE9rhjUe4Ilbd_UOkzR_Fw4rVAqoydrkw","google-site-verification=hpaRS16ikkHRBRRv01Z5RhlwGSel0SZYVN6J3WvCW1Q","google-site-verification=iRjnQq5pXckFHyLwZZSHEuZYhycubSaNt9fhx3Re_bI","google-site-verification=t3iimK5QqyP35ZUBBRXn9dzOom0JoTlPCXbAuSoUvH0","google-site-verification=uU8ZqUH0Zgc2xwP4NO76QW7r741yEk8_RIariQgkLmY","sending_domain1027913=3ed3923536b779d85064b5914e56b577e6a8806a8e72e7c706c0c9303e62e894","v=spf1 include:_spf1.dmm.com include:u6720083.wl084.sendgrid.net include:_spf.google.com include:spf.maildealer.jp include:mktomail.com -all","vmware-cloud-verification-d9575fd8-804a-4fe5-b7e1-00c41cea759a"]}0.0000059664617,719,6282025-06-17RDAP1995-06-282028-06-272025-06-171API GmbH{"raw_response":{"links":[{"rel":"self","href":"https://rdap.verisign.com/com/v1/domain/DMM.COM","type":"application/rdap+json","value":"https://rdap.verisign.com/com/v1/domain/DMM.COM"},{"rel":"related","href":"https://rdap.1api.net/domain/DMM.COM","type":"application/rdap+json","value":"https://rdap.1api.net/domain/DMM.COM"}],"events":[{"eventDate":"1995-06-28T04:00:00Z","eventAction":"registration"},{"eventDate":"2028-06-27T04:00:00Z","eventAction":"expiration"},{"eventDate":"2024-11-27T05:41:44Z","eventAction":"last changed"},{"eventDate":"2025-06-17T05:22:11Z","eventAction":"last update of RDAP database"}],"handle":"29322_DOMAIN_COM-VRSN","status":["client transfer prohibited"],"ldhName":"DMM.COM","notices":[{"links":[{"href":"https://www.verisign.com/domain-names/registration-data-access-protocol/terms-service/index.xhtml","type":"text/html"}],"title":"Terms of Use","description":["Service subject to Terms of Use."]},{"links":[{"href":"https://icann.org/epp","type":"text/html"}],"title":"Status Codes","description":["For more information on domain status codes, please visit https://icann.org/epp"]},{"links":[{"href":"https://icann.org/wicf","type":"text/html"}],"title":"RDDS Inaccuracy Complaint Form","description":["URL of the ICANN RDDS Inaccuracy Complaint Form: https://icann.org/wicf"]}],"entities":[{"roles":["registrar"],"handle":"1387","entities":[{"roles":["abuse"],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text",""],["tel",{"type":"voice"},"uri","tel:+49.68949396850"],["email",{},"text","abuse@1api.net"]]],"objectClassName":"entity"}],"publicIds":[{"type":"IANA Registrar ID","identifier":"1387"}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","1API GmbH"]]],"objectClassName":"entity"}],"secureDNS":{"delegationSigned":false},"nameservers":[{"ldhName":"A1-198.AKAM.NET","objectClassName":"nameserver"},{"ldhName":"A12-67.AKAM.NET","objectClassName":"nameserver"},{"ldhName":"A13-64.AKAM.NET","objectClassName":"nameserver"},{"ldhName":"A14-65.AKAM.NET","objectClassName":"nameserver"},{"ldhName":"A18-66.AKAM.NET","objectClassName":"nameserver"},{"ldhName":"A9-67.AKAM.NET","objectClassName":"nameserver"},{"ldhName":"NS1.P201.DNS.ORACLECLOUD.NET","objectClassName":"nameserver"},{"ldhName":"NS2.P201.DNS.ORACLECLOUD.NET","objectClassName":"nameserver"},{"ldhName":"NS3.P201.DNS.ORACLECLOUD.NET","objectClassName":"nameserver"},{"ldhName":"NS4.P201.DNS.ORACLECLOUD.NET","objectClassName":"nameserver"}],"objectClassName":"domain","rdapConformance":["rdap_level_0","icann_rdap_technical_implementation_guide_0","icann_rdap_response_profile_0"]}}Domain is active
nfb.cacacaICANNHTTP 20035.182.164.155CA{"tiktok":["https://tiktok.com/@nfb_onf"],"youtube":["http://youtube.com/nfb"],"facebook":["http://facebook.com/nfb.ca"],"linkedin":["https://linkedin.com/company/national-film-board-of-canada"],"instagram":["https://instagram.com/onf_nfb"],"x-twitter":["http://twitter.com/thenfb"]}2026-07-02PWA, RSS, Python, Mailgun, Uvicorn, Google Ads, Open Graph, Reddit Ads, Microsoft 365, Facebook Pixel2026-07-17TRUE{"A":["35.182.164.155"],"DS":[{"digest":"323a5dd224634e5d4315f10b783bd9383d1f344c70cff7b398689b49e923baad","key_tag":26784,"algorithm":13,"digest_type":2},{"digest":"10e490f8c87fc9df75035046716e077965518265f140bdc2811312044fd4b269","key_tag":46290,"algorithm":7,"digest_type":2},{"digest":"2e627ddb59da5200da77d5d047055ec13dcf9db8","key_tag":46290,"algorithm":7,"digest_type":1}],"MX":[{"host":"nfb-ca.mail.protection.outlook.com","priority":10}],"NS":["NS3.nfb.ca","NS4.nfb.ca","NS5.nfb.ca"],"SOA":{"mname":"NS4.nfb.ca","retry":3600,"rname":"POSTMASTER.nfb.ca","expire":1209600,"serial":2026053262,"minimum":3600,"refresh":14400},"TXT":["APPLE-DOMAIN-VERIFICATION=6V6TVV5SKLHDZMHJ","BCN=2EDCD5F2-0772-11ED-AAF1-F43480AAB901","FACEBOOK-DOMAIN-VERIFICATION=GFJ76JWTHRQLR7GPDEPMUZHYU0H7K3","FACEBOOK-DOMAIN-VERIFICATION=NKMXB7P4KG4063U0JA3X7JHSGRH50Y","GOOGLE-SITE-VERIFICATION=J6EGV_IDVIDFHNUSRMVT6OH9D74NY8OCEFEW3SV2H7O","HAVE-I-BEEN-PWNED-VERIFICATION=A4E45C8AB915F31ED743BC9FE0ECEC6C","MS=MS26537848","MS=MS27308068","adobe-idp-site-verification=e4e5afcb1d9f55e0154efc626d8606ca67791a17c6ba4fc42d4a1053cd387efc","anthropic-domain-verification-ftk5sn=GQuoX0uA8WNx9EV8Czgmwcp9g","atlassian-domain-verification=qjCKPqaPcgAv91OvNF3rQNf754lBtLvtDG3pJcafojvX/NtuyoiVyEdAuCUFHvJe","miro-verification=cd2d7bdad6396f5761923f2962f1c1f40a5a3e16","smartsheet-site-validation=mOgjT9a23aSCeQ48JVW5wOE3xnkuUEUs","teamviewer-sso-verification=47ca5c782cc846f9bacb9a92fce00bb4","v=spf1 a ip4:52.20.37.54 ip4:199.84.162.0/24 include:carmamail.com include:spf.protection.outlook.com include:emrs._spf.ssc-spc.gc.ca a:nfb.managed-otrs.com include:mailgun.org ~all"],"DNSKEY":[{"flags":256,"protocol":3,"algorithm":13,"public_key":"fFACaontZ6ceum5pdrs6my+T7yIyXWdMEn+sTKevrDkprI8FdmorfsDwWB1khWj/STEBI4ZJacaYkptUnikQcg=="},{"flags":257,"protocol":3,"algorithm":13,"public_key":"Aa0z4FcCgmKsJ+BfeCb6qy1IJwrH1V5pKlJd0z5qjV6cB5zkngQVau115l/MHwdROlAAj2xzlIJ7THSFO82MsA=="},{"flags":256,"protocol":3,"algorithm":7,"public_key":"AwEAAcBCQ97W/JWQUNtFIQ0/PNNJxxvBi1CDKoPaA9A+U4UP1zD1p8QwlfQIEoyjn+aIIVASpH3byKfiqagsm25E+4f+4fIMO2cug4WLAWoeFtqrOgLq1gn6yp4fxeuYuKWRaU/E7v1EGttV/tCgReRAE5IrevcRmg2Nyk5MwlSqZ8rsDD8/gyNFNytkjZNrD4GpluHB1RKzLGn8muYSUxgluyWDSV0IkFI7IJOV4Aq8tip1bamkUgujSHL/ixMD872YcQ3e8FJ3v3q602ZNu8ae3QLNYM3YL/PAsj68WcmyC1lXdJalk40fjzsZ7PnAPXsWoaSqD9pQhRqRJZErO7vKKpU="},{"flags":257,"protocol":3,"algorithm":7,"public_key":"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"}]}0.0000011451717,510,2762026-02-11RDAP2000-11-062031-08-252026-02-11A.R.C. Informatique Inc.{"raw_response":{"links":[{"rel":"self","href":"https://rdap.ca.fury.ca/rdap/domain/nfb.ca","type":"application/rdap+json","title":"Authoritative URL for this resource","value":"https://rdap.ca.fury.ca/rdap/domain/nfb.ca"}],"events":[{"eventDate":"2000-11-06T14:50:00Z","eventAction":"registration"},{"eventDate":"2031-08-25T04:00:00Z","eventAction":"expiration"},{"eventDate":"2025-03-31T14:32:25Z","eventAction":"last changed"},{"eventDate":"2026-02-11T16:57:08Z","eventAction":"last update of RDAP database"}],"handle":"D20529-CIRA","port43":"whois.ca.fury.ca","status":["client transfer prohibited"],"ldhName":"nfb.ca","notices":[{"links":[{"rel":"glossary","href":"https://icann.org/epp","type":"text/html","value":"https://rdap.ca.fury.ca/rdap/domain/nfb.ca"}],"title":"Status Codes","description":["For more information on domain status codes, please visit https://icann.org/epp"]},{"links":[{"rel":"terms-of-service","href":"https://www.cira.ca/en/resources/documents/about/website-terms-use","type":"text/html","value":"https://rdap.ca.fury.ca/rdap/domain/nfb.ca"}],"title":"Terms of Service","description":["Service subject to Terms of Use."]},{"links":[{"rel":"help","href":"https://icann.org/wicf","type":"text/html","value":"https://rdap.ca.fury.ca/rdap/domain/nfb.ca"}],"title":"RDDS Inaccuracy Complaint Form","description":["URL of the ICANN RDDS Inaccuracy Complaint Form: https://icann.org/wicf"]},{"links":[{"rel":"help","href":"https://www.cira.ca/en/resources/documents/about/website-terms-use","type":"text/html","value":"https://rdap.ca.fury.ca/rdap/domain/nfb.ca"}],"title":"Legal Notice","description":["\nUse of CIRA's WHOIS service is governed by the Terms of Use in its Legal\nNotice, available at https://www.cira.ca/en/resources/documents/about/website-terms-use\n\n(c) 2026 Canadian Internet Registration Authority, (http://www.cira.ca/)"]}],"entities":[{"roles":["registrar"],"handle":"not applicable","entities":[{"roles":["abuse"],"handle":"not applicable","vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","Abuse Contact"],["kind",{},"text","individual"],["role",{},"text","abuse"],["adr",{},"text",["","","","","","",""]],["tel",{"type":["voice"]},"uri","tel:+1.4185459224"],["email",{},"text","mona@arcinfo.qc.ca"],["url",{"type":"home"},"uri","www.webdomaine.ca"]]],"objectClassName":"entity"}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","A.R.C. Informatique Inc."],["kind",{},"text","org"],["role",{},"text","registrar"],["adr",{},"text",["","","","","","",""]],["url",{"type":"home"},"uri","www.webdomaine.ca"]]],"objectClassName":"entity"},{"roles":["registrant"],"handle":"R27314-CIRA","vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","National Film Board of Canada / Office national du film du Canada"],["kind",{},"text","individual"],["org",{},"text","National Film Board of Canada / Office national du film du Canada"],["role",{},"text","registrant"],["adr",{"cc":"CA"},"text",["","","1501 rue de Bleury","Montreal","QC","H3A0H3",""]],["tel",{"type":["voice"]},"uri","tel:+1.5148206850"],["email",{},"text","b.gervasi@nfb.ca"],["url",{"type":"home"},"uri","www.webdomaine.ca"]]],"objectClassName":"entity"},{"roles":["administrative"],"handle":"C926675-CIRA","vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","Mr Bruno Gervasi"],["kind",{},"text","individual"],["org",{},"text","National Film Board of Canada"],["role",{},"text","administrative"],["adr",{"cc":"CA"},"text",["","","1501 rue de Bleury","Montreal","QC","H3A0H3",""]],["tel",{"type":["voice"]},"uri","tel:+1.5148206850"],["email",{},"text","dnsmaster@nfb.ca"],["url",{"type":"home"},"uri","www.webdomaine.ca"]]],"objectClassName":"entity"},{"roles":["technical"],"handle":"81474433-CIRA","vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","Marco Girouard"],["kind",{},"text","individual"],["org",{},"text","National Film Board of Canada"],["role",{},"text","technical"],["adr",{"cc":"CA"},"text",["","","1501 rue De Bleury","Montreal","QC","H3A0H3",""]],["tel",{"type":["voice"]},"uri","tel:+1.5149924020"],["email",{},"text","m.girouard@nfb.ca"],["url",{"type":"home"},"uri","www.webdomaine.ca"]]],"objectClassName":"entity"},{"roles":["billing"],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text",""],["kind",{},"text","individual"],["org",{},"text",""],["role",{},"text","billing"],["adr",{},"text",["","","","","","",""]],["tel",{"type":["voice"]},"text",""],["tel",{"type":["fax"]},"text",""],["email",{},"text",""],["url",{"type":"home"},"uri","www.webdomaine.ca"]]],"objectClassName":"entity"}],"secureDNS":{"dsData":[{"digest":"2E627DDB59DA5200DA77D5D047055EC13DCF9DB8","events":[{"eventDate":"2020-04-21T19:16:50Z","eventAction":"registration"}],"keyTag":46290,"algorithm":7,"digestType":1},{"digest":"10E490F8C87FC9DF75035046716E077965518265F140BDC2811312044FD4B269","events":[{"eventDate":"2020-04-21T19:16:50Z","eventAction":"registration"}],"keyTag":46290,"algorithm":7,"digestType":2}],"delegationSigned":true},"nameservers":[{"ldhName":"ns3.nfb.ca","objectClassName":"nameserver"},{"ldhName":"ns4.nfb.ca","objectClassName":"nameserver"},{"ldhName":"ns5.nfb.ca","objectClassName":"nameserver"}],"unicodeName":"nfb.ca","objectClassName":"domain","rdapConformance":["icann_rdap_response_profile_1","icann_rdap_technical_implementation_guide_1","rdap_level_0"]}}Domain is active
polarsteps.comcomcomICANNHTTP 20052.16.161.12IE{"reddit":["https://reddit.com/r/Polarsteps"],"tiktok":["https://tiktok.com/@polarsteps"],"instagram":["https://instagram.com/polarsteps"]}2026-07-04HSTS, React, HTTP/2, Python, Uvicorn, Zendesk, Mixpanel, Atlassian, CookieYes, Detectify2026-07-28TRUE{"A":["52.16.161.12","52.48.123.253"],"MX":[{"host":"alt1.aspmx.l.google.com","priority":5},{"host":"alt2.aspmx.l.google.com","priority":5},{"host":"alt3.aspmx.l.google.com","priority":10},{"host":"alt4.aspmx.l.google.com","priority":10},{"host":"aspmx.l.google.com","priority":1}],"NS":["ns-1263.awsdns-29.org","ns-1703.awsdns-20.co.uk","ns-442.awsdns-55.com","ns-553.awsdns-05.net"],"SOA":{"mname":"ns-553.awsdns-05.net","retry":900,"rname":"awsdns-hostmaster.amazon.com","expire":1209600,"serial":1,"minimum":86400,"refresh":7200},"TXT":["MS=ms60868660","apple-domain-verification=7MIUgeNFXkALldbN","atlassian-domain-verification=uIMHercaWE0SW3qfUOyMloN47CTNvZgHHaMQfIcSsRxa46Sk11yJOlyIUFb2pXhf","detectify-verification=6d51c3a99ff63f3c2b9774a99b9bbafb","facebook-domain-verification=jcxyymroi9bwrqgxu5bw2fp9cossot","google-site-verification=172dlo3lLvkvzMBb5hgewhtJVy21A3v_IP_qXON9l4E","google-site-verification=2gfO4l3ziXeb38dj-HPIrh5Ihapk51U-4YM8FTms2Kg","google-site-verification=JOPLLBIHtsK_8qPSkUzpSDUBLvzQCBBwDYWKJnSnH9w","google-site-verification=vYkZF-iRWxuIN_3_SKvney4B7zGeVaUhvI_lohRINkE","google-site-verification=vm1VDEBg3savwlVh3jKEhH2ehwPK3ww2bYbA2xLQNJk","google-site-verification=ydOg1Ncc1TlLVrLVwRGyp_YSeUCrIIUlrnfuMiUGs8Y","mixpanel-domain-verify=78a1ae65-6593-4db9-b3be-fd0e80f02042","new-relic-domain-verification=073a736ed134408889964777e84d4d60","tiktok-developers-site-verification=DlHgoE4Zur7W6nbeOckn7gLoa79AULr9","v=spf1 a include:_spf.google.com include:helpscoutemail.com include:_spf.airship.co.uk include:mail.zendesk.com ~all"]}0.00000066202317,638,6402026-05-26RDAP2010-06-042027-06-042026-05-05NameCheap, Inc.{"raw_response":{"links":[{"rel":"self","href":"https://rdap.verisign.com/com/v1/domain/POLARSTEPS.COM","type":"application/rdap+json","value":"https://rdap.verisign.com/com/v1/domain/POLARSTEPS.COM"},{"rel":"related","href":"https://rdap.namecheap.com/domain/POLARSTEPS.COM","type":"application/rdap+json","value":"https://rdap.namecheap.com/domain/POLARSTEPS.COM"}],"events":[{"eventDate":"2010-06-04T12:56:11Z","eventAction":"registration"},{"eventDate":"2027-06-04T12:56:11Z","eventAction":"expiration"},{"eventDate":"2026-05-05T10:19:07Z","eventAction":"last changed"},{"eventDate":"2026-05-25T23:25:51Z","eventAction":"last update of RDAP database"}],"handle":"1600564185_DOMAIN_COM-VRSN","status":["client transfer prohibited"],"ldhName":"POLARSTEPS.COM","notices":[{"links":[{"rel":"terms-of-service","href":"https://www.verisign.com/domain-names/registration-data-access-protocol/terms-service/index.xhtml","type":"text/html","value":"https://rdap.verisign.com/com/v1/domain/polarsteps.com"}],"title":"Terms of Service","description":["Service subject to Terms of Use."]},{"links":[{"href":"https://icann.org/epp","type":"text/html"}],"title":"Status Codes","description":["For more information on domain status codes, please visit https://icann.org/epp"]},{"links":[{"rel":"help","href":"https://icann.org/wicf","type":"text/html","value":"https://rdap.verisign.com/com/v1/domain/polarsteps.com"}],"title":"RDDS Inaccuracy Complaint Form","description":["URL of the ICANN RDDS Inaccuracy Complaint Form: https://icann.org/wicf"]}],"entities":[{"links":[{"rel":"about","href":"http://www.namecheap.com","type":"text/html","value":"https://rdap.namecheap.com/"}],"roles":["registrar"],"handle":"1068","entities":[{"roles":["abuse"],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text",""],["tel",{"type":"voice"},"uri","tel:+1.6613102107"],["email",{},"text","abuse@namecheap.com"]]],"objectClassName":"entity"}],"publicIds":[{"type":"IANA Registrar ID","identifier":"1068"}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","NameCheap, Inc."]]],"objectClassName":"entity"}],"secureDNS":{"delegationSigned":false},"nameservers":[{"ldhName":"NS-1263.AWSDNS-29.ORG","objectClassName":"nameserver"},{"ldhName":"NS-1703.AWSDNS-20.CO.UK","objectClassName":"nameserver"},{"ldhName":"NS-442.AWSDNS-55.COM","objectClassName":"nameserver"},{"ldhName":"NS-553.AWSDNS-05.NET","objectClassName":"nameserver"}],"objectClassName":"domain","rdapConformance":["rdap_level_0","icann_rdap_technical_implementation_guide_1","icann_rdap_response_profile_1"]}}Domain is active
onf.cacacaICANNHTTP 20035.182.164.155CA{"tiktok":["https://tiktok.com/@nfb_onf"],"youtube":["https://youtube.com/onf"],"facebook":["https://facebook.com/onf.ca"],"linkedin":["https://linkedin.com/company/national-film-board-of-canada"],"instagram":["https://instagram.com/onf_nfb"],"x-twitter":["https://twitter.com/onf"]}2026-07-03PWA, RSS, Miro, Python, Mailgun, Uvicorn, Google Ads, Open Graph, Reddit Ads, Microsoft 3652026-07-26TRUE{"A":["35.182.164.155"],"DS":[{"digest":"22abf039157305c388c84477984a6639d98e2be7c6a0874c34d69c881c966315","key_tag":21878,"algorithm":13,"digest_type":2},{"digest":"00a281cf34bdf3bece02a372aed31f70289cb82d4609d149be960a4b88e6d62c","key_tag":20763,"algorithm":7,"digest_type":2},{"digest":"5b145bfeba22ea308dc5d9ad3c18b4f7323176cb","key_tag":20763,"algorithm":7,"digest_type":1}],"MX":[{"host":"onf-ca.mail.protection.outlook.com","priority":10}],"NS":["NS3.NFB.ca","NS4.NFB.ca","NS5.NFB.ca"],"SOA":{"mname":"NS4.NFB.ca","retry":3600,"rname":"POSTMASTER.NFB.ca","expire":1209600,"serial":2026053714,"minimum":3600,"refresh":14400},"TXT":["MS=ms26537848","MS=ms27308068","apple-domain-verification=6v6TvV5SKLHdZmHJ","bcn=59BF248C-0772-11ED-9D0B-55E614E0321E","facebook-domain-verification=gfj76jwthrqlr7gpdepmuzhyu0h7k3","facebook-domain-verification=nkmxb7p4kg4063u0ja3x7jhsgrh50y","google-site-verification=LgfyTfnGtVWLZsNyGZ0NqV2lf3srxsQUc72XHDeOFOc","have-i-been-pwned-verification=a4e45c8ab915f31ed743bc9fe0ecec6c","miro-verification=cd2d7bdad6396f5761923f2962f1c1f40a5a3e16","smartsheet-site-validation=fJyFysgBZx3u6HRND3ctFyFSK1wU7toM","v=spf1 a ip4:52.20.37.54 ip4:199.84.162.0/24 include:carmamail.com include:spf.protection.outlook.com include:emrs._spf.ssc-spc.gc.ca a:nfb.managed-otrs.com include:mailgun.org ~all"],"DNSKEY":[{"flags":256,"protocol":3,"algorithm":13,"public_key":"McOn0APKyxz7MX0bLgGQ/qkENlCA4xhIJDhBN3g9PuzZ9hJlsBcQd7CzpW3rebPvWwCGtxxiyoxTjaAjxJYLDA=="},{"flags":257,"protocol":3,"algorithm":13,"public_key":"bhkWkEeovTEBfWYzugVeTWrIVNrHZa8sVokVbMHFPKkoOkXlc4B2Bre9IYWU9f8xxosyUqR5E4bKpUZavpNhxQ=="},{"flags":256,"protocol":3,"algorithm":7,"public_key":"AwEAAaLIQ3mCz6B+Lk3CJGhDOdwB+LI3Ih25ZUsxEGUjcQJBwRq9LdiwG2TairnL+yPLXET0uDkNeuEzMq54eGYOzJmhDBBfUiT1GT71S2/LwEjBMiZxqykjZCznPeRDGU39ZyMBAvvaWpMXLvTal5mPFO/20ZcxBYVa5DENkt4B7fvGTmGm48UTE0QRzGrQVJh0ZEpCJHsydpRAgC3D/OeEhGe5BiQTco91hVPOFF7duHk7ujH2E6T/YjIBtOf1s3OoCsAUnD1nTR2YBMtm2GeKVxyh7X/Bs6XBio1NWVpWKGL4Tb6Y2OAS2IecbbVddpFYKPK4/VpL2i+XNfogve0KLI0="},{"flags":257,"protocol":3,"algorithm":7,"public_key":"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"}]}0.00000054890517,295,1782025-06-24RDAP2000-11-062031-08-252025-06-24A.R.C. Informatique Inc.{"raw_response":{"links":[{"rel":"self","href":"https://rdap.ca.fury.ca/rdap/domain/onf.ca","type":"application/rdap+json","title":"Authoritative URL for this resource"}],"events":[{"eventDate":"2000-11-06T16:58:34Z","eventAction":"registration"},{"eventDate":"2031-08-25T04:00:00Z","eventAction":"expiration"},{"eventDate":"2025-03-31T14:27:54Z","eventAction":"last changed"},{"eventDate":"2025-06-24T21:03:56Z","eventAction":"last update of RDAP database"}],"handle":"D20759-CIRA","port43":"whois.ca.fury.ca","status":["active"],"ldhName":"onf.ca","notices":[{"links":[{"rel":"related","href":"https://icann.org/epp","type":"text/html"}],"title":"Status Codes","description":["For more information on domain status codes, please visit https://icann.org/epp"]},{"links":[{"rel":"related","href":"https://cira.ca/legal-policy-compliance/website-terms-use","type":"text/html"}],"title":"Terms of Service","description":["Service subject to Terms of Use."]},{"links":[{"rel":"related","href":"https://icann.org/wicf","type":"text/html"}],"title":"RDDS Inaccuracy Complaint Form","description":["URL of the ICANN RDDS Inaccuracy Complaint Form: https://icann.org/wicf"]},{"links":[{"rel":"related","href":"http://www.cira.ca/legal-notice","type":"text/html"}],"title":"Legal Notice","description":["\nUse of CIRA's WHOIS service is governed by the Terms of Use in its Legal\nNotice, available at http://www.cira.ca/legal-notice/?lang=en\n\n(c) 2025 Canadian Internet Registration Authority, (http://www.cira.ca/)"]}],"entities":[{"roles":["registrar"],"handle":"not applicable","entities":[{"roles":["abuse"],"handle":"not applicable","publicIds":[],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","Abuse Contact"],["kind",{},"text","individual"],["role",{},"text","abuse"],["adr",{},"text",["","","","","","",""]],["tel",{"type":["voice"]},"uri","tel:+1.4185459224"],["email",{},"text","mona@arcinfo.qc.ca"],["url",{"type":"home"},"uri","www.webdomaine.ca"]]],"objectClassName":"entity"}],"publicIds":[],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","A.R.C. Informatique Inc."],["kind",{},"text","org"],["role",{},"text","registrar"],["adr",{},"text",["","","","","","",""]],["url",{"type":"home"},"uri","www.webdomaine.ca"]]],"objectClassName":"entity"},{"roles":["registrant"],"handle":"R27314-CIRA","publicIds":[{"type":"ROID","identifier":"R27314-CIRA"}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","National Film Board of Canada / Office national du film du Canada"],["kind",{},"text","individual"],["org",{},"text","National Film Board of Canada / Office national du film du Canada"],["role",{},"text","registrant"],["adr",{},"text",["","","1501 rue de Bleury","Montreal","QC","H3A0H3","CA"]],["tel",{"type":["voice"]},"uri","tel:+1.5148206850"],["email",{},"text","b.gervasi@nfb.ca"],["url",{"type":"home"},"uri","www.webdomaine.ca"]]],"objectClassName":"entity"},{"roles":["administrative"],"handle":"C926675-CIRA","publicIds":[{"type":"ROID","identifier":"C926675-CIRA"}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","Mr Bruno Gervasi"],["kind",{},"text","individual"],["org",{},"text","National Film Board of Canada"],["role",{},"text","administrative"],["adr",{},"text",["","","1501 rue de Bleury","Montreal","QC","H3A0H3","CA"]],["tel",{"type":["voice"]},"uri","tel:+1.5148206850"],["email",{},"text","dnsmaster@nfb.ca"],["url",{"type":"home"},"uri","www.webdomaine.ca"]]],"objectClassName":"entity"},{"roles":["technical"],"handle":"81474433-CIRA","publicIds":[{"type":"ROID","identifier":"81474433-CIRA"}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","Marco Girouard"],["kind",{},"text","individual"],["org",{},"text","National Film Board of Canada"],["role",{},"text","technical"],["adr",{},"text",["","","1501 rue De Bleury","Montreal","QC","H3A0H3","CA"]],["tel",{"type":["voice"]},"uri","tel:+1.5149924020"],["email",{},"text","m.girouard@nfb.ca"],["url",{"type":"home"},"uri","www.webdomaine.ca"]]],"objectClassName":"entity"},{"roles":["billing"],"publicIds":[],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text",""],["kind",{},"text","individual"],["org",{},"text",""],["role",{},"text","billing"],["adr",{},"text",["","","","","","",""]],["email",{},"text",""],["url",{"type":"home"},"uri","www.webdomaine.ca"]]],"objectClassName":"entity"}],"secureDNS":{"dsData":[{"digest":"00A281CF34BDF3BECE02A372AED31F70289CB82D4609D149BE960A4B88E6D62C","events":[{"eventDate":"2020-04-21T19:20:39Z","eventAction":"registration"}],"keyTag":20763,"algorithm":7,"digestType":2},{"digest":"5B145BFEBA22EA308DC5D9AD3C18B4F7323176CB","events":[{"eventDate":"2020-04-21T19:20:39Z","eventAction":"registration"}],"keyTag":20763,"algorithm":7,"digestType":1}],"delegationSigned":true},"nameservers":[{"ldhName":"ns3.nfb.ca","objectClassName":"nameserver"},{"ldhName":"ns4.nfb.ca","objectClassName":"nameserver"},{"ldhName":"ns5.nfb.ca","objectClassName":"nameserver"}],"unicodeName":"onf.ca","objectClassName":"domain","rdapConformance":["icann_rdap_response_profile_1","icann_rdap_technical_implementation_guide_1","rdap_level_0"]}}Domain is active
pomodoro-tracker.comcomcomICANNHTTP 200178.212.13.133RU{"github":["https://github.com/klen/pomodoro-tracker-locales"]}2026-07-04PWA, HSTS, HTTP/2, Python, Uvicorn, Cloudflare, Open Graph, Google AdSense, Google Site Verification, Cloudflare Browser Insights2026-07-17TRUE{"A":["178.212.13.133"],"MX":[{"host":"mail.pomodoro-tracker.com","priority":1}],"NS":["ara.ns.cloudflare.com","jeremy.ns.cloudflare.com"],"SOA":{"mname":"ara.ns.cloudflare.com","retry":2400,"rname":"dns.cloudflare.com","expire":604800,"serial":2405900832,"minimum":1800,"refresh":10000},"TXT":["google-site-verification=2YeNA5PDLQq672WCdkEzIbomOT72ekNZ8-WGevuz2S8","v=spf1 ip4:178.212.13.133 ~all","yandex-verification: 4d89783dc8e84ce0"]}0.00000035041614,304,9242025-06-24RDAP2015-08-232028-08-232025-06-24Cloudflare, Inc.{"raw_response":{"links":[{"rel":"self","href":"https://rdap.verisign.com/com/v1/domain/POMODORO-TRACKER.COM","type":"application/rdap+json","value":"https://rdap.verisign.com/com/v1/domain/POMODORO-TRACKER.COM"},{"rel":"related","href":"https://rdap.cloudflare.com/rdap/v1/domain/POMODORO-TRACKER.COM","type":"application/rdap+json","value":"https://rdap.cloudflare.com/rdap/v1/domain/POMODORO-TRACKER.COM"}],"events":[{"eventDate":"2015-08-23T09:07:55Z","eventAction":"registration"},{"eventDate":"2028-08-23T09:07:55Z","eventAction":"expiration"},{"eventDate":"2023-08-24T04:10:08Z","eventAction":"last changed"},{"eventDate":"2025-06-24T04:41:14Z","eventAction":"last update of RDAP database"}],"handle":"1954754951_DOMAIN_COM-VRSN","status":["client transfer prohibited"],"ldhName":"POMODORO-TRACKER.COM","notices":[{"links":[{"href":"https://www.verisign.com/domain-names/registration-data-access-protocol/terms-service/index.xhtml","type":"text/html"}],"title":"Terms of Use","description":["Service subject to Terms of Use."]},{"links":[{"href":"https://icann.org/epp","type":"text/html"}],"title":"Status Codes","description":["For more information on domain status codes, please visit https://icann.org/epp"]},{"links":[{"href":"https://icann.org/wicf","type":"text/html"}],"title":"RDDS Inaccuracy Complaint Form","description":["URL of the ICANN RDDS Inaccuracy Complaint Form: https://icann.org/wicf"]}],"entities":[{"roles":["registrar"],"handle":"1910","entities":[{"roles":["abuse"],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text",""],["tel",{"type":"voice"},"uri","tel:+1.6503198930"],["email",{},"text","registrar-abuse@cloudflare.com"]]],"objectClassName":"entity"}],"publicIds":[{"type":"IANA Registrar ID","identifier":"1910"}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","Cloudflare, Inc."]]],"objectClassName":"entity"}],"secureDNS":{"delegationSigned":false},"nameservers":[{"ldhName":"ARA.NS.CLOUDFLARE.COM","objectClassName":"nameserver"},{"ldhName":"JEREMY.NS.CLOUDFLARE.COM","objectClassName":"nameserver"}],"objectClassName":"domain","rdapConformance":["rdap_level_0","icann_rdap_technical_implementation_guide_0","icann_rdap_response_profile_0"]}}Domain is active
Showing 5 of 17,152 rows · Technologies · Full website tech stack per site — CMS, payments, analytics, frameworks.

The Uvicorn dataset

Every site we've detected as running Uvicorn — with version, hosting, country, TLD and traffic rank.

Uvicorn lives inside 2 datasets

Uvicorn detection is part of Technologies (€159/mo) and All data (€599/mo). Buy either to filter the full 17,152-site list — or grab a free preview first.

Your Uvicorn downloads

The datasets you own, sliced to Uvicorn. Every button streams the latest daily export directly.

Format: JSONL (zstd) Dataset updated: 2026-07-28

API, columns & recipes → /account/api

Which websites are using Uvicorn?

webatla detects every site using Uvicorn and exports them as one downloadable list, so you can see who relies on this technology and what else runs alongside it.

Open the Uvicorn technology dataset to break adoption down by country and TLD, compare it with a competing technology, and track new domains over time.

Frequently asked questions

How many websites use Uvicorn?

webatla detects Uvicorn on 17K websites, refreshed daily — each with its domain, DNS, WHOIS, IP, country and ranking.

Can I download the list of websites using Uvicorn?

Yes, as structured JSONL. Grab a free sample first.

What's included for each site, and how fresh is it?

Domain, DNS, RDAP/WHOIS, the full technology stack, IP & country, PageRank and Harmonic — re-detected and re-exported daily.

How do I find the websites using Uvicorn?

Buy the technology dataset, then download the complete list of domains we detect using Uvicorn — re-exported every day.

What else is in the Uvicorn technology data?

Each row places Uvicorn next to the other technology on the same site, plus DNS, WHOIS, IP, country and ranking.

Can I download just the sites using Uvicorn, or the whole database?

Both. Every site running Uvicorn comes in the Technologies dataset, one downloadable file. Or buy All data for the entire database: technologies plus identity, ranking, DNS and RDAP/WHOIS for every domain, combined in one file. Daily fresh export.

How do I download the list of websites using Uvicorn?

Three steps: (1) grab the free 10,000-row sample to inspect the schema, (2) buy the Technologies dataset, (3) download the full list of every domain we detect running Uvicorn as a JSON Lines file. It is re-exported daily, so you can re-download the freshest list any time inside your access window. Each row carries the domain plus DNS, WHOIS, IP, hosting country and rank.

Get the full list of websites using Uvicorn

Pick the dataset that covers what you need. Each one includes Uvicorn and downloads as JSONL, rebuilt daily.

Want to compare every dataset side by side? Visit the pricing page