Hosting check
Who hosts claude.ai?
claude.ai is behind Cloudflare, which hides the origin host. DNS by Cloudflare.
Checked 16 Oct 2026 at 02:40 UTC
Server
Anycast: nearest of many locations
160.79.104.10
Anthropic, PBC · AS399358
🇺🇸San Francisco, United States
Checks
6 of 7 checks pass
Warnings are worth a look, but nothing is broken.
Hosting provider
Low confidence
Cloudflare
CDNOrigin host hidden. A CDN answers for this site and hides the origin server, so the real host is not visible from outside.
- CDN
Cloudflarecloudflare.com
Answers every request and forwards it to an origin server it does not reveal. The IP address below belongs to the CDN.
- NetworkAnthropic, PBCAS399358 · 160.79.104.0/23
Owns the IP address that answered our lookup.
How we know
3 signals- NetworkAS399358Anthropic, PBC
- Headercf-ray: a4b3b242cf786865-HELCloudflare
- Headerserver: cloudflareCloudflare
IP & network
160.79.104.10 · San Francisco
- IP address
- 160.79.104.10
- Network
- Anthropic, PBCAS399358
- Route
- 160.79.104.0/23
- Location
- San Francisco, California, United StatesAnycast: where our lookup landed
- Timezone
- America/Los_Angeles
This is an anycast address: many locations announce it, and each visitor reaches the nearest one. The location above is only where our lookup landed.
Coordinates, postal code and company
Geolocation describes the network's registered location, not a street address. For a data center IP the postal code and coordinates are approximate.
- Coordinates
- 37.7915,-122.4018
- Postal code
- 94104
- Country code
- US
DNS records
29 records in 6 types
- A
1 record
IPv4 addresses the name points to
- 160.79.104.10
- AAAA
1 record
IPv6 addresses the name points to
- 2607:6bc0::10
- NS
2 records
Nameservers that answer for the zone
- isla.ns.cloudflare.com
- randy.ns.cloudflare.com
- CAA
18 records
Certificate authorities allowed to issue certificates
- 0 issue "amazon.com"
- 0 issue "amazonaws.com"
- 0 issue "amazontrust.com"
- 0 issue "awstrust.com"
- 0 issue "comodoca.com"
- 0 issue "digicert.com; cansignhttpexchanges=yes"
- 0 issue "letsencrypt.org"
- 0 issue "pki.goog; cansignhttpexchanges=yes"
- 0 issue "ssl.com"
- 0 issuewild "amazon.com"
- 0 issuewild "amazonaws.com"
- 0 issuewild "amazontrust.com"
- 0 issuewild "awstrust.com"
- 0 issuewild "comodoca.com"
- 0 issuewild "digicert.com; cansignhttpexchanges=yes"
- 0 issuewild "letsencrypt.org"
- 0 issuewild "pki.goog; cansignhttpexchanges=yes"
- 0 issuewild "ssl.com"
- SOA
1 record
Zone authority: primary nameserver, admin mailbox and timers
- isla.ns.cloudflare.com dns.cloudflare.com 2417566492 10000 2400 604800 1800
- TXT
6 records
1 SPF policy, 4 ownership proofs, 1 other
- _4h91g65hky8g6rbfx22rpfu4pprn1v3
- google-site-verification=NISbSmcIQumvbPjLbYAhRmzrx1LSAhRMH6XVaKTWxe0
- google-site-verification=YPYhXirYOvYGGQtAypqom1k-1KMXKHeWbxKgw60bDfo
- google-site-verification=iDyYpE6uHVggWrWzK-MEosRSp7XUE7wqBLGX0Ua71Pc
SSL certificate
- Status
- Valid certificateTrusted by browsers and covers claude.ai. Expires in 54 days.
- Issuer
- Let's Encrypt (YE2)
- Common name
- claude.ai
- Protocol
- TLSv1.3
- Valid from
- September 10, 2026 at 02:25 PM UTC
- Valid to
- December 9, 2026 at 02:25 PM UTCExpires in 54 days
Covered hostnames
3 names- claude.ai
- staging.claude.ai
- www.claude.ai
Certificate chain
5 certificatesclaude.ai
Server certificate · Issued by Let's Encrypt (YE2) · Valid to 09 Dec 2026
Let's Encrypt (YE2)
Intermediate · Issued by ISRG (Root YE) · Valid to 02 Sept 2028
ISRG (Root YE)
Intermediate · Issued by Internet Security Research Group (ISRG Root X2) · Valid to 02 Sept 2032
Internet Security Research Group (ISRG Root X2)
Intermediate · Issued by Internet Security Research Group (ISRG Root X1) · Valid to 02 Sept 2032
Internet Security Research Group (ISRG Root X1)
Root · Valid to 04 Jun 2035
Serial number and fingerprints
- Serial number
- 06BB101435CB643915521BAD87747328BAC2
- SHA-256
- 7D:7A:F3:41:C9:EF:8F:28:9C:55:D5:86:97:52:38:FE:97:B3:13:A3:A2:EF:FE:A7:14:50:8B:5C:3A:B1:F2:70
- SHA-1
- B8:17:E6:F7:00:70:6B:CE:80:13:9E:3A:63:C3:48:25:21:B0:07:4D
Domain registration
Registered 04 Aug 2018
Expires in 1,023 daysRegistration data for claude.ai, from the registry's RDAP or WHOIS service.
- Registrar
- MarkMonitor Inc.IANA ID 292
- Registrant
- Anthropic PBCUS
- Registered
- 04 Aug 20188 years, 2 months old
- Expires
- 04 Aug 2029Expires in 1,023 days
- Last updated
- 12 Aug 2026
- DNSSEC
- Unsigned
- Abuse email
- abusecomplaints@markmonitor.com
- Abuse phone
- +1.2083895740
Nameservers
2 nameservers- isla.ns.cloudflare.com
- randy.ns.cloudflare.com
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