sdengineering.cz - robtex.com
sdengineering.cz
cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.ns.nic.cz ⭐ | ||||||
| NS | b.ns.nic.cz | ||||||
| NS | c.ns.nic.cz | ||||||
| NS | d.ns.nic.cz | ||||||
| SOA | a.ns.nic.czhostmaster@nic.cz serial=1781273835 | ||||||
Subdomains
mail.sdengineering.cz |
Same first word
sdengineering.com |
sdengineering.ca |
sdengineering.cz |
sdengineering.it |
sdengineering.co.uk |
sdengineering.net |
Similar names
dsengineering.in |
dsengineering.co.uk |
dsengineering.com |
engineeringds.com.mx |
dsengineering.ca |
dsengineering.de |
greenindesign.com |
dsengineering.org |
dsengineering.net |
DNS History
11 records (7 active, 4 former)
○NSns.forpsi.cz2015-08-17 → 2019-04-06 · 4 obs
● 2019-04-06 07:05:34
○ 2026-03-01 07:30:20
○ 2026-06-12 14:51:46
○NSns.forpsi.it2015-08-17 → 2019-04-06 · 4 obs
● 2019-04-06 07:05:34
○ 2026-03-01 07:30:20
○ 2026-06-12 14:51:46
○NSns.forpsi.net2015-08-17 → 2019-04-06 · 4 obs
● 2019-04-06 07:05:34
○ 2026-03-01 07:30:20
○ 2026-06-12 14:51:46
●NSns1.thinline.cz2026-03-01 → 2026-06-12 · 3 obs
● 2026-03-01 07:30:20
● 2026-06-12 14:51:46
●NSns2.thinline.cz2026-03-01 → 2026-06-12 · 3 obs
● 2026-03-01 07:30:20
● 2026-06-12 14:51:46
●NSns3.cesky-hosting.eu2026-03-01 → 2026-06-12 · 3 obs
● 2026-03-01 07:30:20
● 2026-06-12 14:51:46
●MXemail.sdengineering.cz2015-08-17 → 2026-06-12 · 2 obs
● 2026-06-12 14:51:46
●MXmail.sdengineering.cz2015-08-17 → 2026-06-12 · 2 obs
● 2026-06-12 14:51:46
●A2001:67c:e94:1:1:5bef:c90a:12026-03-01 → 2026-06-12 · 3 obs
● 2026-03-01 07:30:20
● 2026-06-12 14:51:46
○A81.2.225.1602015-08-17 → 2019-04-06 · 4 obs
● 2019-04-06 07:05:34
○ 2026-03-01 07:30:20
○ 2026-06-12 14:51:46
●A91.239.201.102026-03-01 → 2026-06-12 · 3 obs
● 2026-03-01 07:30:20
● 2026-06-12 14:51:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | 8 records |
| sdengineering.cz | ns1.thinline.cz, ns2.thinline.cz, ns3.cesky-hosting.eu | 4 records |
✅ Authoritative Response
Server:91.239.200.243
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: 1595ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 91.239.201.10 |
| AAAA | 1 | 2001:67c:e94:1:1:5bef:c90a:1 |
| NS | 3 | ns1.thinline.cz, ns2.thinline.cz... |
| MX | 2 | mail.sdengineering.cz (pri: 5), email.sdengineering.cz (pri: 10) |
| TXT | 1 | v=spf1 mx a:replikant4090.thinline.cz in |
| SOA | 1 | ns1.thinline.cz hostmaster.sdengineering |
📌 Glue Records Collected
Total: 12
In-bailiwick: 8 (a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz...)
Out-of-bailiwick: 4 (ns1.thinline.cz, ns1.thinline.cz, ns2.thinline.cz...)
Analysis
Hierarchy
sdengineering.cz serves as the parent of mail.sdengineering.cz.
IP Addresses
sdengineering.cz points to two IP numbers: 91.239.201.10 and 2001:67c:e94:1:1:5bef:c90a:1.
Among the host names that share IP numbers with sdengineering.cz are tolios.cz, strikeshop.cz, mail.nunnauuni.cz and two others.
Name Servers
The authoritative name servers for sdengineering.cz are ns1.thinline.cz, ns2.thinline.cz and ns3.cesky-hosting.eu — three in total.
sdengineering.cz has at least partial name server overlap with other domains, such as vitalfootball.co.uk, mmma.cz, stmaria.cz and two others.
ns1.thinline.cz, ns2.thinline.cz and ns3.cesky-hosting.eu all resolve to exactly two IP numbers apiece: ns1.thinline.cz → 91.239.200.243 and 2001:67c:e94:0:1:5bef:c8f3:1; ns2.thinline.cz → 82.100.6.2 and 2001:4de8:fa22:0:1:5264:602:1; ns3.cesky-hosting.eu → 91.239.202.18 and 2001:67c:e94:1:1:5bef:ca12:1.
Mail Servers
The MX records for sdengineering.cz point to two mail servers: email.sdengineering.cz and mail.sdengineering.cz.
email.sdengineering.cz resolves to 88.103.126.204; mail.sdengineering.cz resolves to the same IP address, 88.103.126.204.
Both email.sdengineering.cz and mail.sdengineering.cz resolve to 88.103.126.204 IP addresses each.