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Who hosts claude.ai?
Answer
claude.ai uses the Anthropic, PBC network; the hosting company is unconfirmed.
Checked 2 hours ago from Cloudflare ZRH in 232 ms. This is a saved result.
What needs attention
Prioritized observations from this check. Review changes with whoever manages the website.
- Good to know
Only the network operator is identified
The visible IP network is known, but no hosting-specific evidence confirms the company or reseller serving the site.
Next step: Use the evidence as a network attribution and verify the hosting provider with the website owner if needed.
- Good to know
Bot protection limited the website check
Cloudflare bot challenge was returned instead of the ordinary website page.
Next step: Verify the site in a browser; technology and header results may describe the protection page.
Evidence by layer
The company operating a network and the company selling the hosting can be different.
Network operators
ANTHROPIC - Anthropic, PBC, US
Network ownership alone does not confirm the retail hosting provider.
How we know
- 160.79.104.10 belongs to AS399358 (ANTHROPIC - Anthropic, PBC, US)
- 2607:6bc0::10 belongs to AS399358 (ANTHROPIC - Anthropic, PBC, US)
Servers
The addresses the name points to and the networks that own them.
- 160.79.104.10Anthropic, PBC
- 2607:6bc0::10Anthropic, PBC
Reachable over IPv6.
Website
What the site answered when we visited its home page.
The site showed a bot check (Cloudflare bot challenge), so we could only read its headers.
- Status
- 403 Forbidden
- Address
- https://claude.ai/login
- Page title
- Just a moment...
- HTTPS
- Yes
- HTTP/3
- Supported
- Response time
- 6 ms from Cloudflare ZRH
Redirects (1)
- 302https://claude.ai/
- 403https://claude.ai/login
Security headers
- Strict-Transport-Security
- Content-Security-Policy (too weak)
- Clickjacking protection
- X-Content-Type-Options
- Referrer-Policy
- Permissions-Policy (too weak)
DNS
Who answers for the domain name, and its records.
- DNS provider
- Cloudflare
- Name servers
- isla.ns.cloudflare.com
randy.ns.cloudflare.com - Zone
- claude.ai
- DNSSEC
- Not signed
- Certificates
- issue amazon.com
issue amazonaws.com
issue amazontrust.com
issue awstrust.com
issue comodoca.com
issue digicert.com; cansignhttpexchanges=yes
issue letsencrypt.org
issue pki.goog; cansignhttpexchanges=yes
issue ssl.com
issuewild amazon.com
issuewild amazonaws.com
issuewild amazontrust.com
issuewild awstrust.com
issuewild comodoca.com
issuewild digicert.com; cansignhttpexchanges=yes
issuewild letsencrypt.org
issuewild pki.goog; cansignhttpexchanges=yes
issuewild ssl.com
All DNS records (28)
| Type | Name | Value | TTL |
|---|---|---|---|
| A | claude.ai | 160.79.104.10 | 10 |
| AAAA | claude.ai | 2607:6bc0::10 | 261 |
| NS | claude.ai | isla.ns.cloudflare.com | 80140 |
| NS | claude.ai | randy.ns.cloudflare.com | 80140 |
| TXT | claude.ai | _4h91g65hky8g6rbfx22rpfu4pprn1v3 | 300 |
| TXT | claude.ai | google-site-verification=NISbSmcIQumvbPjLbYAhRmzrx1LSAhRMH6XVaKTWxe0 | 300 |
| TXT | claude.ai | google-site-verification=YPYhXirYOvYGGQtAypqom1k-1KMXKHeWbxKgw60bDfo | 300 |
| TXT | claude.ai | google-site-verification=iDyYpE6uHVggWrWzK-MEosRSp7XUE7wqBLGX0Ua71Pc | 300 |
| TXT | claude.ai | google-site-verification=vd3zHrSm-qrk36v4haRXBGrfAOM-O8b8pDiaPdI_s9Q | 300 |
| TXT | claude.ai | v=spf1 -all | 300 |
| CAA | claude.ai | 0 issue "amazon.com" | 300 |
| CAA | claude.ai | 0 issue "amazonaws.com" | 300 |
| CAA | claude.ai | 0 issue "amazontrust.com" | 300 |
| CAA | claude.ai | 0 issue "awstrust.com" | 300 |
| CAA | claude.ai | 0 issue "comodoca.com" | 300 |
| CAA | claude.ai | 0 issue "digicert.com; cansignhttpexchanges=yes" | 300 |
| CAA | claude.ai | 0 issue "letsencrypt.org" | 300 |
| CAA | claude.ai | 0 issue "pki.goog; cansignhttpexchanges=yes" | 300 |
| CAA | claude.ai | 0 issue "ssl.com" | 300 |
| CAA | claude.ai | 0 issuewild "amazon.com" | 300 |
| CAA | claude.ai | 0 issuewild "amazonaws.com" | 300 |
| CAA | claude.ai | 0 issuewild "amazontrust.com" | 300 |
| CAA | claude.ai | 0 issuewild "awstrust.com" | 300 |
| CAA | claude.ai | 0 issuewild "comodoca.com" | 300 |
| CAA | claude.ai | 0 issuewild "digicert.com; cansignhttpexchanges=yes" | 300 |
| CAA | claude.ai | 0 issuewild "letsencrypt.org" | 300 |
| CAA | claude.ai | 0 issuewild "pki.goog; cansignhttpexchanges=yes" | 300 |
| CAA | claude.ai | 0 issuewild "ssl.com" | 300 |
Well protected against spoofing: SPF plus an enforced DMARC policy.
- Mailbox provider
- None
- Allowed senders
- Only servers listed in the SPF record
- SPF
- Mail from any other server is rejected.
- DMARC
- Spoofed mail is rejected.
- MTA-STS
- Not enabled
SPF and DMARC records
v=spf1 -all
v=DMARC1; p=reject; rua=mailto:77e00ffe8c9a4e58815efcec52c89399@dmarc-reports.cloudflare.net; fo=1
Domain registration
- Registrar
- MarkMonitor Inc.
- Registered
- 4 Aug 2018 (8 years ago)
- Paid until
- 4 Aug 2029 (in 1013 days)
- Last changed
- 12 Aug 2026
- Status
- Deletion lock (registrar)Transfer lock (registrar)Update lock (registrar)
- DNSSEC at registry
- No
- Source
- rdap.identitydigital.services
Connected services
Verification records in DNS show the domain is linked to these accounts.
Google Search Console
Observed changes
A compact record of what changed between public checks. Rechecks happen only when someone requests them.
History starts with saved public observations. No earlier changes are inferred.
Something look wrong? Report an incorrect result
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