usk.cz - robtex.com
usk.cz
| DNSSEC | ⚠️ Not signed | ||||||
| NS | alfa.ns.active24.cz ⚠️ Not in zone NS records | ||||||
| A | 2a02:4a8:ac24:100::96:2🇨🇿 ACTIVE24-AS2a02:4a8::/32 CZ-ACTIVE24-NET6 | ||||||
| PTR | alfa.ns.active24.cz | ||||||
| A | 81.95.96.2🇨🇿 ACTIVE24-AS81.95.96.0/20 CZ-ACTIVE24-NET1 | ||||||
| PTR | alfa.ns.active24.cz | ||||||
| NS | beta.ns.active24.cz ⚠️ Not in zone NS records | ||||||
| A | 2a00:4b40:1000:590:185:111:90:94🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32 | ||||||
| PTR | beta.ns.active24.cz | ||||||
| A | 185.111.90.94🇭🇺 WEBSUPPORT-SRO-SK-AS185.111.88.0/22 | ||||||
| PTR | beta.ns.active24.cz | ||||||
| NS | gama.ns.active24.sk ⚠️ Not in zone NS records | ||||||
| A | 2a00:1968:0:1002:185:71:158:30🇸🇪 LOOPIA32a00:1968::/48 | ||||||
| PTR | gama.ns.active24.sk | ||||||
| A | 185.71.158.30🇸🇪 LOOPIA3185.71.158.0/24 | ||||||
| PTR | gama.ns.active24.sk | ||||||
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=1785457040 | ||||||
Same first word
Similar names
DNS History
11 records (3 active, 8 former)
●NSalfa.ns.active24.cz2015-08-03 → 2026-07-31 · 3 obs
● 2015-08-03 03:42:06
● 2026-07-31 00:30:42
●NSbeta.ns.active24.cz2015-08-03 → 2026-07-31 · 3 obs
● 2015-08-03 03:42:06
● 2026-07-31 00:30:42
●NSgama.ns.active24.sk2015-08-03 → 2026-07-31 · 3 obs
● 2015-08-03 03:42:06
● 2026-07-31 00:30:42
○NSns.dns4.cz2008-10-01 → 2021-04-10 · 4 obs
● 2021-04-10 17:59:18
○ 2026-06-13 02:48:20
○ 2026-07-31 00:30:42
○NSns.dns4.net2008-10-01 → 2008-10-01 · 3 obs
○ 2015-08-03 03:42:06
○ 2026-07-31 00:30:42
○MXin.smtp.cz2008-10-01 → 2016-07-31 · 4 obs
● 2016-07-31 15:52:44
○ 2017-06-07 07:05:08
○ 2026-07-31 00:30:42
○MXmx.smtp.cz2008-10-01 → 2016-07-31 · 4 obs
● 2016-07-31 15:52:44
○ 2017-06-07 07:05:08
○ 2026-07-31 00:30:42
○MXmx1.active24.com2017-06-07 → 2021-04-10 · 5 obs
● 2017-06-07 07:05:08
● 2021-04-10 17:59:18
○ 2026-06-13 02:48:20
○ 2026-07-31 00:30:42
○MXmx2.active24.com2017-06-07 → 2021-04-10 · 5 obs
● 2017-06-07 07:05:08
● 2021-04-10 17:59:18
○ 2026-06-13 02:48:20
○ 2026-07-31 00:30:42
○A81.95.96.212008-10-01 → 2008-10-01 · 3 obs
○ 2015-08-03 03:42:06
○ 2026-07-31 00:30:42
○A81.95.96.292015-08-03 → 2021-04-10 · 5 obs
● 2015-08-03 03:42:06
● 2021-04-10 17:59:18
○ 2026-06-13 02:48:20
○ 2026-07-31 00:30:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz, a.ns.nic.cz | - |
| usk.cz | alfa.ns.active24.cz, gama.ns.active24.sk, beta.ns.active24.cz | 4 records |
✅ Authoritative Response
Server:185.111.90.94
NS records: alfa.ns.active24.cz, gama.ns.active24.sk, beta.ns.active24.cz
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
No DNSKEY for usk.cz
⏱️ Timing
Total: 2021ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (beta.ns.active24.cz, alfa.ns.active24.cz, beta.ns.active24.cz...)
Analysis
Name Servers
The authoritative name servers for usk.cz are alfa.ns.active24.cz, beta.ns.active24.cz and gama.ns.active24.sk — three in total.
There is at least partial name server overlap between usk.cz and other domains — uniware.cz, sumava-lipno.eu, modryhroch.cz and two more among them.
These name servers frequently co-occur with the name servers ns.dns4.cz and ns.globe.cz.
alfa.ns.active24.cz, beta.ns.active24.cz and gama.ns.active24.sk all resolve to exactly two IP numbers apiece: alfa.ns.active24.cz → 81.95.96.2 and 2a02:4a8:ac24:100::96:2; beta.ns.active24.cz → 185.111.90.94 and 2a00:4b40:1000:590:185:111:90:94; gama.ns.active24.sk → 185.71.158.30 and 2a00:1968:0:1002:185:71:158:30.