mail.rtfm-lang.org - robtex.com

mail.rtfm-lang.org

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:536🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:8501🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.5.54Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.133.1🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.5.54, 172.67.133.1
IPv6 hints2606:4700:3030::6815:536, 2606:4700:3035::ac43:8501
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=28, name=cloudflare-ech.com

rtfm-lang.org

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:536🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:8501🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.5.54Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.133.1🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSjobs.ns.cloudflare.com ⭐
NSshubhi.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.5.54, 172.67.133.1
IPv6 hints2606:4700:3030::6815:536, 2606:4700:3035::ac43:8501
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=28, name=cloudflare-ech.com
SOAjobs.ns.cloudflare.comdns@cloudflare.com serial=2400135958

Previously MX for

rtfm-lang.org

Same first word

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DNS History

5 records (4 active, 1 former)

20162017201820192020202120222023202420252026A104.21.5.54172.67.133.12606:4700:3030::6815:5362606:4700:3035::ac43:8501195.74.38.202
●A104.21.5.542026-04-13 → 2026-04-13 · 2 obs
○ 2016-07-19 10:04:22
● 2026-04-13 12:17:32
●A172.67.133.12026-04-13 → 2026-04-13 · 2 obs
○ 2016-07-19 10:04:22
● 2026-04-13 12:17:32
○A195.74.38.2022015-05-17 → 2016-07-19 · 3 obs
● 2015-05-17 21:37:38
● 2016-07-19 10:04:22
○ 2026-04-13 12:17:32
●A2606:4700:3030::6815:5362026-04-13 → 2026-04-13 · 2 obs
○ 2016-07-19 10:04:22
● 2026-04-13 12:17:32
●A2606:4700:3035::ac43:85012026-04-13 → 2026-04-13 · 2 obs
○ 2016-07-19 10:04:22
● 2026-04-13 12:17:32

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org-
rtfm-lang.orgjobs.ns.cloudflare.com, shubhi.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.34.63

NS records: jobs.ns.cloudflare.com, shubhi.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rtfm-lang.org (unsigned zone)

⏱️ Timing

Total: 267ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.133.1, 104.21.5.54
AAAA22606:4700:3035::ac43:8501, 2606:4700:3030::6815:536
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

mail.rtfm-lang.org points to four IP numbers: 2606:4700:3030::6815:536, 2606:4700:3035::ac43:8501, 104.21.5.54 and 172.67.133.1.

Other host names including hnjtjxw.com, peterkeiza.com, pano.cool, newyorkhaircoloring.com and niscope.com share IP numbers with mail.rtfm-lang.org.