inf-centrum.cz - robtex.com
inf-centrum.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 81.2.234.18🇨🇿 INTERNET-CZ81.2.192.0/18 INTERNET CZ, a.s. | ||||||
| PTR | ns.raby.cz | ||||||
| NS | ns3.raby.cz ⭐ | ||||||
| A | 2001:15e8:110:4fa7::1🇨🇿 INTERNET-CZ2001:15e8::/32 | ||||||
| PTR | ns3.raby.cz | ||||||
| A | 80.211.208.167🇨🇿 INTERNET-CZ80.211.192.0/19 INTERNET CZ,a.s. | ||||||
| PTR | ns3.raby.cz | ||||||
| NS | ns.raby.cz | ||||||
| A | 2001:15e8:110:212::1🇨🇿 INTERNET-CZ2001:15e8::/32 | ||||||
| PTR | ns.raby.cz | ||||||
| A | 81.2.234.18🇨🇿 INTERNET-CZ81.2.192.0/18 INTERNET CZ, a.s. | ||||||
| PTR | ns.raby.cz | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns.raby.czhostmaster@ns1.raby.cz serial=1707206901 | ||||||
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=1784648842 | ||||||
Same first word
inf-centrum.cz |
DNS History
10 records (3 active, 7 former)
○NSns.inf-centrum.cz2015-06-04 → 2015-06-04 · 3 obs
○ 2015-10-21 05:54:54
○ 2026-07-21 16:19:02
○NSns.pardub.cz2015-06-04 → 2015-10-21 · 4 obs
● 2015-10-21 05:54:54
○ 2016-01-01 15:25:28
○ 2026-07-21 16:19:02
●NSns.raby.cz2020-02-24 → 2026-07-21 · 3 obs
● 2020-02-24 12:59:02
● 2026-07-21 16:19:02
○NSns1.raby.cz2016-01-01 → 2017-03-24 · 5 obs
● 2016-01-01 15:25:28
● 2017-03-24 07:35:22
○ 2020-02-24 12:59:02
○ 2026-07-21 16:19:02
○NSns2.pardub.cz2015-06-04 → 2015-10-21 · 4 obs
● 2015-10-21 05:54:54
○ 2016-01-01 15:25:28
○ 2026-07-21 16:19:02
○NSns2.raby.cz2016-01-01 → 2020-02-24 · 7 obs
● 2016-01-01 15:25:28
○ 2016-04-10 05:12:02
○ 2017-03-24 07:35:22
● 2020-02-24 12:59:02
○ 2026-03-25 21:43:16
○ 2026-07-21 16:19:02
●NSns3.raby.cz2016-04-10 → 2026-07-21 · 6 obs
● 2016-04-10 05:12:02
● 2017-03-24 07:35:22
○ 2020-02-24 12:59:02
● 2026-03-25 21:43:16
● 2026-07-21 16:19:02
○A77.236.206.162015-06-04 → 2015-10-21 · 4 obs
● 2015-10-21 05:54:54
○ 2016-01-01 15:25:28
○ 2026-07-21 16:19:02
●A81.2.234.182020-02-24 → 2026-07-21 · 3 obs
● 2020-02-24 12:59:02
● 2026-07-21 16:19:02
○A81.2.242.1712016-01-01 → 2017-03-24 · 5 obs
● 2016-01-01 15:25:28
● 2017-03-24 07:35:22
○ 2020-02-24 12:59:02
○ 2026-07-21 16:19:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | c.ns.nic.cz, b.ns.nic.cz, a.ns.nic.cz, d.ns.nic.cz | - |
| inf-centrum.cz | ns.raby.cz, ns3.raby.cz | 4 records |
✅ Authoritative Response
Server:80.211.208.167
NS records: ns.raby.cz, ns3.raby.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for inf-centrum.cz (unsigned zone)
⏱️ Timing
Total: 858ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.2.234.18 |
| NS | 2 | ns.raby.cz, ns3.raby.cz |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns.raby.cz hostmaster.ns1.raby.cz |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns.raby.cz, ns.raby.cz, ns3.raby.cz...)
Analysis
IP Addresses
inf-centrum.cz resolves to just one IP address, 81.2.234.18.
Two other host names, along with zimmerfrei.cz, karty.cz and iii.cz, also share IP numbers with inf-centrum.cz.
Name Servers
Two name servers handle the delegation for inf-centrum.cz: ns3.raby.cz and ns.raby.cz.
inf-centrum.cz shares its NS records with other domains, for example adresar.cz, livein.cz, spmp.cz and two others.
inf-centrum.cz shares at least some of its name servers with other domains, including mikroregiony.eu, hrady.com, vychodnicechy.eu and two others.
These name servers are frequently seen alongside the name servers ns2.raby.cz.
ns3.raby.cz and ns.raby.cz both carry two IP addresses. The A records for ns3.raby.cz are 80.211.208.167 and 2001:15e8:110:4fa7::1; the A records for ns.raby.cz are 81.2.234.18 and 2001:15e8:110:212::1.