Websites using Twenty Twenty-One

Name: Websites that use Twenty Twenty-One
Creator: webatla
License: https://webatla.com/terms

About Twenty Twenty-One Database preview By country By TLD Download

About Twenty Twenty-One

webatla tracks 105,000 live websites using Twenty Twenty-One, 0.0% of every site we index. Download the full list of websites that use Twenty Twenty-One as a daily JSONL export. Every record includes the domain plus DNS, WHOIS, IP address, hosting country and global rank.

Twenty Twenty-One is a WordPress default theme released with WordPress 5.6 in December 2020. Designed by the WordPress.org theme team, it features a clean and accessible design with pastel color palettes and a strong focus on accessibility best practices and block editor compatibility.

The theme was created with a strong emphasis on color accessibility, offering low-contrast color schemes and meeting WCAG AA standards. It includes deep Gutenberg block editor integration and supports full customization through the WordPress Customizer. Twenty Twenty-One serves as both a functional default theme and a reference implementation for accessible WordPress design.

At a glance

VendorWordPress.org

Websitewordpress.org ↗

LanguagePHP

LicenseGPL v2

First release2020-12-08

All figures as of Aug 18, 2026

105,000 Sites detected

0.0% Of all websites

Database preview of Twenty Twenty-One sites

Twenty Twenty-One detection is a value inside the Technologies column. Two datasets carry it, switch between them to compare what's included.

webatla-technologies-twenty-twenty-one-2026-08-18.jsonl.zst · 105,000 rows · 14 columns Daily fresh export

Domain	TLD suffix	TLD	Domain type	HTTP status	IP address	Country by IP	Social networks	Technologies last data checked	Technologies	PR value	Harmonic value	Domain creation date	Domain expiration date
bcz.com	com	com	ICANN	HTTP 200	104.21.50.24	US	{"facebook":["https://facebook.com/bczcom"],"x-twitter":["https://twitter.com/bczdotcom"]}	2026-07-24	PHP, RSS, MySQL, HTTP/3, Favicon, WordPress, Cloudflare, Google Workspace, Twenty Twenty-One, Google Site Verification	0.00000045714	16,974,000	1998-07-24	2027-07-23
ufl.edu	edu	edu	ICANN	HTTP 200	128.227.36.35	US	{"youtube":["http://youtube.com/user/universityofflorida"],"facebook":["http://facebook.com/uflorida"],"linkedin":["https://linkedin.com/school/uflorida"],"instagram":["https://instagram.com/uflorida"],"x-twitter":["https://twitter.com/UF"]}	2026-07-09	PHP 7.4.33, RSS, Canva, MySQL, Slick, HTTP/2, jQuery, AddThis, Dropbox, Favicon	0.000014122	18,190,740	1986-03-25	2027-07-31
devcolor.org	org	org	ICANN	HTTP 200	23.185.0.2	US	{"facebook":["https://facebook.com/devcolor"],"linkedin":["https://linkedin.com/company/-dev-color"],"instagram":["https://instagram.com/devcolororg"],"x-twitter":["https://twitter.com/devcolororg"]}	2026-07-29	PHP, RSS, HSTS, MySQL, Nginx, Slick, Fastly, HTTP/2, jQuery, Favicon	0.00000513263	15,940,505	2015-05-07	2032-05-07
rumahweb.com	com	com	ICANN	HTTP 200	104.26.10.225	US	{"youtube":["https://youtube.com/rumahwebtv"],"facebook":["https://facebook.com/RumahwebIndonesia"],"linkedin":["https://linkedin.com/company/rumahweb"],"instagram":["https://instagram.com/rumahwebgram"],"x-twitter":["https://twitter.com/rumahwebtweet"]}	2026-08-16	PHP, RSS, HSTS, MySQL, HTTP/3, Favicon, Sendgrid, Elementor 3.10.1, WordPress, Amazon SES	0.00000231786	14,650,257	2002-02-19	2030-02-19
wisconsin.edu	edu	edu	ICANN	HTTP 200	128.104.80.36	US	{"youtube":["https://youtube.com/@UniversitiesWI"],"facebook":["https://facebook.com/universitiesofwisconsin"],"linkedin":["https://linkedin.com/company/universities-of-wisconsin"],"instagram":["https://instagram.com/universitieswi"],"x-twitter":["https://twitter.com/UniversitiesWI"]}	2026-07-17	Ada, PHP 8.3.31, RSS, MySQL, Plesk, jQuery, Favicon, core-js, WordPress 7.0, Google Ads	0.00000183658	17,388,402	1997-03-05	2027-07-31
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Domain	TLD suffix	TLD	Domain type	HTTP status	IP address	Country by IP	Social networks	Technologies last data checked	Technologies	DNS last data checked	DNS Status	DNS records	PR value	Harmonic value	RDAP/WHOIS last data checked	RDAP/WHOIS method	Domain creation date	Domain expiration date	Domain last changed	Registrar	RDAP/WHOIS Record	Response Status RDAP/WHOIS
bcz.com	com	com	ICANN	HTTP 200	104.21.50.24	US	{"facebook":["https://facebook.com/bczcom"],"x-twitter":["https://twitter.com/bczdotcom"]}	2026-07-24	PHP, RSS, MySQL, HTTP/3, Favicon, WordPress, Cloudflare, Google Workspace, Twenty Twenty-One, Google Site Verification	2026-08-10	TRUE	{"A":["104.21.50.24","172.67.199.183"],"DS":[{"digest":"4de6e520931306758804f71c5464f46165f655025b2924add1941d7c48ee698e","key_tag":2371,"algorithm":13,"digest_type":2}],"MX":[{"host":"alt1.aspmx.l.google.com","priority":5},{"host":"alt2.aspmx.l.google.com","priority":5},{"host":"aspmx.l.google.com","priority":1},{"host":"aspmx2.googlemail.com","priority":5},{"host":"aspmx3.googlemail.com","priority":5}],"NS":["merlin.ns.cloudflare.com","sue.ns.cloudflare.com"],"CAA":[{"tag":"issue","flags":0,"value":"comodoca.com"},{"tag":"issuewild","flags":0,"value":"comodoca.com"},{"tag":"issue","flags":0,"value":"digicert.com; cansignhttpexchanges=yes"},{"tag":"issuewild","flags":0,"value":"digicert.com; cansignhttpexchanges=yes"},{"tag":"issue","flags":0,"value":"letsencrypt.org"},{"tag":"issuewild","flags":0,"value":"letsencrypt.org"},{"tag":"issue","flags":0,"value":"pki.goog; cansignhttpexchanges=yes"},{"tag":"issuewild","flags":0,"value":"pki.goog; cansignhttpexchanges=yes"},{"tag":"issue","flags":0,"value":"ssl.com"},{"tag":"issuewild","flags":0,"value":"ssl.com"}],"SOA":{"mname":"merlin.ns.cloudflare.com","retry":2400,"rname":"dns.cloudflare.com","expire":604800,"serial":2411638095,"minimum":1800,"refresh":10000},"TXT":["google-site-verification=OboYBoH7qO2m1CgRo9osjs5dn0jdVNgVc9xVYwjCcm8","v=spf1 a mx a:bcz.com ip4:210.48.158.152 ip4:108.163.159.31 ?all"],"AAAA":["2606:4700:3036::ac43:c7b7","2606:4700:3037::6815:3218"],"HTTPS":[{"params":["alpn=h3,h2","ipv4hint=104.21.50.24,172.67.199.183","ech=AEX+DQBBdAAgACBWC2CHb5OuEHNJoaoB105kUseL7EWzQtPsB+MAPPVYBQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA=","ipv6hint=2606:4700:3036::ac43:c7b7,2606:4700:3037::6815:3218"],"target":"","priority":1}],"DNSKEY":[{"flags":256,"protocol":3,"algorithm":13,"public_key":"oJMRESz5E4gYzS/q6XDrvU1qMPYIjCWzJaOau8XNEZeqCYKD5ar0IRd8KqXXFJkqmVfRvMGPmM1x8fGAa2XhSA=="},{"flags":257,"protocol":3,"algorithm":13,"public_key":"mdsswUyr3DPW132mOi8V9xESWE8jTo0dxCjjnopKl+GqJxpVXckHAeF+KkxLbxILfDLUT0rAK9iUzy1L53eKGQ=="}]}	0.00000045714	16,974,000	2026-07-22	RDAP	1998-07-24	2027-07-23	2026-05-08	Cloudflare, Inc.	{"raw_response":{"links":[{"rel":"self","href":"https://rdap.verisign.com/com/v1/domain/BCZ.COM","type":"application/rdap+json","value":"https://rdap.verisign.com/com/v1/domain/BCZ.COM"},{"rel":"related","href":"https://rdap.cloudflare.com/rdap/v1/domain/BCZ.COM","type":"application/rdap+json","value":"https://rdap.cloudflare.com/rdap/v1/domain/BCZ.COM"}],"events":[{"eventDate":"1998-07-24T04:00:00Z","eventAction":"registration"},{"eventDate":"2027-07-23T04:00:00Z","eventAction":"expiration"},{"eventDate":"2026-05-08T12:32:43Z","eventAction":"last changed"},{"eventDate":"2026-07-22T09:07:08Z","eventAction":"last update of RDAP database"}],"handle":"2289449_DOMAIN_COM-VRSN","status":["client transfer prohibited"],"ldhName":"BCZ.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/bcz.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/bcz.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.cloudflare.com","type":"text/html","value":"https://rdap.cloudflare.com/rdap/v1/"}],"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":{"dsData":[{"digest":"4DE6E520931306758804F71C5464F46165F655025B2924ADD1941D7C48EE698E","keyTag":2371,"algorithm":13,"digestType":2}],"delegationSigned":true},"nameservers":[{"ldhName":"MERLIN.NS.CLOUDFLARE.COM","objectClassName":"nameserver"},{"ldhName":"SUE.NS.CLOUDFLARE.COM","objectClassName":"nameserver"}],"objectClassName":"domain","rdapConformance":["rdap_level_0","icann_rdap_technical_implementation_guide_1","icann_rdap_response_profile_1"]}}	Domain is active
ufl.edu	edu	edu	ICANN	HTTP 200	128.227.36.35	US	{"youtube":["http://youtube.com/user/universityofflorida"],"facebook":["http://facebook.com/uflorida"],"linkedin":["https://linkedin.com/school/uflorida"],"instagram":["https://instagram.com/uflorida"],"x-twitter":["https://twitter.com/UF"]}	2026-07-09	PHP 7.4.33, RSS, Canva, MySQL, Slick, HTTP/2, jQuery, AddThis, Dropbox, Favicon	2026-08-07	TRUE	{"A":["128.227.36.35"],"MX":[{"host":"ufl-edu.mail.protection.outlook.com","priority":5}],"NS":["ens.name.ufl.edu","rns.name.ufl.edu"],"PTR":["198.74.227.128.in-addr.arpa"],"SOA":{"mname":"ens1.name.ufl.edu","retry":200,"rname":"ufit-dns-notify.mail.ufl.edu","expire":2419200,"serial":330186390,"minimum":300,"refresh":86400},"TXT":["00D41000002ElGo=1TBVm00000000Cv","00DKb000000NtBp=1TBcx00000000T3","176D61B1DAA4CD3EFFEE8293D2546D9D","MS=ms94919362","adobe-idp-site-verification=7c8cd6e9c9b04eb60670818ca42e481ef6aa772e3c018fb8e9676f97bf5a96c3","airtable-verification=870ad782476d95a951486604523b909c","airtable-verification=a82914a4245481b0b3a7a97e4a705f9f","apple-domain-verification=cezqOSiI9SK9a4wl","apple-domain-verification=y9JdzsvfpOAMTGJk","autodesk-domain-verification=FSF_3IyYoDsnRCfQp8Vo","canva-site-verification=rqdZ_DiKQrp-Yu0_ubEY6g","cisco-ci-domain-verification=3f35d7a18857086c23bb36cdd19f3cd0cc81fdec4e9565954acd609f13078f29","contractworksverify=M4WEJZvXFi","docusign=0db0a018-ba63-4181-91d0-cd9c16f19353","dropbox-domain-verification=1rzguf6ktomp","e2ma-verification=4m3bb","google-site-verification=WfK3GDL7G43-eS-CZkpODatU5zNZ6bMGegsicpPy6jo","google-site-verification=nXH7dAjpfCeP_T76cRDlE8-YIZk0FnYnyNLbR_-kFnk","iContact180071","inLdNbkwVgpckGyQO5okUjF8D0uJZ3RAdXAJmuxIrII41wr60ds87xcnR1hL4gt60YCoqDHoQKAu7fdboahNVw==","jamf-site-verification=b5CMLqCFw1IrQyidGyv9Zw","lk2tiu4i03drmoomsncctp4om6","sending_domain1040741=8bf6473f43a280b921d387d953b46c40b1a5b21943f7cf17156d3ce1410ab874","sending_domain1069012=4f6b6aa09fc64566f0e8543c547d5eb4eb669afc5e1ac4a67fbcadcabcdf17a5","sending_domain134441=a48964708126d03db8f9f04ab520ac1c5316517fa7bea38b87d999475384eb7b","sending_domain307541=4424c706e483069c43c6b4d7013b71880610f4550a9125cef87ad1dda0a1a7a4","v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all","xxxk+e03DboyMHBP94u1+9I0M/OW2MhnhvY1mCH5qTZ4LwHFLoDZsYbKIFtXbzD8b30PNIg3l8CTFPD+pvttKQ=="]}	0.000014122	18,190,740	2025-07-13	WHOIS	1986-03-25	2027-07-31	2024-09-10	—	{"raw_response":"This Registry database contains ONLY .EDU domains.\nThe data in the EDUCAUSE Whois database is provided\nby EDUCAUSE for information purposes in order to\nassist in the process of obtaining information about\nor related to .edu domain registration records.\n\nThe EDUCAUSE Whois database is authoritative for the\n.EDU domain.\n\nA Web interface for the .EDU EDUCAUSE Whois Server is\navailable at: http://whois.educause.edu\n\nBy submitting a Whois query, you agree that this information\nwill not be used to allow, enable, or otherwise support\nthe transmission of unsolicited commercial advertising or\nsolicitations via e-mail. The use of electronic processes to\nharvest information from this server is generally prohibited\nexcept as reasonably necessary to register or modify .edu\ndomain names.\n\n-------------------------------------------------------------\n\nDomain Name: UFL.EDU\n\nRegistrant:\n\tUniversity of Florida\n\tNetwork Services\n\tSpace Sciences Research Building\n\tGainesville, FL 32611-2050\n\tUSA\n\nAdministrative Contact:\n\tBarry Kinter\n\tInfrastructure and Communication Technology (ICT)\n\tPO BOX 113370\n\tGainesville, FL 32611-2050\n\tUSA\n\t+1.3523922061\n\tdomain@net-services.ufl.edu\n\nTechnical Contact:\n\tJustin Taylor\n\tUniversity of Florida\n\tRm.112 SSRB\n\tGainesville, FL 32611-2050\n\tUSA\n\t+1.3522731347\n\tjustintaylor9@ufl.edu\n\nName Servers:\n\tRNS.NAME.UFL.EDU\n\tENS.NAME.UFL.EDU\n\nDomain record activated: 25-Mar-1986\nDomain record last updated: 10-Sep-2024\nDomain expires: 31-Jul-2027\n\r\n"}	Domain is active
devcolor.org	org	org	ICANN	HTTP 200	23.185.0.2	US	{"facebook":["https://facebook.com/devcolor"],"linkedin":["https://linkedin.com/company/-dev-color"],"instagram":["https://instagram.com/devcolororg"],"x-twitter":["https://twitter.com/devcolororg"]}	2026-07-29	PHP, RSS, HSTS, MySQL, Nginx, Slick, Fastly, HTTP/2, jQuery, Favicon	2026-08-16	TRUE	{"A":["23.185.0.2"],"MX":[{"host":"alt1.aspmx.l.google.com.devcolor.org","priority":5},{"host":"alt2.aspmx.l.google.com.devcolor.org","priority":5},{"host":"alt3.aspmx.l.google.com.devcolor.org","priority":10},{"host":"alt4.aspmx.l.google.com.devcolor.org","priority":10},{"host":"aspmx.l.google.com","priority":1}],"NS":["betty.ns.cloudflare.com","buck.ns.cloudflare.com"],"SOA":{"mname":"betty.ns.cloudflare.com","retry":2400,"rname":"dns.cloudflare.com","expire":604800,"serial":2411533811,"minimum":1800,"refresh":10000},"TXT":["00D0P000000Da7L=1TBUk00000000Xt","MS=ms90688665","google-site-verification=Oxf5OFXDD-n7JSKtkNIMudyExDVJ7EmHeNDMraO0ZIo","google-site-verification=sMlRKfsHJOJwEMmH0fdhDicI9LbhmfxojayRiX0GmIA","v=spf1 include:spf.hiringopps.net include:_spf.google.com include:servers.mcsv.net ~all"],"AAAA":["2620:12a:8000::2","2620:12a:8001::2"]}	0.00000513263	15,940,505	2025-08-05	RDAP	2015-05-07	2032-05-07	2025-08-05	Squarespace Domains II LLC	{"raw_response":{"links":[{"rel":"related","href":"https://rdap.squarespace.domains/domain/devcolor.org","type":"application/rdap+json","value":"https://rdap.squarespace.domains/domain/devcolor.org"},{"rel":"self","href":"https://rdap.publicinterestregistry.org/rdap/domain/devcolor.org","type":"application/rdap+json","value":"https://rdap.publicinterestregistry.org/rdap/domain/devcolor.org"}],"events":[{"eventDate":"2015-08-12T01:52:47.548Z","eventAction":"transfer"},{"eventDate":"2032-05-07T23:28:59.145Z","eventAction":"expiration"},{"eventDate":"2015-05-07T23:28:59.145Z","eventAction":"registration"},{"eventDate":"2025-07-17T21:44:39.018Z","eventAction":"last changed"},{"eventDate":"2025-08-05T05:56:01.284Z","eventAction":"last update of RDAP database"}],"handle":"b99b619fd8cc4b87b97e77c9d8d42d70-LROR","status":["client delete prohibited","client transfer prohibited"],"ldhName":"devcolor.org","notices":[{"links":[{"rel":"alternate","href":"https://thenew.org/org-people/about-pir/policies/","type":"text/html","value":"https://rdap.publicinterestregistry.org/rdap/domain/devcolor.org"}],"title":"Terms of Service","description":["Public Interest Registry provides this RDAP service for informational purposes only, and to assist persons in obtaining information about or related to a domain name registration record. Public Interest Registry does not guarantee its accuracy. Users accessing the Public Interest Registry RDAP service agree to use the data only for lawful purposes, and under no circumstances may this data be used to: a) allow, enable, or otherwise support the transmission by e-mail, telephone, or facsimile of mass unsolicited, commercial advertising or solicitations to entities other than the registrar's own existing customers and b) enable high volume, automated, electronic processes that send queries or data to the systems of Public Interest Registry or any ICANN-accredited registrar, except as reasonably necessary to register domain names or modify existing registrations. When using the Public Interest Registry RDAP service, please consider the following: the RDAP service is not a replacement for standard EPP commands to the SRS service. RDAP is not considered authoritative for registered domain objects. The RDAP service may be scheduled for downtime during production or OT&E maintenance periods. Queries to the RDAP services are throttled. If too many queries are received from a single IP address within a specified time, the service will begin to reject further queries for a period of time to prevent disruption of RDAP service access. Abuse of the RDAP system through data mining is mitigated by detecting and limiting bulk query access from single sources. Where applicable, the presence of a [Non-Public Data] tag indicates that such data is not made publicly available due to applicable data privacy laws or requirements. Should you wish to contact the registrant, please refer to the RDAP records available through the registrar URL listed above. Access to non-public data may be provided, upon request, where it can be reasonably confirmed that the requester holds a specific legitimate interest and a proper legal basis for accessing the withheld data. Access to this data can be requested by submitting a request to WHOISrequest@pir.org. Public Interest Registry Inc. reserves the right to modify these terms at any time. By submitting this query, you agree to abide by this policy."]},{"links":[{"rel":"self","href":"https://icann.org/epp","type":"application/rdap+json","value":"https://icann.org/epp"}],"title":"Status Codes","description":["For more information on domain status codes, please visit https://icann.org/epp"]},{"links":[{"rel":"self","href":"https://icann.org/wicf","type":"application/rdap+json","value":"https://icann.org/wicf"}],"title":"RDDS Inaccuracy Complaint Form","description":["URL of the ICANN RDDS Inaccuracy Complaint Form: https://icann.org/wicf"]}],"entities":[{"roles":["registrant"],"events":[{"eventDate":"2025-08-05T05:56:01.284Z","eventAction":"last update of RDAP database"}],"remarks":[{"type":"object redacted due to authorization","title":"REDACTED","description":["Some of the data in this object has been removed."]}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text",""],["org",{"type":"work"},"text","Dev Color"],["adr",{"cc":"US"},"text",["","","","","CA","",""]]]],"objectClassName":"entity"},{"links":[{"rel":"self","href":"https://rdap.publicinterestregistry.org/rdap/entity/895","type":"application/rdap+json","value":"https://rdap.publicinterestregistry.org/rdap/entity/895"}],"roles":["registrar"],"handle":"895","entities":[{"roles":["abuse"],"handle":"8836864e8a754efa978e3a674396df38-LROR","vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","Squarespace Abuse"],["tel",{"type":"voice"},"uri","tel:+1.6466935324"],["email",{},"text","abuse-complaints@squarespace.com"]]],"objectClassName":"entity"}],"publicIds":[{"type":"IANA Registrar ID","identifier":"895"}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","Squarespace Domains II LLC"]]],"objectClassName":"entity"}],"publicIds":[{"type":"IANA Registrar ID","identifier":"895"}],"secureDNS":{"maxSigLife":1,"delegationSigned":false},"nameservers":[{"handle":"01e3abe308884682bae09c24d90f346f-LROR","status":["associated"],"ldhName":"betty.ns.cloudflare.com","unicodeName":"betty.ns.cloudflare.com","objectClassName":"nameserver"},{"handle":"38265a6024ba4700ae2dd2b1da63693b-LROR","status":["associated"],"ldhName":"buck.ns.cloudflare.com","unicodeName":"buck.ns.cloudflare.com","objectClassName":"nameserver"}],"unicodeName":"devcolor.org","objectClassName":"domain","rdapConformance":["rdap_level_0","icann_rdap_response_profile_0","icann_rdap_technical_implementation_guide_0"]}}	Domain is active
rumahweb.com	com	com	ICANN	HTTP 200	104.26.10.225	US	{"youtube":["https://youtube.com/rumahwebtv"],"facebook":["https://facebook.com/RumahwebIndonesia"],"linkedin":["https://linkedin.com/company/rumahweb"],"instagram":["https://instagram.com/rumahwebgram"],"x-twitter":["https://twitter.com/rumahwebtweet"]}	2026-08-16	PHP, RSS, HSTS, MySQL, HTTP/3, Favicon, Sendgrid, Elementor 3.10.1, WordPress, Amazon SES	2026-08-17	TRUE	{"A":["104.26.10.225","104.26.11.225","172.67.72.221"],"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":["asa.ns.cloudflare.com","buck.ns.cloudflare.com"],"SOA":{"mname":"asa.ns.cloudflare.com","retry":2400,"rname":"dns.cloudflare.com","expire":604800,"serial":2411466378,"minimum":1800,"refresh":10000},"TXT":["5BC8-E938-087B-03FE-8F9C-A122-9F4A-D833","amazonses:utCmO2KUclXxi0RzDXiucyc19l16gn6qgG2F2xiyDcU=","google-site-verification=-DL1xFSQGa3GQHNGtsaNKdySI9DACNnJFu9ugm9MEO0","google-site-verification=CT-zEMYfEFGvHidHTwa3uSAN_Yr5_k4AVk7xDJcYPaA","google-site-verification=q2ngQ5Ca-l8eZDXgQJ2fJa8PNqD8Egi390xJogE7_5k","google-site-verification=uNM_CxtV0jUqGvxN5y0ik2vBFNZ3T63LP0AXF4lP5tg","v=spf1 a mx ip4:103.247.8.75 ip4:103.247.9.92 ip4:103.253.214.201 ip4:103.253.215.49 ip4:103.127.136.25 ip4:103.253.212.20 ip4:103.253.213.142 include:amazonses.com include:_spf.google.com include:sendgrid.net include:mail.registrar.eu include:smtp-dev.ru mahweb.net -all"],"AAAA":["2606:4700:20::681a:ae1","2606:4700:20::681a:be1","2606:4700:20::ac43:48dd"],"HTTPS":[{"params":["alpn=h3,h2","ipv4hint=104.26.10.225,104.26.11.225,172.67.72.221","ipv6hint=2606:4700:20::681a:ae1,2606:4700:20::681a:be1,2606:4700:20::ac43:48dd"],"target":"","priority":1}]}	0.00000231786	14,650,257	2026-03-04	RDAP	2002-02-19	2030-02-19	2026-03-04	CV. 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wisconsin.edu	edu	edu	ICANN	HTTP 200	128.104.80.36	US	{"youtube":["https://youtube.com/@UniversitiesWI"],"facebook":["https://facebook.com/universitiesofwisconsin"],"linkedin":["https://linkedin.com/company/universities-of-wisconsin"],"instagram":["https://instagram.com/universitieswi"],"x-twitter":["https://twitter.com/UniversitiesWI"]}	2026-07-17	Ada, PHP 8.3.31, RSS, MySQL, Plesk, jQuery, Favicon, core-js, WordPress 7.0, Google Ads	2026-08-10	TRUE	{"A":["128.104.80.36"],"MX":[{"host":"wisconsin-edu.mail.protection.outlook.com","priority":0}],"NS":["adns1.doit.wisc.edu","adns2.doit.wisc.edu","adns3.doit.wisc.edu","adns4.doit.wisc.edu"],"SOA":{"mname":"adns1.doit.wisc.edu","retry":1800,"rname":"hostmaster.doit.wisc.edu","expire":3628800,"serial":2350,"minimum":600,"refresh":7200},"TXT":["11864798","552885FE778BF2EBA0C77A87CF33D27E","586E907A28E109BAEE42F917AD0753E6","5CA2605A4588CFC8C525C892E416CB38","5t5bfqvrqn677svavlc3ipem8d","CxMy8u7zjrite0WogMeQvE81fPPiYteS0crPn17iGjdqrqxH9M7zSdfHhWv46MV9Q3qt5c8U6P4Ti9f0U8mPlA==","MS=ms73795984","SFMC-ruB33P0DHfxQFNgSFceDBD3HKCVZAwt6uFZN1KpV","adobe-idp-site-verification=aebe8ba42fe3662b5fc531b8dbb5f655d614376278ff452bf844961ad34c65a1","apple-domain-verification=tlMdNIlTnGRklz7X","cisco-ci-domain-verification=2cc018c4e5b246ebaf7eebb23d992911a5bc9dc3994e82d09157c0f49ea8bfc8","duo_sso_verification=TmjFOCmzbvD3HUXOJtS9Yeodbkv2hniY7EuKwrHldVvapHRTVSkP9BbHhZ346s7R","smartsheet-site-validation=TsIfdK2r59hw_yxZvmw93lqZz07W2prK","uqfi8koiohvmqqlelaaieshjit","v=spf1 include:spf.protection.outlook.com include:e2ma.net include:securityiqmail.net ip4:128.104.80.63 ~all"]}	0.00000183658	17,388,402	2026-07-30	WHOIS	1997-03-05	2027-07-31	2026-06-02	—	{"raw_response":"This Registry database contains ONLY .EDU domains.\nThe data in the EDUCAUSE Whois database is provided\nby EDUCAUSE for information purposes in order to\nassist in the process of obtaining information about\nor related to .edu domain registration records.\n\nThe EDUCAUSE Whois database is authoritative for the\n.EDU domain.\n\nA Web interface for the .EDU EDUCAUSE Whois Server is\navailable at: http://whois.educause.edu\n\nBy submitting a Whois query, you agree that this information\nwill not be used to allow, enable, or otherwise support\nthe transmission of unsolicited commercial advertising or\nsolicitations via e-mail. The use of electronic processes to\nharvest information from this server is generally prohibited\nexcept as reasonably necessary to register or modify .edu\ndomain names.\n\n-------------------------------------------------------------\n\nDomain Name: WISCONSIN.EDU\n\nRegistrant:\n\tUniversity of Wisconsin - Extension\n\tInformation Systems\n\t432 North Lake Street\n\tMadison, WI 53706\n\tUSA\n\nAdministrative Contact:\n\tDomain Admin\n\tUW-Madison Network Operations Center\n\t1210 W Dayton\n\tMadison, WI 53706\n\tUSA\n\t+1.6082634188\n\thostmaster@doit.wisc.edu\n\nTechnical Contact:\n\tMichael Schlicht\n\tUniversity Of Wisconsin Madison\n\t1210 W Dayton\n\tMadison, WI 53706\n\tUSA\n\t+1.6082634188\n\thostmaster@doit.wisc.edu\n\nName Servers:\n\tADNS2.DOIT.WISC.EDU\n\tADNS1.DOIT.WISC.EDU\n\tADNS3.DOIT.WISC.EDU\n\nDomain record activated: 05-Mar-1997\nDomain record last updated: 02-Jun-2026\nDomain expires: 31-Jul-2027"}	Domain is active
…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…

Showing 5 of 105,000 rows · Technologies · Full website tech stack per site: CMS, payments, analytics, frameworks.

↓ Download preview (20 rows, free) Buy Technologies — €159 / month

Twenty Twenty-One sites by country

Country	Sites	Share
🇺🇸 United States	37,210	36.1%
🇩🇪 Germany	18,775	18.2%
🇫🇷 France	4,908	4.8%
🇯🇵 Japan	4,416	4.3%
🇧🇷 Brazil	3,745	3.6%

Twenty Twenty-One sites by TLD

TLD	Sites	Share
.com	41,779	39.8%
.de	9,844	9.4%
.br	4,616	4.4%
.org	3,949	3.8%
.nl	3,409	3.2%

Which websites are using Twenty Twenty-One?

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

Open the Twenty Twenty-One 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 Twenty Twenty-One?

webatla detects Twenty Twenty-One on 105K websites, refreshed daily, each with its domain, DNS, WHOIS, IP, country and ranking.

Can I download the list of websites using Twenty Twenty-One?

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 Twenty Twenty-One?

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

What else is in the Twenty Twenty-One technology data?

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

Can I download just the sites using Twenty Twenty-One, or the whole database?

Both. Every site running Twenty Twenty-One 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 Twenty Twenty-One?

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 Twenty Twenty-One 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.