mailin2.learn2code.cz - dns.ninja

mailin2.learn2code.cz

DNSSEC⚠️ Not signed
A2606:4700:3036::6815:1df2🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:9601🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.29.242Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.150.1🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.29.242, 172.67.150.1
IPv6 hints2606:4700:3036::6815:1df2, 2606:4700:3036::ac43:9601
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=243, name=cloudflare-ech.com

learn2code.cz

DNSSEC⚠️ Not signed
A2606:4700:3036::6815:1df2🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:9601🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.29.242Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.150.1🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSlewis.ns.cloudflare.com ⭐
NSlina.ns.cloudflare.com
MXmx1.websupport.sk ⭐
MXmx2.websupport.sk(100)
TXTfacebook-domain-verification=e2awutx2ytzwfxmh42yd3qfun4y855
TXTspf2.0/pra a mx include:_sid.websupport.sk ?all
TXTv=spf1 a mx include:_spf.websupport.sk ?all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.29.242, 172.67.150.1
IPv6 hints2606:4700:3036::6815:1df2, 2606:4700:3036::ac43:9601
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=243, name=cloudflare-ech.com
SOAlewis.ns.cloudflare.comdns@cloudflare.com serial=2404860248

Previously MX for

learn2code.cz

DNS History

5 records (4 active, 1 former)

20162017201820192020202120222023202420252026A104.21.29.242172.67.150.12606:4700:3036::6815:1df22606:4700:3036::ac43:960137.9.169.113
●A104.21.29.2422026-05-10 → 2026-06-12 · 3 obs
○ 2016-07-27 10:50:26
● 2026-05-10 12:53:08
● 2026-06-12 23:34:06
●A172.67.150.12026-05-10 → 2026-06-12 · 3 obs
○ 2016-07-27 10:50:26
● 2026-05-10 12:53:08
● 2026-06-12 23:34:06
●A2606:4700:3036::6815:1df22026-05-10 → 2026-06-12 · 3 obs
○ 2016-07-27 10:50:26
● 2026-05-10 12:53:08
● 2026-06-12 23:34:06
●A2606:4700:3036::ac43:96012026-05-10 → 2026-06-12 · 3 obs
○ 2016-07-27 10:50:26
● 2026-05-10 12:53:08
● 2026-06-12 23:34:06
○A37.9.169.1132015-08-16 → 2016-07-27 · 4 obs
● 2015-08-16 16:48:52
● 2016-07-27 10:50:26
○ 2026-05-10 12:53:08
○ 2026-06-12 23:34:06

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cza.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz-
learn2code.czlina.ns.cloudflare.com, lewis.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.35.159

NS records: lina.ns.cloudflare.com, lewis.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for learn2code.cz (unsigned zone)

⏱️ Timing

Total: 920ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.29.242, 172.67.150.1
AAAA22606:4700:3036::6815:1df2, 2606:4700:3036::ac43:9601
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

mailin2.learn2code.cz points to four IP numbers: 104.21.29.242, 172.67.150.1, 2606:4700:3036::6815:1df2 and 2606:4700:3036::ac43:9601.

Among the host names that share IP numbers with mailin2.learn2code.cz are wordkeg.com, affordable-asbestos-removal-uk.co.uk, www.unost74.ru and two others.