nbt.cz - robtex.com
nbt.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=1786119442 | ||||||
Same first word
Similar names
DNS History
19 records (8 active, 11 former)
○NSns.gransy.com2018-09-05 → 2018-09-05 · 4 obs
● 2018-09-05 09:44:42
○ 2026-07-25 18:32:24
○ 2026-08-07 16:20:52
●NSns.wedos.com2026-07-25 → 2026-08-07 · 3 obs
● 2026-07-25 18:32:24
● 2026-08-07 16:20:52
●NSns.wedos.cz2026-07-25 → 2026-08-07 · 3 obs
● 2026-07-25 18:32:24
● 2026-08-07 16:20:52
●NSns.wedos.eu2026-07-25 → 2026-08-07 · 3 obs
● 2026-07-25 18:32:24
● 2026-08-07 16:20:52
●NSns.wedos.net2026-07-25 → 2026-08-07 · 3 obs
● 2026-07-25 18:32:24
● 2026-08-07 16:20:52
○NSns1.above.com2015-08-17 → 2016-08-05 · 4 obs
● 2016-08-05 00:42:10
○ 2018-09-05 09:44:42
○ 2026-08-07 16:20:52
○NSns2.above.com2015-08-17 → 2016-08-05 · 4 obs
● 2016-08-05 00:42:10
○ 2018-09-05 09:44:42
○ 2026-08-07 16:20:52
○NSns2.gransy.com2018-09-05 → 2018-09-05 · 4 obs
● 2018-09-05 09:44:42
○ 2026-07-25 18:32:24
○ 2026-08-07 16:20:52
○NSns3.gransy.com2018-09-05 → 2018-09-05 · 4 obs
● 2018-09-05 09:44:42
○ 2026-07-25 18:32:24
○ 2026-08-07 16:20:52
○NSns4.gransy.com2018-09-05 → 2018-09-05 · 4 obs
● 2018-09-05 09:44:42
○ 2026-07-25 18:32:24
○ 2026-08-07 16:20:52
○NSns5.gransy.com2018-09-05 → 2018-09-05 · 4 obs
● 2018-09-05 09:44:42
○ 2026-07-25 18:32:24
○ 2026-08-07 16:20:52
○MXmail.nbt.cz2018-09-05 → 2018-09-05 · 4 obs
● 2018-09-05 09:44:42
○ 2026-07-25 18:32:24
○ 2026-08-07 16:20:52
○MXmail.post-host.net2015-08-17 → 2016-08-05 · 4 obs
● 2016-08-05 00:42:10
○ 2018-09-05 09:44:42
○ 2026-08-07 16:20:52
●MXwes1-mx-backup.wedos.net2026-07-25 → 2026-08-07 · 3 obs
● 2026-07-25 18:32:24
● 2026-08-07 16:20:52
●MXwes1-mx1.wedos.net2026-07-25 → 2026-08-07 · 3 obs
● 2026-07-25 18:32:24
● 2026-08-07 16:20:52
●MXwes1-mx2.wedos.net2026-07-25 → 2026-08-07 · 3 obs
● 2026-07-25 18:32:24
● 2026-08-07 16:20:52
○A103.224.182.2442015-08-17 → 2016-08-05 · 4 obs
● 2016-08-05 00:42:10
○ 2018-09-05 09:44:42
○ 2026-08-07 16:20:52
○A77.78.104.32018-09-05 → 2018-09-05 · 4 obs
● 2018-09-05 09:44:42
○ 2026-07-25 18:32:24
○ 2026-08-07 16:20:52
●A89.221.213.992026-07-25 → 2026-08-07 · 3 obs
● 2026-07-25 18:32:24
● 2026-08-07 16:20:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz, a.ns.nic.cz | - |
| nbt.cz | ns.wedos.cz, ns.wedos.eu, ns.wedos.com, ns.wedos.net | 4 records |
✅ Authoritative Response
Server:45.138.106.1
NS records: ns.wedos.cz, ns.wedos.eu, ns.wedos.com, ns.wedos.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for nbt.cz (unsigned zone)
⏱️ Timing
Total: 697ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 89.221.213.99 |
| NS | 4 | ns.wedos.cz, ns.wedos.eu... |
| MX | 3 | wes1-mx2.wedos.net (pri: 1), wes1-mx-backup.wedos.net (pri: 10)... |
| SOA | 1 | ns.wedos.net wedos.wedos.com |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns.wedos.cz, ns.wedos.cz, ns.wedos.cz...)
Analysis
IP Addresses
nbt.cz has exactly one IP address — 89.221.213.99.
jlm.cz, zbi.cz, nvd.cz plus two other host names have IP numbers in common with nbt.cz.
Name Servers
Four name servers handle the delegation for nbt.cz: ns.wedos.com, ns.wedos.cz, ns.wedos.eu and ns.wedos.net.
nbt.cz partially shares its NS delegation with several other domains, including cisty-bazen.cz, amnature.cz, salab.cz and two others.
Host names with four IP addresses:
ns.wedos.cz maps to the following IP addresses: 45.138.106.1, 185.8.238.1, 2a0e:acc0:1::caff:caff:cafb and 2a0e:acc0:2::c:1:c1.
ns.wedos.net maps to the following IP addresses: 75.2.92.86, 99.83.142.9, 2600:9000:a419:5a54:19f7:a614:36fd:2825 and 2600:9000:a705:25bb:c632:5e5a:dd9c:1e46.
Host names pointing to two IP addresses:
ns.wedos.com directs traffic to 45.138.106.0 and 2a0e:acc0:1::cafe:cafe:cafe.
ns.wedos.eu directs traffic to 185.8.238.0 and 2a0e:acc0:2::b:1:b1.
Mail Servers
nbt.cz uses three mail servers — wes1-mx-backup.wedos.net, wes1-mx1.wedos.net and wes1-mx2.wedos.net.
At least some of the mail servers used by nbt.cz are shared with other domains: eventbox.cz, automex.cz, plaveckaskolauh.cz and two others among them.
The hostnames wes1-mx-backup.wedos.net, wes1-mx1.wedos.net and wes1-mx2.wedos.net each resolve to a single IP: wes1-mx-backup.wedos.net → 46.28.106.56, wes1-mx1.wedos.net → 46.28.106.11, wes1-mx2.wedos.net → 46.28.106.12.