Rank #558Updated November 10, 2026
claude.ai
claude.ai is registered with MarkMonitor Inc. since August 4, 2018 (8.3 years). The registration expires on August 4, 2029. Its email security grade is A. Its SSL certificate is issued by Let's Encrypt and is valid for 88 more days.
- Domain age
- 8.3 yrs
- Technologies
- —
- Email security
- A
- SSL days left
- 88
Registration
| Registrar | MarkMonitor Inc. |
|---|---|
| IANA ID | 292 |
| Registered | August 4, 2018 |
| Expires | August 4, 2029 |
| Updated | August 12, 2026 |
| Status | client delete prohibited, client transfer prohibited, client update prohibited |
| Name servers | isla.ns.cloudflare.com, randy.ns.cloudflare.com |
| DNSSEC | Not signed |
| Registrant | Anthropic PBC, US |
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 160.79.104.10 | 172 |
| NS | isla.ns.cloudflare.com | 86307 |
| NS | randy.ns.cloudflare.com | 86307 |
| CAA | issue 0 amazon.com | 300 |
| CAA | issue 0 amazonaws.com | 300 |
| CAA | issue 0 amazontrust.com | 300 |
| CAA | issue 0 awstrust.com | 300 |
| CAA | issue 0 comodoca.com | 300 |
| CAA | issue 0 digicert.com; cansignhttpexchanges=yes | 300 |
| CAA | issue 0 letsencrypt.org | 300 |
| CAA | issue 0 pki.goog; cansignhttpexchanges=yes | 300 |
| CAA | issue 0 ssl.com | 300 |
| CAA | issuewild 0 amazon.com | 300 |
| CAA | issuewild 0 amazonaws.com | 300 |
| CAA | issuewild 0 amazontrust.com | 300 |
| TXT | _4h91g65hky8g6rbfx22rpfu4pprn1v3 | 300 |
| TXT | google-site-verification=NISbSmcIQumvbPjLbYAhRmzrx1LSAhRMH6XVaKTWxe0 | 300 |
| TXT | google-site-verification=YPYhXirYOvYGGQtAypqom1k-1KMXKHeWbxKgw60bDfo | 300 |
| TXT | google-site-verification=iDyYpE6uHVggWrWzK-MEosRSp7XUE7wqBLGX0Ua71Pc | 300 |
| TXT | google-site-verification=vd3zHrSm-qrk36v4haRXBGrfAOM-O8b8pDiaPdI_s9Q | 300 |
| TXT | v=spf1 -all | 300 |
| AAAA | 2607:6bc0::10 | 290 |
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, YE2, Let's Encrypt |
| Expires | February 6, 2027 |
| Days remaining | 88 |
| Protocol | TLSv1.3 |
| Names | claude.ai, staging.claude.ai, www.claude.ai |
Email security
AScore 97/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
- warnNo MX records: this domain cannot receive email.
- goodSPF record found.
- goodSPF ends with -all: servers you have not listed are rejected (hard fail).
- goodDMARC policy is reject: mail that fails authentication is blocked.
- goodDMARC aggregate reports are sent to mailto:[email protected].
- goodSPF says this domain sends no email, so DKIM signing is not needed.
About claude.ai
Who is the registrar of claude.ai?
claude.ai is registered with MarkMonitor Inc. (IANA ID 292).
When does claude.ai expire?
The current registration of claude.ai expires on August 4, 2029. It was first registered on August 4, 2018.
Does claude.ai protect its email with SPF and DMARC?
claude.ai scores 97/100 (grade A) for email security. No MX records: this domain cannot receive email. SPF record found.
What are the name servers of claude.ai?
claude.ai uses isla.ns.cloudflare.com, randy.ns.cloudflare.com.