claude.blog - robtex.com

claude.blog

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:9d97🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:2111🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.33.17Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.157.151🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSlaura.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3ab7🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlaura.ns.cloudflare.com
A2803:f800:50::6ca2:c0b7🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRlaura.ns.cloudflare.com
A2a06:98c1:50::ac40:20b7🇺🇸 Cloudflare2a06:98c1:50::/45
PTRlaura.ns.cloudflare.com
A108.162.192.183🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlaura.ns.cloudflare.com
A172.64.32.183🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlaura.ns.cloudflare.com
A173.245.58.183🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlaura.ns.cloudflare.com
NStom.ns.cloudflare.com
A2606:4700:58::adf5:3b93🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtom.ns.cloudflare.com
A2803:f800:50::6ca2:c193🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRtom.ns.cloudflare.com
A2a06:98c1:50::ac40:2193🇺🇸 Cloudflare2a06:98c1:50::/45
PTRtom.ns.cloudflare.com
A108.162.193.147🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtom.ns.cloudflare.com
A172.64.33.147🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtom.ns.cloudflare.com
A173.245.59.147🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtom.ns.cloudflare.com
MXin1-smtp.messagingengine.com ⭐
A103.168.172.216🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-01.messagingengine.com
A103.168.172.217🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-02.messagingengine.com
A103.168.172.218🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-03.messagingengine.com
A103.168.172.219🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-04.messagingengine.com
A103.168.172.220🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-05.messagingengine.com
A103.168.172.221🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-06.messagingengine.com
A103.168.172.222🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-07.messagingengine.com
A103.168.172.223🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-08.messagingengine.com
MXin2-smtp.messagingengine.com(20)
A202.12.124.216TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRstl-mx-01.messagingengine.com
A202.12.124.217TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRstl-mx-02.messagingengine.com
A202.12.124.218TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRstl-mx-03.messagingengine.com
A202.12.124.219TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRstl-mx-04.messagingengine.com
TXTv=spf1 include:spf.messagingengine.com ?all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.33.17, 172.67.157.151
IPv6 hints2606:4700:3033::ac43:9d97, 2606:4700:3037::6815:2111
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=225, name=cloudflare-ech.com
SOAlaura.ns.cloudflare.comdns@cloudflare.com serial=2409533101

blog

DNSSEC🔒 Signed (DS record present)
NSprd-fzp-07.corp.cira.ca ⭐
NSa.ns.nic.blog
NSb.ns.nic.blog
NSc.ns.nic.blog
NSd.ns.nic.blog
SOAprd-fzp-07.corp.cira.caadmin-dns@cira.ca serial=2608122210

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DNS History

8 records (8 active, 0 former)

NSlaura.ns.cloudflare.comtom.ns.cloudflare.comMXin1-smtp.messagingengine.comin2-smtp.messagingengine.comA104.21.33.17172.67.157.1512606:4700:3033::ac43:9d972606:4700:3037::6815:2111
●NSlaura.ns.cloudflare.com2026-08-12 → 2026-08-12 · 2 obs
● 2026-08-12 14:13:44
● 2026-08-12 22:36:16
●NStom.ns.cloudflare.com2026-08-12 → 2026-08-12 · 2 obs
● 2026-08-12 14:13:44
● 2026-08-12 22:36:16
●MXin1-smtp.messagingengine.com2026-08-12 → 2026-08-12 · 2 obs
● 2026-08-12 14:13:44
● 2026-08-12 22:36:16
●MXin2-smtp.messagingengine.com2026-08-12 → 2026-08-12 · 2 obs
● 2026-08-12 14:13:44
● 2026-08-12 22:36:16
●A104.21.33.172026-08-12 → 2026-08-12 · 2 obs
● 2026-08-12 14:13:44
● 2026-08-12 22:36:16
●A172.67.157.1512026-08-12 → 2026-08-12 · 2 obs
● 2026-08-12 14:13:44
● 2026-08-12 22:36:16
●A2606:4700:3033::ac43:9d972026-08-12 → 2026-08-12 · 2 obs
● 2026-08-12 14:13:44
● 2026-08-12 22:36:16
●A2606:4700:3037::6815:21112026-08-12 → 2026-08-12 · 2 obs
● 2026-08-12 14:13:44
● 2026-08-12 22:36:16

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
bloga.ns.nic.blog, c.ns.nic.blog, b.ns.nic.blog, d.ns.nic.blog8 records
claude.bloglaura.ns.cloudflare.com, tom.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.58.183

NS records: laura.ns.cloudflare.com, tom.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for claude.blog (unsigned zone)

⏱️ Timing

Total: 551ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.157.151, 104.21.33.17
AAAA22606:4700:3037::6815:2111, 2606:4700:3033::ac43:9d97
NS2laura.ns.cloudflare.com, tom.ns.cloudflare.com
MX2in1-smtp.messagingengine.com (pri: 10), in2-smtp.messagingengine.com (pri: 20)
TXT1v=spf1 include:spf.messagingengine.com ?
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1laura.ns.cloudflare.com dns.cloudflare.c

📌 Glue Records Collected

Total: 8

In-bailiwick: 8 (a.ns.nic.blog, b.ns.nic.blog, c.ns.nic.blog...)

Analysis

IP Addresses

claude.blog directs to four IP numbers, which are 104.21.33.17, 172.67.157.151, 2606:4700:3033::ac43:9d97 and 2606:4700:3037::6815:2111.

Two other host names, along with 8075110in.ltd.ac, 8039437in.ltd.ac and ltd.ac, also share IP numbers with claude.blog.

Name Servers

claude.blog uses two name servers for its delegation: laura.ns.cloudflare.com and tom.ns.cloudflare.com.

claude.blog shares its NS records with other domains, for example hadesvoip.cc, 8080.co, seekbra.com and two others.

At least some of claude.blog's name servers are shared with other domains, for example volyhahui.live, yonderpeak.life, deyeinverter.com and two more.

These name servers are often deployed together with the name servers kia.ns.cloudflare.com, augustus.ns.cloudflare.com, carter.ns.cloudflare.com and rodney.ns.cloudflare.com.

DNS names with 6 IP addresses:

Hostname laura.ns.cloudflare.com directs to 108.162.192.183, 172.64.32.183 and 173.245.58.183 along with 3 other IP addresses.

Hostname tom.ns.cloudflare.com directs to 108.162.193.147, 172.64.33.147 and 173.245.59.147 along with 3 other IP addresses.

Mail Servers

claude.blog is served by two mail servers, in1-smtp.messagingengine.com and in2-smtp.messagingengine.com.

Among the domains sharing a mail server setup with claude.blog are a-reid.com, bushel.co, 147.99.181.58.dynamic.max.com.pk and two others.

There is at least a partial MX overlap between claude.blog and other domains, including behling.org, build01.cinecert.com, lihua.me and two others.

DNS names with 8 IP addresses:

Hostname in1-smtp.messagingengine.com directs to 103.168.172.216, 103.168.172.217 and 103.168.172.218 along with 5 other IP addresses.

Host names that resolve to four IP numbers:

in2-smtp.messagingengine.com directs to 202.12.124.216, 202.12.124.217, 202.12.124.218 and 202.12.124.219.