mail.sdengineering.cz - robtex.com

mail.sdengineering.cz

DNSSEC⚠️ Not signed
A88.103.126.204🇨🇿 O2-CZECH-REPUBLIC88.100.0.0/14 CZ.CZNET
PTRemail.sdengineering.cz

sdengineering.cz

DNSSEC⚠️ Not signed
A2001:67c:e94:1:1:5bef:c90a:1Blindspot2001:67c:e94::/48 THINLINE-BlindSpot
A91.239.201.10🇨🇿 Blindspot91.239.200.0/23 THINLINE-BlindSpot
NSns1.thinline.cz ⭐
NSns2.thinline.cz
NSns3.cesky-hosting.eu
MXmail.sdengineering.cz ⭐
MXemail.sdengineering.cz(10)
TXTv=spf1 mx a:replikant4090.thinline.cz include:spf.spolehlive-servery.cz inclu...
SOAns1.thinline.czhostmaster@sdengineering.cz serial=20253703

MX for

sdengineering.cz

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DNS History

2 records (1 active, 1 former)

20162017201820192020202120222023202420252026A88.103.126.20484.242.109.61
○A84.242.109.612015-06-20 → 2016-07-11 · 4 obs
● 2015-06-20 12:23:30
● 2016-07-11 23:04:18
○ 2026-03-13 15:52:26
○ 2026-06-13 22:18:36
●A88.103.126.2042026-03-13 → 2026-06-13 · 3 obs
○ 2016-07-11 23:04:18
● 2026-03-13 15:52:26
● 2026-06-13 22:18:36

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cza.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz-
sdengineering.czns1.thinline.cz, ns2.thinline.cz, ns3.cesky-hosting.eu4 records

✅ Authoritative Response

Server:82.100.6.2

NS records: ns1.thinline.cz, ns2.thinline.cz, ns3.cesky-hosting.eu

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sdengineering.cz (unsigned zone)

⏱️ Timing

Total: 1064ms | Queries: -

📄 Records

TypeCountSample Data
A188.103.126.204

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.thinline.cz, ns1.thinline.cz, ns2.thinline.cz...)

Analysis

Mail Server Role

mail.sdengineering.cz is used as a mail server for sdengineering.cz.

email.sdengineering.cz and mail.sdengineering.cz tend to appear jointly as mail servers.

IP Addresses

mail.sdengineering.cz points to a single IP number: 88.103.126.204.

Other host names share IP numbers with mail.sdengineering.cz; email.sdengineering.cz is one such example.