Download list of all Headless UI sites

Name: Websites that use Headless UI
Creator: webatla
License: https://webatla.com/terms

About Headless UI Database preview By country By TLD Download

69,669 Sites detected

0.0% Of all websites

Preview Headless UI site datasets

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

webatla-technologies-headless-ui-2026-10-13.jsonl.zst · 69,669 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
data.gouv.fr	gouv.fr	fr	ICANN	HTTP 200	37.59.183.73	FR	{"github":["https://github.com/datagouv/data.gouv.fr","https://github.com/opendatateam/udata","https://github.com/datagouv/cdata/commit/5f540e2"],"bluesky":["https://bsky.app/profile/datagouvfr.bsky.social"],"youtube":["https://youtube.com/@data-gouv-fr"],"linkedin":["https://linkedin.com/company/data-gouv-fr"]}	2026-10-13	HSTS, Nginx 1.30.1, HTTP/2, Sentry, Vue.js, Favicon, Node.js, Nuxt.js, Open Graph, Headless UI	0.00000883419	17,141,982	2011-02-23	2026-12-06
proton.me	me	me	ICANN	HTTP 200	185.70.42.45	CH	{"reddit":["https://reddit.com/r/ProtonMail"],"tiktok":["https://tiktok.com/@privacytok"],"bluesky":["https://bsky.app/profile/proton.me"],"discord":["https://discord.gg/proton"],"threads":["https://threads.net/@protonprivacy"],"youtube":["https://youtube.com/@ProtonAG/playlists","https://youtube.com/@ProtonPrivacy/featured","https://youtube.com/@ProtonAG?sub_confirmation=1"],"facebook":["https://facebook.com/Proton"],"linkedin":["https://linkedin.com/company/protonprivacy"],"telegram":["https://t.me/proton_privacy"],"instagram":["https://instagram.com/protonprivacy"],"x-twitter":["https://x.com/intent/user?screen_name=ProtonPrivacy"]}	2026-09-16	PWA, HSTS, HTTP/2, PayPal, Algolia, Favicon, hreflang, Open Graph, Headless UI, Proton Mail	0.00000813338	17,664,376	2010-10-10	2028-10-10
fillout.com	com	com	ICANN	HTTP 200	76.76.21.21	US	{"linkedin":["https://linkedin.com/company/fillout"],"x-twitter":["https://x.com/fillout"]}	2026-09-02	HSTS, HTTP/2, OpenAI, Vercel, HubSpot, Cloudflare, Open Graph, Headless UI, Priority Hints, Google Workspace	0.00000687869	16,918,692	2001-05-31	2030-05-31
chalmers.se	se	se	ICANN	HTTP 200	129.16.225.208	SE	{"tiktok":["https://tiktok.com/@chalmers.student"],"youtube":["https://youtube.com/chalmersuniversity"],"facebook":["https://facebook.com/chalmersuniversityoftechnology"],"linkedin":["https://se.linkedin.com/school/chalmers-university-of-technology"],"instagram":["https://instagram.com/chalmers.university"]}	2026-10-01	PWA, HSTS, Nginx 1.20.1, HTTP/2, Favicon, Varnish 6.0, hreflang, Open Graph, Headless UI, Microsoft 365	0.00000425195	17,059,208	1985-01-17	2026-12-31
hi.events	events	events	ICANN	HTTP 200	104.26.4.44	US	{"github":["https://github.com/HiEventsDev/hi.events"],"youtube":["https://youtube.com/channel/UCOnMogxOYxg0Vvvbrrxeddw"],"x-twitter":["https://twitter.com/HiEventsTickets"]}	2026-09-04	PWA, HSTS, HTTP/2, Vercel, Favicon, Cloudflare, Open Graph, Headless UI, Priority Hints, Google Font API	0.00000387147	16,667,245	2023-10-16	2026-10-16
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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
data.gouv.fr	gouv.fr	fr	ICANN	HTTP 200	37.59.183.73	FR	{"github":["https://github.com/datagouv/data.gouv.fr","https://github.com/opendatateam/udata","https://github.com/datagouv/cdata/commit/5f540e2"],"bluesky":["https://bsky.app/profile/datagouvfr.bsky.social"],"youtube":["https://youtube.com/@data-gouv-fr"],"linkedin":["https://linkedin.com/company/data-gouv-fr"]}	2026-10-13	HSTS, Nginx 1.30.1, HTTP/2, Sentry, Vue.js, Favicon, Node.js, Nuxt.js, Open Graph, Headless UI	2026-09-29	TRUE	{"A":["37.59.183.73","37.59.183.91","37.59.183.92"],"MX":[{"host":"mx.ox.numerique.gouv.fr","priority":1}],"NS":["dns200.anycast.me","ns200.anycast.me"],"SOA":{"mname":"dns200.anycast.me","retry":3600,"rname":"tech.ovh.net","expire":3600000,"serial":2090647033,"minimum":300,"refresh":86400},"TXT":["HARICA-4B82HAT80k90ZhxbMFI","brevo-code:dd31dfeba26dea3dbb822aba4ec57417","google-site-verification=kd5n9r1Zcce-nubEuA7xt11I8NUeJy8u7TumXWr3Gj4","v=spf1 include:_spf.ox.numerique.gouv.fr include:spf.brevo.com include:_spf.crisp.email mx -all"]}	0.00000883419	17,141,982	2025-12-06	RDAP	2011-02-23	2026-12-06	2025-12-06	OVH	{"raw_response":{"links":[{"rel":"self","href":"https://rdap.nic.fr/domain/data.gouv.fr","value":"https://rdap.nic.fr/domain/data.gouv.fr"}],"events":[{"eventDate":"2011-02-23T11:20:19Z","eventAction":"registration"},{"eventDate":"2026-12-06T07:25:00Z","eventAction":"expiration"},{"eventDate":"2025-12-06T07:30:58.447499Z","eventAction":"last changed"},{"eventDate":"2025-12-06T13:14:05.01005444Z","eventAction":"last update of RDAP database"}],"handle":"DOM000002905102-FRNIC","status":["active","auto renew period"],"ldhName":"data.gouv.fr","entities":[{"links":[{"rel":"self","href":"https://rdap.nic.fr/entity/RAR202-FRNIC","value":"https://rdap.nic.fr/entity/RAR202-FRNIC"}],"roles":["registrar","sponsor"],"events":[{"eventDate":"1999-10-18T00:00:00Z","eventAction":"registration"},{"eventDate":"2022-10-01T11:40:48.761912Z","eventAction":"last changed"}],"handle":"RAR202-FRNIC","port43":"whois.ovh.com","status":["active"],"remarks":[{"type":"registrar restricted publication","description":["No"]}],"entities":[{"links":[{"rel":"self","href":"https://rdap.nic.fr/entity/{handle}","value":"https://rdap.nic.fr/entity/{handle}"}],"roles":["abuse"],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","Contact Abuse"],["email",{},"text","abuse@ovh.net"],["tel",{"type":"voice"},"uri","tel:+33.899701761"]]],"objectClassName":"entity"}],"publicIds":[{"type":"IANA Registrar ID","identifier":"433"}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","OVH"],["tel",{"type":"voice"},"uri","tel:+33.899701761"],["tel",{"type":"fax"},"uri","tel:+33.320200958"],["email",{},"text","support@ovh.net"],["url",{},"uri","http://www.ovh.com"],["adr",{},"text",["","","2 Rue Kellermann","ROUBAIX","","59100","FR"]]]],"objectClassName":"entity"},{"links":[{"rel":"self","href":"https://rdap.nic.fr/entity/ESPM9-FRNIC","value":"https://rdap.nic.fr/entity/ESPM9-FRNIC"}],"roles":["registrant"],"events":[{"eventDate":"2013-12-06T00:00:00Z","eventAction":"registration"},{"eventDate":"2024-03-20T15:48:03.22704Z","eventAction":"last changed"}],"handle":"ESPM9-FRNIC","status":["associated","active"],"remarks":[{"type":"contact restricted publication","description":["NO"]},{"type":"contact obsolete","description":["NO"]},{"type":"contact type","description":["ORGANIZATION"]},{"type":"reach medium","description":["EMAIL"]},{"type":"reach date","description":["2019-12-03T00:00:00Z"]},{"type":"reach source","description":["REGISTRY"]},{"type":"reachable","description":["YES"]},{"type":"eligibility status","description":["OK"]},{"type":"eligibility source","description":["REGISTRY"]},{"type":"eligibility date","description":["2019-12-03T00:00:00Z"]},{"type":"registrar name","description":["OVH"]}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","Etat francais represente par ETALAB SGMAP PREMIER MINISTRE"],["org",{},"text",""],["adr",{},"text",["","","18, rue Vaneau","Paris","","75700","FR"]],["email",{},"text","contact@dri.fr"],["tel",{"type":"voice"},"uri","tel:+33.142757883"]]],"objectClassName":"entity"},{"links":[{"rel":"self","href":"https://rdap.nic.fr/entity/OVH5-FRNIC","value":"https://rdap.nic.fr/entity/OVH5-FRNIC"}],"roles":["technical","administrative"],"events":[{"eventDate":"1999-12-22T00:00:00Z","eventAction":"registration"},{"eventDate":"2025-12-06T12:47:26.259179Z","eventAction":"last changed"}],"handle":"OVH5-FRNIC","status":["associated","active"],"remarks":[{"type":"contact restricted publication","description":["NO"]},{"type":"contact obsolete","description":["NO"]},{"type":"contact type","description":["ORGANIZATION"]},{"type":"reachable","description":["NO"]},{"type":"eligibility status","description":["NotIdentified"]},{"type":"registrar name","description":["OVH"]}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","OVH NET"],["org",{},"text",""],["adr",{},"text",["","",["OVH","140, quai du Sartel"],"Roubaix","","59100","FR"]],["email",{},"text","tech@ovh.net"],["tel",{"type":"voice"},"uri","tel:+33.899701761"]]],"objectClassName":"entity"}],"nameservers":[{"links":[{"rel":"self","href":"https://rdap.nic.fr/nameserver/dns200.anycast.me","value":"https://rdap.nic.fr/nameserver/dns200.anycast.me"}],"handle":"HOST70189-FRNIC","status":["associated","active"],"ldhName":"dns200.anycast.me","remarks":[{"title":"result set truncated due to authorization","description":["The list of results does not contain all results due to lack of authorization.","This may indicate to some clients that proper authorization will yield a longer result set."]}],"entities":[{"links":[{"rel":"self","href":"https://rdap.nic.fr/entity/RAR939-FRNIC","value":"https://rdap.nic.fr/entity/RAR939-FRNIC"}],"roles":["registrar","sponsor"],"events":[{"eventDate":"2014-07-29T15:35:33Z","eventAction":"registration"},{"eventDate":"2022-10-12T18:54:01.785057Z","eventAction":"last changed"}],"handle":"RAR939-FRNIC","port43":"whois.nic.fr","status":["active"],"remarks":[{"type":"registrar restricted publication","description":["No"]}],"publicIds":[{"type":"IANA Registrar ID","identifier":"9999"}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","Registry Operations"],["tel",{"type":"voice"},"uri","tel:+33.139308300"],["tel",{"type":"fax"},"uri","tel:+33.139308301"],["email",{},"text","support@afnic.fr"],["url",{},"uri","https://www.afnic.fr"],["adr",{},"text",["","",["AFNIC","immeuble le Stephenson","1, rue Stephenson"],"Montigny-Le-Bretonneux","","78180","FR"]]]],"objectClassName":"entity"}],"ipAddresses":{},"objectClassName":"nameserver"},{"links":[{"rel":"self","href":"https://rdap.nic.fr/nameserver/ns200.anycast.me","value":"https://rdap.nic.fr/nameserver/ns200.anycast.me"}],"handle":"HOST70190-FRNIC","status":["associated","active"],"ldhName":"ns200.anycast.me","remarks":[{"title":"result set truncated due to authorization","description":["The list of results does not contain all results due to lack of authorization.","This may indicate to some clients that proper authorization will yield a longer result set."]}],"entities":[{"links":[{"rel":"self","href":"https://rdap.nic.fr/entity/RAR939-FRNIC","value":"https://rdap.nic.fr/entity/RAR939-FRNIC"}],"roles":["registrar","sponsor"],"events":[{"eventDate":"2014-07-29T15:35:33Z","eventAction":"registration"},{"eventDate":"2022-10-12T18:54:01.785057Z","eventAction":"last changed"}],"handle":"RAR939-FRNIC","port43":"whois.nic.fr","status":["active"],"remarks":[{"type":"registrar restricted publication","description":["No"]}],"publicIds":[{"type":"IANA Registrar ID","identifier":"9999"}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","Registry Operations"],["tel",{"type":"voice"},"uri","tel:+33.139308300"],["tel",{"type":"fax"},"uri","tel:+33.139308301"],["email",{},"text","support@afnic.fr"],["url",{},"uri","https://www.afnic.fr"],["adr",{},"text",["","",["AFNIC","immeuble le Stephenson","1, rue Stephenson"],"Montigny-Le-Bretonneux","","78180","FR"]]]],"objectClassName":"entity"}],"ipAddresses":{},"objectClassName":"nameserver"}],"whoisStatus":"ACTIVE","objectClassName":"domain","rdapConformance":["rdap_level_0","icann_rdap_technical_implementation_guide_1","icann_rdap_response_profile_1"]}}	Domain is active
proton.me	me	me	ICANN	HTTP 200	185.70.42.45	CH	{"reddit":["https://reddit.com/r/ProtonMail"],"tiktok":["https://tiktok.com/@privacytok"],"bluesky":["https://bsky.app/profile/proton.me"],"discord":["https://discord.gg/proton"],"threads":["https://threads.net/@protonprivacy"],"youtube":["https://youtube.com/@ProtonAG/playlists","https://youtube.com/@ProtonPrivacy/featured","https://youtube.com/@ProtonAG?sub_confirmation=1"],"facebook":["https://facebook.com/Proton"],"linkedin":["https://linkedin.com/company/protonprivacy"],"telegram":["https://t.me/proton_privacy"],"instagram":["https://instagram.com/protonprivacy"],"x-twitter":["https://x.com/intent/user?screen_name=ProtonPrivacy"]}	2026-09-16	PWA, HSTS, HTTP/2, PayPal, Algolia, Favicon, hreflang, Open Graph, Headless UI, Proton Mail	2026-10-05	TRUE	{"A":["185.70.42.45"],"DS":[{"digest":"0ebdded04fa7be35b5262d6b34f6a047b3105b15c2b69bc5544087d5b9d6e26b","key_tag":12382,"algorithm":8,"digest_type":2}],"MX":[{"host":"mail.protonmail.ch","priority":10},{"host":"mailsec.protonmail.ch","priority":20}],"NS":["ns1.proton.me","ns2.proton.me","ns3.proton.me"],"CAA":[{"tag":"issue","flags":0,"value":"letsencrypt.org"},{"tag":"issue","flags":0,"value":"sectigo.com"}],"SOA":{"mname":"ns1.proton.me","retry":144,"rname":"support.proton.me","expire":1814400,"serial":2026073586,"minimum":7200,"refresh":1200},"TXT":["google-site-verification=2FGIDo-Gf-lWE6t_gWd9gpPTehHD85hbNiEujPVgysc","google-site-verification=4UIZgETX8lGnv0WwpeJJbszo9daKOdXXYBKCA2XLf94","google-site-verification=MUjtKY-4uQAjE92Z2-s1nm9m4mvdqY2z6HCvi_Bj4so","google-site-verification=QviHfE1VQ57-tDmDLxM6BQH1mdgvdQ_0QsIvCht2IaU","google-site-verification=_ayl1WqWIag2WkIbK4sNg_x3NCT5nYOl_DgtFPTYKeg","linkedin-site-verification=01e79150-bf68-4e0c-ad04-822dc1015b3b","protonmail-verification=5262a92f988e64f1be1362138befdf1e19d6a4c1","v=spf1 include:_spf.protonmail.ch ~all","yandex-verification: 95a7888a0f987e6a","zoom-domain-verification=ZOOM_verify_5990c1fbb09d4c6aba062cded6cbdf06"],"DNSKEY":[{"flags":256,"protocol":3,"algorithm":8,"public_key":"AwEAAcWRrkoJqJhvJhoeoUlk7dUj4by2WK8fgCeSsL8qxMJ6Q+nyR9FE/yDEfI8y48CZpBmQE+kOxmq2LifappLnG7MebFhkGQpeHRxzkiMFYDnGxZ2k9gSNeMqhtw4GQouBGbZq1IZbo+hWH3sHnaoJPc5/nAbkV2PpUawZ8ZMc+0L4bJV916ThvI67BdtPggzsfAG46EEnMFOTmv288tFiCGXbPJPNX/LyTqwWmNYXU5XxblEQ6TzkFE/5P1i6neX7ke9PLeTsF9PJGftuirbtLY80Yq1KgyceLgICEaKd+UWkC5u4EXjdc+Tl39bP3gRzGhs5lSdmfrRiIO3X80ifz2c="},{"flags":257,"protocol":3,"algorithm":8,"public_key":"AwEAAbTBsAv0iLidN9T4BG9PTwMC5YcuVTgkLzXfH+nqyX5N3G/O3EhueazmAoC/eaKOHQnE3uubit3PggDRkNXcM6ifVfBYISblnB3uOSy6PtwTOzdRFz+UjzfUFnssIRr3da8XQL1q3lcE+hd+lO3E6YfQvJPsShcDdG0R8C+ZthZryW1859qEPItJLOATTDosHcVJYYA7nmPolUhhoifwRBwXm06V2fPNMtuvO1Q5oVxbJc16/5W4yCCwiT+SVO9NvIPAvv1TAFfwBZGcNCrYyiz5++NFlY6sYqrQrRiJWnWKBuXA1Nsh30OHPjG0jHWsPxD8yLeMb6EdLYTgkwJryac="}]}	0.00000813338	17,664,376	2026-10-09	WHOIS	2010-10-10	2028-10-10	2026-09-13	MarkMonitor Inc.	{"raw_response":"This domain is protected by the Registry Lock service. If you are the registrant and wish to take action on this lock, please contact your registrar.\r\n\r\nDomain Name: proton.me\r\nRegistry Domain ID: REDACTED\r\nRegistrar WHOIS Server: whois.markmonitor.com\r\nRegistrar URL: http://www.markmonitor.com\r\nUpdated Date: 2026-09-13T10:44:56Z\r\nCreation Date: 2010-10-10T21:20:51Z\r\nRegistry Expiry Date: 2028-10-10T21:20:51Z\r\nRegistrar: MarkMonitor Inc.\r\nRegistrar IANA ID: 292\r\nRegistrar Abuse Contact Email: abusecomplaints@markmonitor.com\r\nRegistrar Abuse Contact Phone: +1.2083895740\r\nDomain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited\r\nDomain Status: serverDeleteProhibited https://icann.org/epp#serverDeleteProhibited\r\nDomain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited\r\nDomain Status: serverTransferProhibited https://icann.org/epp#serverTransferProhibited\r\nDomain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited\r\nDomain Status: serverUpdateProhibited https://icann.org/epp#serverUpdateProhibited\r\nRegistry Registrant ID: REDACTED\r\nRegistrant Name: REDACTED\r\nRegistrant Organization: Proton AG\r\nRegistrant Street: REDACTED\r\nRegistrant City: REDACTED\r\nRegistrant State/Province: Geneva\r\nRegistrant Postal Code: REDACTED\r\nRegistrant Country: CH\r\nRegistrant Phone: REDACTED\r\nRegistrant Phone Ext: REDACTED\r\nRegistrant Fax: REDACTED\r\nRegistrant Fax Ext: REDACTED\r\nRegistrant Email: REDACTED\r\nRegistry Admin ID: REDACTED\r\nAdmin Name: REDACTED\r\nAdmin Organization: REDACTED\r\nAdmin Street: REDACTED\r\nAdmin City: REDACTED\r\nAdmin State/Province: REDACTED\r\nAdmin Postal Code: REDACTED\r\nAdmin Country: REDACTED\r\nAdmin Phone: REDACTED\r\nAdmin Phone Ext: REDACTED\r\nAdmin Fax: REDACTED\r\nAdmin Fax Ext: REDACTED\r\nAdmin Email: REDACTED\r\nRegistry Tech ID: REDACTED\r\nTech Name: REDACTED\r\nTech Organization: REDACTED\r\nTech Street: REDACTED\r\nTech City: REDACTED\r\nTech State/Province: REDACTED\r\nTech Postal Code: REDACTED\r\nTech Country: REDACTED\r\nTech Phone: REDACTED\r\nTech Phone Ext: REDACTED\r\nTech Fax: REDACTED\r\nTech Fax Ext: REDACTED\r\nTech Email: REDACTED\r\nName Server: ns1.proton.me\r\nName Server: ns2.proton.me\r\nName Server: ns3.proton.me\r\nDNSSEC: signedDelegation\r\nURL of the ICANN Whois Inaccuracy Complaint Form: https://icann.org/wicf/\r\n>>> Last update of WHOIS database: 2026-10-08T22:28:08Z <<<\r\n\r\nFor more information on Whois status codes, please visit https://icann.org/epp\r\n\r\nTerms of Use: Access to WHOIS information is provided to assist persons in determining the contents of a domain name registration record in the registry database. The data in this record is provided by Identity Digital or the Registry Operator for informational purposes only, and accuracy is not guaranteed. This service is intended only for query-based access. You agree that you will use this data only for lawful purposes and that, under no circumstances will you use this data 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 data recipient's own existing customers; or (b) enable high volume, automated, electronic processes that send queries or data to the systems of Registry Operator, a Registrar, or Identity Digital except as reasonably necessary to register domain names or modify existing registrations. When using the Whois service, please consider the following: The Whois service is not a replacement for standard EPP commands to the SRS service. Whois is not considered authoritative for registered domain objects. The Whois service may be scheduled for downtime during production or OT&E maintenance periods. Queries to the Whois 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 Whois service access. Abuse of the Whois 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 Whois 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 provided by Identity Digital can be requested by submitting a request via the form found at https://www.identity.digital/about/policies/whois-layered-access/. The Registrar of Record identified in this output may have an RDDS service that can be queried for additional information on how to contact the Registrant, Admin, or Tech contact of the queried domain name. Identity Digital Inc. and Registry Operator reserve the right to modify these terms at any time. By submitting this query, you agree to abide by this policy."}	Domain is active
fillout.com	com	com	ICANN	HTTP 200	76.76.21.21	US	{"linkedin":["https://linkedin.com/company/fillout"],"x-twitter":["https://x.com/fillout"]}	2026-09-02	HSTS, HTTP/2, OpenAI, Vercel, HubSpot, Cloudflare, Open Graph, Headless UI, Priority Hints, Google Workspace	2026-10-08	TRUE	{"A":["76.76.21.21"],"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},{"host":"cnadynzg5hl54v5uvpg3w7dtkdep3ndbsva4kvbvc2y2dnu6mjua.mx-verification.google.com","priority":15}],"NS":["nena.ns.cloudflare.com","reese.ns.cloudflare.com"],"SOA":{"mname":"nena.ns.cloudflare.com","retry":2400,"rname":"dns.cloudflare.com","expire":604800,"serial":2416541698,"minimum":1800,"refresh":10000},"TXT":["facebook-domain-verification=bb7jco1elb46g9f0xz32l5yy94bss0","google-site-verification=42eHSrtkD6jigKUsVNfg28mwsoo4giE5J9Zc7ILDzts","google-site-verification=E0A8Nybp195XtKvNu3xzUMj9tGGVQcVUNRaxobaeYmg","hubspot-developer-verification=ODA3YTAyOWQtNjhiYi00ZjIxLTg5MWMtZjVjODNhYjg0MzQ0","openai-domain-verification=dv-As4BDMDmXGwd7YfqhfWNDBj8","v=spf1 include:_spf.google.com ~all"]}	0.00000687869	16,918,692	2026-05-22	RDAP	2001-05-31	2030-05-31	2026-01-12	GoDaddy.com, LLC	{"raw_response":{"links":[{"rel":"self","href":"https://rdap.verisign.com/com/v1/domain/FILLOUT.COM","type":"application/rdap+json","value":"https://rdap.verisign.com/com/v1/domain/FILLOUT.COM"},{"rel":"related","href":"https://rdap.godaddy.com/v1/domain/FILLOUT.COM","type":"application/rdap+json","value":"https://rdap.godaddy.com/v1/domain/FILLOUT.COM"}],"events":[{"eventDate":"2001-05-31T10:31:49Z","eventAction":"registration"},{"eventDate":"2030-05-31T10:31:49Z","eventAction":"expiration"},{"eventDate":"2026-01-12T14:55:38Z","eventAction":"last changed"},{"eventDate":"2026-05-22T02:24:23Z","eventAction":"last update of RDAP database"}],"handle":"71591615_DOMAIN_COM-VRSN","status":["client delete prohibited","client renew prohibited","client transfer prohibited","client update prohibited"],"ldhName":"FILLOUT.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/fillout.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/fillout.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.godaddy.com","type":"text/html","value":"https://rdap.godaddy.com/v1/"}],"roles":["registrar"],"handle":"146","entities":[{"roles":["abuse"],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text",""],["tel",{"type":"voice"},"uri","tel:480-624-2505"],["email",{},"text","abuse@godaddy.com"]]],"objectClassName":"entity"}],"publicIds":[{"type":"IANA Registrar ID","identifier":"146"}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","GoDaddy.com, LLC"]]],"objectClassName":"entity"}],"secureDNS":{"delegationSigned":false},"nameservers":[{"ldhName":"NENA.NS.CLOUDFLARE.COM","objectClassName":"nameserver"},{"ldhName":"REESE.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
chalmers.se	se	se	ICANN	HTTP 200	129.16.225.208	SE	{"tiktok":["https://tiktok.com/@chalmers.student"],"youtube":["https://youtube.com/chalmersuniversity"],"facebook":["https://facebook.com/chalmersuniversityoftechnology"],"linkedin":["https://se.linkedin.com/school/chalmers-university-of-technology"],"instagram":["https://instagram.com/chalmers.university"]}	2026-10-01	PWA, HSTS, Nginx 1.20.1, HTTP/2, Favicon, Varnish 6.0, hreflang, Open Graph, Headless UI, Microsoft 365	2026-10-02	TRUE	{"A":["129.16.225.208"],"DS":[{"digest":"5750b27b4cafc5c94f42dace5a6affc1af647e57f9f6813038a524c994573074","key_tag":61013,"algorithm":13,"digest_type":2}],"MX":[{"host":"chalmers-se.mail.protection.outlook.com","priority":10}],"NS":["ns1.chalmers.se","ns2.chalmers.se","ns3.chalmers.se","sunic.sunet.se"],"LOC":["57 41 23.900 N 11 58 38.800 E 50m 1m 50m 20m"],"SOA":{"mname":"ns1.chalmers.se","retry":3600,"rname":"cth-nic.chalmers.se","expire":1814400,"serial":261001056,"minimum":300,"refresh":14400},"TXT":["HARICA-UNAwJdkNljBQp3EtETZ","IxQ32Cp0vVZHXqLp2pA8M7ySB2BiQVcrf5ECEAXEEP25nH4PbnhVTyLDYDY3/dUH58Gt2SVA5HWpxV/0n3OqbQ==","MS=ms47016442","UINFO: Chalmers Tekniska H\\195\\182gskola (UTF-8) [sv]","UINFO: Chalmers Tekniska H\\246gskola (ISO-8859-1) [sv]","UINFO: Chalmers Tekniska Hogskola [sv]","UINFO: Chalmers University of Technology [en]","ZOOM_verify_VzM3LmjDRKajK0r6i4U8Nw","adobe-idp-site-verification=2f08bb719e96ca4f9b05dde868ad04193eb3ace7052d0cdc1bebcd0183115fb0","anthropic-domain-verification-rm0dj5=omuFoWAiKUv1ld1RaE2XvLMly","apple-domain-verification=MvsPYqcOzN5YzbCH","autodesk-domain-verification=Ql85fr_zPEn0Jyb0OyNf","facebook-domain-verification=9d92s277ebot36swusg8xt09am32zh","google-site-verification=oF0feLOFPGBIp7_IyITWLdXTKcGDXbc4CbPGH2qu-z8","mentimeter-cbc62098-17f2-4a14-986a-fd42319f0835","mindmanager-verification=21d5ed4f63465e42d1177116f4cc2b85eed35edebc0a35c829f145a5d47221e2","v=spf1 ip4:129.16.226.128/26 ip4:129.16.226.153 ip4:129.16.226.249 ip4:129.16.226.250 ip4:129.16.226.251 ip4:129.16.226.252 ip4:129.16.222.145 ip4:129.16.227.69 ip4:129.16.222.137 ip4:129.16.222.107 ip4:129.16.4.104 ip4:129.16.222.112 ?ip4:129.16.0.0/16 include:spf.protection.outlook.com ip4:62.181.197.26 ip4:193.75.93.154 ip4:91.123.56.128 include:_spf.ungapped.com include:spf.topdesk.net include:spf.bngaged.io include:auth.msgapp.com -all"],"AAAA":["2001:6b0:2:2009::611"],"DNSKEY":[{"flags":256,"protocol":3,"algorithm":13,"public_key":"czR05Jz4XFwQ0QmrTq+tUV7oQcNqQNVbLmhWTW391I1m7jwc+Ph3GxXzb7yg8bJiFnaWKDaxbhn44jcIQOOFoQ=="},{"flags":257,"protocol":3,"algorithm":13,"public_key":"+GPNkCz/5dMOWhWLpCbw3yxqY3Bm4KmdEk6bDJJKoVxAHO+EDa9TFUrLLGN9NDEKJ7TTQZ4QGMxYhUlMP6iOGg=="}]}	0.00000425195	17,059,208	2025-12-02	WHOIS	1985-01-17	2026-12-31	2025-12-01	Loopia AB	{"raw_response":"# Copyright (c) 1997- The Swedish Internet Foundation.\n# All rights reserved.\n# The information obtained through searches, or otherwise, is protected\n# by the Swedish Copyright Act (1960:729) and international conventions.\n# It is also subject to database protection according to the Swedish\n# Copyright Act.\n# Any use of this material to target advertising or\n# similar activities is forbidden and will be prosecuted.\n# If any of the information below is transferred to a third\n# party, it must be done in its entirety. This server must\n# not be used as a backend for a search engine.\n# Result of search for registered domain names under\n# the .se top level domain.\n# This whois printout is printed with UTF-8 encoding.\n#\nstate: active\ndomain: chalmers.se\nholder: datcha9954-00001\ncreated: 1985-01-17\nmodified: 2025-12-01\nexpires: 2026-12-31\ntransferred: 2019-02-13\nnserver: ns2.chalmers.se 129.16.253.252 2001:6b0:2:20::1\nnserver: ns3.chalmers.se 192.36.120.11 2001:2040:63::11\nnserver: ns1.chalmers.se 129.16.2.40 2001:6b0:2:10::1\nnserver: sunic.sunet.se\ndnssec: signed delegation\nregistry-lock: unlocked\nstatus: ok\nregistrar: Loopia AB\n"}	Domain is active
hi.events	events	events	ICANN	HTTP 200	104.26.4.44	US	{"github":["https://github.com/HiEventsDev/hi.events"],"youtube":["https://youtube.com/channel/UCOnMogxOYxg0Vvvbrrxeddw"],"x-twitter":["https://twitter.com/HiEventsTickets"]}	2026-09-04	PWA, HSTS, HTTP/2, Vercel, Favicon, Cloudflare, Open Graph, Headless UI, Priority Hints, Google Font API	2026-10-05	TRUE	{"A":["104.26.4.44","104.26.5.44","172.67.70.120"],"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":["razvan.ns.cloudflare.com","tani.ns.cloudflare.com"],"SOA":{"mname":"razvan.ns.cloudflare.com","retry":2400,"rname":"dns.cloudflare.com","expire":604800,"serial":2413308851,"minimum":1800,"refresh":10000},"TXT":["google-site-verification=FCuURziuURC59cUskU0rAVZzvqnLsd31ogrveEdIwkY","v=spf1 a mx include:_spf.mlsend.com ?all"],"AAAA":["2606:4700:20::681a:42c","2606:4700:20::681a:52c","2606:4700:20::ac43:4678"],"HTTPS":[{"params":["alpn=h2","ipv4hint=104.26.4.44,104.26.5.44,172.67.70.120","ipv6hint=2606:4700:20::681a:42c,2606:4700:20::681a:52c,2606:4700:20::ac43:4678"],"target":"","priority":1}]}	0.00000387147	16,667,245	2025-09-23	RDAP	2023-10-16	2026-10-16	2024-01-01	NameCheap, Inc.	—	Domain is active
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Showing 5 of 69,669 rows · Technologies · Full website tech stack per site: CMS, payments, analytics, frameworks.

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Headless UI sites by country

Country	Sites	Share
🇺🇸 United States	56,234	84.8%
🇩🇪 Germany	3,325	5.0%
🇬🇧 United Kingdom	898	1.4%
🇸🇪 Sweden	670	1.0%
🇫🇷 France	571	0.9%

Headless UI sites by TLD

TLD	Sites	Share
.com	20,314	29.2%
.top	12,553	18.0%
.us	10,923	15.7%
.app	1,523	2.2%
.uk	1,469	2.1%

About Headless UI

Component libraries usually announce themselves visually, through class names and a house style that show up wherever the library was used. Headless UI does the opposite, because it ships interaction behaviour and accessibility semantics with no styling at all.

The library provides dropdowns, dialogs, tabs, listboxes and disclosure panels that implement keyboard interaction and ARIA roles properly, and leaves every visual decision to the developer. Tailwind Labs builds it as the companion to their utility-first CSS framework, publishes it under MIT, and released it in 2020. A team reaching for it has already made a cluster of related choices: a component-driven front end in JavaScript, a build step, a design system expressed as utility classes, and enough concern for accessibility to prefer a library that gets focus management right over one that looks finished out of the box.

Detecting the library on a site is therefore a signal about the team, not about the business it belongs to. The site was built by developers working in a modern toolchain rather than assembled in a page builder, and somebody involved reads accessibility guidance. Vendors selling to those teams, meaning design system tooling, component testing, continuous integration, error monitoring, front-end hosting and accessibility audit services, get a qualification signal here that a general framework tag does not give them.

As of October 2026 we see it on 69,669 sites, with 56,234 resolving to United States and .com carrying more than any other suffix. Concentration that heavy is typical of libraries adopted through developer channels rather than through procurement or regional web shops. Part of the pattern is a fact about the technology and part of it is a fact about where the companies using it register and host, and the country column should be read with both in mind.

The unstyled design that makes the library useful also makes it hard to see. There are no distinctive visual classes to match, because the styling is whatever the developer wrote. We identify it from bundle contents, generated component attributes and the markup structures it produces, and a build that renames or strips those can pass unrecognised. The count belongs on the low side of the truth, and it is more likely to catch client-rendered applications than pages prerendered to flat markup.

A per-domain check tells you whether one site uses the library. The value of the full list is in the intersections. Hosts running this library and a particular framework, hosts running it beside a commercial component vendor you would like to replace, or the subset in one market that also runs a specific commerce platform. Intersections like those exist only once the whole detected population sits in a single file where you can filter it.

Frequently asked questions

How many websites use Headless UI?

webatla detects Headless UI on 70K websites, refreshed daily, each with its domain, DNS, WHOIS, IP, country and ranking.

Can I download the list of websites using Headless UI?

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 Headless UI?

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

What else is in the Headless UI technology data?

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

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

Both. Every site running Headless UI 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 Headless UI?

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 Headless UI 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.