Download websites that use Tail
1 live site using Tail right now
Customer data platform · by Tail · Proprietary
Preview Tail site datasets
Tail detection is a value inside the Technologies column. Two datasets carry it, switch between them to compare what's included.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| terraofertas.com | com | com | ICANN | HTTP 200 | 69.49.115.40 | CA | — | 2026-09-19 | Tail | 0.00000000305767 | 15,080,727 | 2009-05-27 | 2027-05-27 |
| … | … | … | … | … | … | … | … | … | … | … | … | … | … |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| terraofertas.com | com | com | ICANN | HTTP 200 | 69.49.115.40 | CA | — | 2026-09-19 | Tail | 2026-09-22 | TRUE | {"A":["69.49.115.40"],"MX":[{"host":"mx.terraempresas.com.br","priority":5}],"NS":["ns2.terraempresas.com.br","ns3.terraempresas.com.br"],"SOA":{"mname":"ns2.terraempresas.com.br","retry":3600,"rname":"sysadm.terraempresas.com.br","expire":2419200,"serial":2009052705,"minimum":86400,"refresh":21600},"TXT":["v=spf1 include:spf.terraempresas.com.br ~all"]} | 0.00000000305767 | 15,080,727 | 2026-05-26 | RDAP | 2009-05-27 | 2027-05-27 | 2026-05-18 | Tucows Domains Inc. | {"raw_response":{"links":[{"rel":"self","href":"https://rdap.verisign.com/com/v1/domain/TERRAOFERTAS.COM","type":"application/rdap+json","value":"https://rdap.verisign.com/com/v1/domain/TERRAOFERTAS.COM"},{"rel":"related","href":"https://opensrs.rdap.tucows.com/domain/TERRAOFERTAS.COM","type":"application/rdap+json","value":"https://opensrs.rdap.tucows.com/domain/TERRAOFERTAS.COM"}],"events":[{"eventDate":"2009-05-27T22:53:22Z","eventAction":"registration"},{"eventDate":"2027-05-27T22:53:22Z","eventAction":"expiration"},{"eventDate":"2026-05-18T05:01:33Z","eventAction":"last changed"},{"eventDate":"2026-05-26T02:25:36Z","eventAction":"last update of RDAP database"}],"handle":"1557216763_DOMAIN_COM-VRSN","status":["active"],"ldhName":"TERRAOFERTAS.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/terraofertas.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/terraofertas.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.tucows.com","type":"text/html","value":"https://opensrs.rdap.tucows.com/"}],"roles":["registrar"],"handle":"69","entities":[{"roles":["abuse"],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text",""],["tel",{"type":"voice"},"uri","tel:+1.4165350123"],["email",{},"text","domainabuse@tucows.com"]]],"objectClassName":"entity"}],"publicIds":[{"type":"IANA Registrar ID","identifier":"69"}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","Tucows Domains Inc."]]],"objectClassName":"entity"}],"secureDNS":{"delegationSigned":false},"nameservers":[{"ldhName":"NS2.TERRAEMPRESAS.COM.BR","objectClassName":"nameserver"},{"ldhName":"NS3.TERRAEMPRESAS.COM.BR","objectClassName":"nameserver"}],"objectClassName":"domain","rdapConformance":["rdap_level_0","icann_rdap_technical_implementation_guide_1","icann_rdap_response_profile_1"]}} | Domain is active |
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The Tail dataset
Every site we've detected as running Tail, with version, hosting, country, TLD and traffic rank.
Tail lives inside 2 datasets
Tail detection is part of Technologies (€159/mo) and All data (€599/mo). Buy either to filter the full 1-site list, or grab a free preview first.
About Tail
A product named with a common English word is a hard thing to count honestly, and the trouble starts well before the crawler runs.
Tail is recorded here as Customer data platform software from a vendor of the same name, sold under a Proprietary license. The word itself belongs to log tooling, to unrelated brands in unrelated industries, and to ordinary prose, so a fingerprint for a product like this cannot key on the name appearing somewhere in a page. What our detection actually matches is a specific script and the host it loads from, and the count that follows counts that match, not every company in the world using the word as a brand.
A hosted tag of this kind is fetched from the vendor's own infrastructure while the page loads, which means detection is direct rather than inferred. A tag either loads or it does not. Directness is what makes Customer data platform one of the more trustworthy layers of any technology dataset, and it is why tag detections are often the first column a researcher looks at when the question is what a company actually bought rather than what it announced.
As of October 2026 we see Tail on 1 site. A count in that range is a statement about our coverage and about the vendor's footprint at the same time, and nothing in the number separates the two. A small vendor with a regional customer base will produce a figure like this, and so will a larger vendor whose tag is loaded through a tag manager we cannot see into. The figure is best used as a lower bound with names attached.
The names are what a per domain lookup cannot produce. Checking a single site tells you what that site runs, which is useful only when you already knew which site to check. A researcher sizing a competitor, an acquirer testing whether a claimed customer base is visible from outside, or an agency hunting for stores that already pay for measurement outside the largest platforms all need the query run in reverse, from the technology to the full set of sites, exported once and filtered locally.
Frequently asked questions
How many websites use Tail?
webatla detects Tail on 1 website, refreshed daily, with its domain, DNS, WHOIS, IP, country and ranking.
Can I download the list of websites using Tail?
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 Tail?
Buy the technology dataset, then download the complete list of domains we detect using Tail, re-exported every day.
What else is in the Tail technology data?
Each row places Tail next to the other technology on the same site, plus DNS, WHOIS, IP, country and ranking.
Can I download just the sites using Tail, or the whole database?
Both. Every site running Tail 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 Tail?
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 Tail 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 Tail
Pick the dataset that covers what you need. Each one includes Tail and downloads as JSONL, rebuilt daily.
Full website tech stack per site: CMS, payments, analytics, frameworks.
Everything we have, in a single package. The full webatla universe.
Want to compare every dataset side by side? Visit the pricing page
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