claude.ai

Stored result from 9 hours ago · Re-check for a live scanRe-check: 3 of 3 remaining this 15 minutes2026-08-17 02:03:40 UTCRaw JSON

claude.ai scores 97 out of 100. Nothing is broken, but 2 checks are flagged as fragile or non-standard.

The warnings cover nameservers are independent of each other and MX records.

Registrar

MarkMonitor Inc.

Confident

RDAP record at the registry
IANA registrar ID 292

DNS

Cloudflare

Confident

nameserver isla.ns.cloudflare.com
nameserver randy.ns.cloudflare.com

Not identified

Where mail for this domain is delivered. We could not match this against a known provider — which usually means self-hosted, or a provider we do not have a fingerprint for yet.

Hosting

Cloudflare

Confident

HTTP header server: cloudflare
network operator CLOUDFLARENET - Cloudflare, Inc., US

97/ 100

2warnings
30passed
7notes

Registration

Registrant contact details are redacted for almost every domain under GDPR. The registrar and its abuse contact below are the fields that actually get you to a human.

Registrar: MarkMonitor Inc.
Abuse contact: [email protected]
Abuse phone: tel:+1.2083895740
Registered: 2018-08-04
Expires: 2029-08-04
Last changed: 2026-08-12
IANA registrar ID: 292

Nameservers at the registry

isla.ns.cloudflare.com
randy.ns.cloudflare.com

Status codes

client delete prohibitedDeletion is locked at your registrar, so the domain cannot be accidentally (or maliciously) deleted.
client transfer prohibitedTransfer lock is on — you must unlock this at your registrar before the domain can move to another one. This is usually a good thing: it is what stops someone else transferring your domain away.
client update prohibitedUpdates are locked at your registrar — nameserver and contact changes will be refused until you remove the lock in your registrar account.

Network the website sits on

Address: 160.79.104.10
Netblock: 160.79.104.0/21
Owner: Anthropic, PBC
Network name: AP-2440
Abuse contact: [email protected]

Scanned in 1.1s using 149 DNS queries. This report is public for anyone who has the link — see About for what that means and how to opt out.

Who runs what

DelegationWhat the registry has on file6 checks

NameserversHow each server actually behaves1 warning

Registration

SOAZone metadata and timers5 checks

Mail deliveryMX records and mail servers1 warning

Mail authenticationSPF, DKIM, DMARC and transport security7 checks

Web & TLSAddress records and certificates5 checks

ReputationBlacklist status1 checks

RegistrationRegistrar records3 checks