mx.leading-learners.org - robtex.com

mx.leading-learners.org

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:571e🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3032::ac43:8c15🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.87.30Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.140.21🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.87.30, 172.67.140.21
IPv6 hints2606:4700:3031::6815:571e, 2606:4700:3032::ac43:8c15
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=121, name=cloudflare-ech.com

leading-learners.org

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:571e🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3032::ac43:8c15🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.87.30Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.140.21🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSgalilea.ns.cloudflare.com ⭐
NSmorgan.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.87.30, 172.67.140.21
IPv6 hints2606:4700:3031::6815:571e, 2606:4700:3032::ac43:8c15
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=121, name=cloudflare-ech.com
SOAgalilea.ns.cloudflare.comdns@cloudflare.com serial=2400030475

Previously MX for

leading-learners.org

Same first word

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DNS History

6 records (4 active, 2 former)

20162017201820192020202120222023202420252026A104.21.87.30172.67.140.212606:4700:3031::6815:571e2606:4700:3032::ac43:8c1566.96.140.9666.96.140.97
●A104.21.87.302026-03-29 → 2026-04-23 · 3 obs
○ 2016-08-13 03:38:58
● 2026-03-29 13:36:36
● 2026-04-23 17:08:22
●A172.67.140.212026-03-29 → 2026-04-23 · 3 obs
○ 2016-08-13 03:38:58
● 2026-03-29 13:36:36
● 2026-04-23 17:08:22
●A2606:4700:3031::6815:571e2026-03-29 → 2026-04-23 · 3 obs
○ 2016-08-13 03:38:58
● 2026-03-29 13:36:36
● 2026-04-23 17:08:22
●A2606:4700:3032::ac43:8c152026-03-29 → 2026-04-23 · 3 obs
○ 2016-08-13 03:38:58
● 2026-03-29 13:36:36
● 2026-04-23 17:08:22
○A66.96.140.962015-08-17 → 2016-08-13 · 4 obs
● 2015-08-17 05:15:38
● 2016-08-13 03:38:58
○ 2026-03-29 13:36:36
○ 2026-04-23 17:08:22
○A66.96.140.972015-08-17 → 2016-08-13 · 4 obs
● 2015-08-17 05:15:38
● 2016-08-13 03:38:58
○ 2026-03-29 13:36:36
○ 2026-04-23 17:08:22

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org-
leading-learners.orggalilea.ns.cloudflare.com, morgan.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.195.132

NS records: galilea.ns.cloudflare.com, morgan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for leading-learners.org (unsigned zone)

⏱️ Timing

Total: 435ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.140.21, 104.21.87.30
AAAA22606:4700:3031::6815:571e, 2606:4700:3032::ac43:8c15
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

mx.leading-learners.org resolves to four IP numbers: 2606:4700:3031::6815:571e, 2606:4700:3032::ac43:8c15, 104.21.87.30 and 172.67.140.21.

Other host names such as www.wlws-whatsapp.com, mail.michaelduch.no, kmz-k.com, elgzal.com and startupreport.com share IPs with mx.leading-learners.org.