mail.4dirschool.ru - robtex.com

mail.4dirschool.ru

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:5bbd🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:b25a🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.91.189Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.178.90🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.91.189, 172.67.178.90
IPv6 hints2606:4700:3030::6815:5bbd, 2606:4700:3037::ac43:b25a
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=13, name=cloudflare-ech.com

4dirschool.ru

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:5bbd🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:b25a🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.91.189Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.178.90🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSadel.ns.cloudflare.com ⭐
NSvalentin.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.91.189, 172.67.178.90
IPv6 hints2606:4700:3030::6815:5bbd, 2606:4700:3037::ac43:b25a
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=13, name=cloudflare-ech.com
SOAadel.ns.cloudflare.comdns@cloudflare.com serial=2399852130

Previously MX for

4dirschool.ru

Same first word

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DNS History

6 records (4 active, 2 former)

20162017201820192020202120222023202420252026A104.21.91.189172.67.178.902606:4700:3030::6815:5bbd2606:4700:3037::ac43:b25a141.8.192.108141.8.194.236
●A104.21.91.1892026-04-29 → 2026-04-29 · 2 obs
○ 2016-11-20 02:48:58
● 2026-04-29 19:34:58
○A141.8.192.1082015-05-27 → 2016-01-03 · 4 obs
● 2015-05-27 12:18:22
● 2016-01-03 00:05:40
○ 2016-04-04 12:05:38
○ 2026-04-29 19:34:58
○A141.8.194.2362016-04-04 → 2016-11-20 · 4 obs
○ 2016-01-03 00:05:40
● 2016-04-04 12:05:38
● 2016-11-20 02:48:58
○ 2026-04-29 19:34:58
●A172.67.178.902026-04-29 → 2026-04-29 · 2 obs
○ 2016-11-20 02:48:58
● 2026-04-29 19:34:58
●A2606:4700:3030::6815:5bbd2026-04-29 → 2026-04-29 · 2 obs
○ 2016-11-20 02:48:58
● 2026-04-29 19:34:58
●A2606:4700:3037::ac43:b25a2026-04-29 → 2026-04-29 · 2 obs
○ 2016-11-20 02:48:58
● 2026-04-29 19:34:58

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
rua.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net, e.dns.ripn.net...-
4dirschool.ruadel.ns.cloudflare.com, valentin.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.192.55

NS records: adel.ns.cloudflare.com, valentin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 4dirschool.ru (unsigned zone)

⏱️ Timing

Total: 661ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.91.189, 172.67.178.90
AAAA22606:4700:3030::6815:5bbd, 2606:4700:3037::ac43:b25a
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

mail.4dirschool.ru maps to four IP numbers: 2606:4700:3030::6815:5bbd, 2606:4700:3037::ac43:b25a, 104.21.91.189 and 172.67.178.90.

Other host names, for instance anpap.org.br, bagelier.com, elephantasticvegan.com, czhongfu.com and karokab.go.id share IP numbers with mail.4dirschool.ru.