Infrastructure - https://claude.ai BeaverCheck Audit

B

TLS Certificate Expiry & Recommendations

54 days until leaf cert expires — 3 issues to address

REVIEW

Certificate validity

54

days left

0d 30d 60d 90d+

Recommended actions

Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
Enable DNSSEC on your domain for DNS spoofing protection
Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy

B

CDN & Delivery

Cloudflare

REVIEW

Cloudflare

Site is served via Cloudflare CDN (edge: SIN)

Got: cf-ray: 9eff173b7f2c2ae6-SIN

CDN Detected: Cloudflare

Provider Cloudflare Evidence cf-ray: 9eff173b7f2c2ae6-SIN

A+

DNS Records

1 A records, 10 ms lookup

PASS

1 A records, 10 ms lookup

Resolves to 1 IPv4 address(es)

Got: 160.79.104.10

Single A record — no DNS redundancy

Multiple A records provide failover if one server goes down.

Has 1 IPv6 (AAAA) record(s)

Got: 2607:6bc0::10

2 nameserver(s) configured

Got: isla.ns.cloudflare.com, randy.ns.cloudflare.com

No MX records — email not configured via DNS

CAA records not checked

CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.

SPF record present in TXT

DNS resolution time: 10 ms

Got: 10 ms

A	160.79.104.10
AAAA	2607:6bc0::10
CNAME	—
NS	isla.ns.cloudflare.com, randy.ns.cloudflare.com
MX	—
TXT	_4h91g65hky8g6rbfx22rpfu4pprn1v3 google-site-verification=NISbSmcIQumvbPjLbYAhRmzrx1LSAhRMH6XVaKTWxe0 google-site-verification=YPYhXirYOvYGGQtAypqom1k-1KMXKHeWbxKgw60bDfo google-site-verification=iDyYpE6uHVggWrWzK-MEosRSp7XUE7wqBLGX0Ua71Pc SPF v=spf1 -all
CAA	Lookup not available with standard resolver

Resolved in 10 ms

Multiple A records provide failover if one server goes down.

Why this matters

Single A record means a single point of failure — if that IP goes down, your site is unreachable until DNS TTL expires.

Learn more ▾

Add multiple A records for round-robin failover, or use a managed DNS provider with health-checked failover (Route 53, Cloudflare, NS1). Short TTL (60-300s) lets clients recover faster on outages.

Source: SRE practice / DNS architecture

CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.

Why this matters

Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.

A

Redirect Chain

1 redirect(s), 47 ms total

PASS

1 redirect(s), 47 ms total

Single redirect

Got: https://claude.ai → https://claude.ai/login (302)

Uses 302 (temporary) redirect

If permanent, use 301 instead.

Got: https://claude.ai

https://claude.ai

26 ms · HTTP/1.1

302

https://claude.ai/login

21 ms · HTTP/1.1 FINAL

#	URL	Status	Time	Protocol	Server
1	https://claude.ai	302	26 ms	HTTP/1.1	cloudflare
2	https://claude.ai/login	200	21 ms	HTTP/1.1	cloudflare

See the visual redirect chain in the HTTP Probe tab →

If permanent, use 301 instead.

Why this matters

302 (Found) is for genuinely temporary redirects — if this redirect is permanent, switch to 301 to preserve SEO equity.

Learn more ▾

Search engines treat 302 as temporary, keeping the original URL indexed and not transferring full link equity to the destination. Use 301 (Moved Permanently) for permanent redirects (HTTP→HTTPS, www-vs-non-www, URL restructures).

Source: Google Search Central

A+

IPv6 Readiness

IPv6 reachable (1 ms)

PASS

IPv6 reachable (1 ms)

IPv6 is configured and reachable at 2607:6bc0::10

Got: 1 ms connect

IPv6 Ready

AAAA Records 2607:6bc0::10 Connection Reachable (1 ms)

A+

Crawlability

robots.txt present, sitemap with 11 URLs

PASS

robots.txt present, sitemap with 11 URLs

robots.txt is present

Got: 390 bytes

sitemap.xml is present

sitemap.xml is valid XML

sitemap.xml contains 11 entries

Sitemap index with 11 child sitemaps

robots.txt references sitemap

robots.txt 200 OK

Size 390 B Sitemaps referenced 1 User-agents ia_archiver, GPTBot, OAI-SearchBot, ChatGPT-User, * Blocking No — crawling allowed

User-Agent: ia_archiver
Allow: /$
Allow: /login
Disallow: /

User-Agent: GPTBot
User-Agent: OAI-SearchBot
User-Agent: ChatGPT-User
Disallow: /

User-Agent: *
Disallow: /new?*
Disallow: /chat/*
Disallow: /share/*
Disallow: /magic-link*
Disallow: /api/*
Disallow: /onboarding*
Disallow: /upgrade*
Disallow: /lti/*
Disallow: /settings*
Disallow: /task*

Sitemap: https://claude.ai/sitemap.xml

sitemap.xml 200 OK

Type Sitemap Index URLs 11 entries Valid XML Yes

Child Sitemaps:

A+

URL Variants

www/non-www, trailing slash, HTTP→HTTPS

PASS

www/non-www, trailing slash, HTTP→HTTPS

www/non-www redirect configured correctly (preferred: non-www)

HTTP correctly 301-redirects to HTTPS

www / non-www

301https://www.claude.ai/

200https://claude.ai/

Preferred variant: non-www

HTTP → HTTPS

301http://claude.ai/ → https://claude.ai/

Consistent

A+

Domain Intelligence

claude.ai — via MarkMonitor Inc., 7 years, 9 months old

PASS

claude.ai — via MarkMonitor Inc., 7 years, 9 months old

Domain registered until Aug 4, 2029 (3 years, 4 months remaining)

DNSSEC is not enabled

DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.

Registrar: MarkMonitor Inc.

Registrar lock is NOT enabled

The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.

Domain expiry

1115 days

August 4, 2029

SSL certificate

54 days

Issued by Let's Encrypt

Domain age

7 years, 9 months

Registered August 4, 2018

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Unknown

2607:6bc0::10

Registrar

MarkMonitor Inc.

Unlocked 2 NS records

Expiry timeline

Today

+1 year

Domain expiry SSL expiry Danger zone (≤30 days)

Recommended actions

Enable DNSSEC to protect visitors from DNS spoofing
Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers

Registrar MarkMonitor Inc.

Created August 4, 2018 (7 years, 9 months ago)

Expires August 4, 2029 (3 years, 4 months)

Last Updated January 17, 2025

Name Servers isla.ns.cloudflare.com, randy.ns.cloudflare.com

DNSSEC Not enabled

Registrant Domain Administrator

Hosting

IP Address 2607:6bc0::10

Data source: rdap (0.3s)

DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.

Why this matters

Without DNSSEC, an attacker who can poison your DNS can hijack your domain — and SSL certs alone don't stop them.

Learn more ▾

DNSSEC adds cryptographic signatures to DNS records, preventing forged responses from poisoning resolver caches. Without it, an attacker who controls the network path can redirect your domain to a malicious server before any HTTPS handshake happens. Most modern registrars (Cloudflare, Google Domains, Route 53) enable it with one toggle.

Source: ICANN / RFC 4033

The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.

Why this matters

Without registrar lock, an attacker who phishes your registrar credentials can transfer the domain in minutes — total brand hijack.

Learn more ▾

Registrar lock (clientTransferProhibited, clientUpdateProhibited, clientDeleteProhibited) requires extra verification before any transfer/update/delete. Every major registrar offers it free. Combined with 2FA on your registrar account, it's the strongest defense against domain hijacking.

Source: ICANN / domain-security best practice

A+

HTTP Probe Timing

Total 21 ms — DNS, TCP, TLS, TTFB, content transfer breakdown

PASS

DNS Lookup

2 ms

TCP Connect

1 ms

TLS Handshake

6 ms

Time to First Byte

22 ms

Total Time

22 ms

Connection waterfall

DNS Lookup 2 ms TCP Connect 1 ms TLS Handshake 6 ms Server Processing 13 ms Content Transfer 0 ms