kolnicka.cz - robtex.com
kolnicka.cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 136.243.20.99🇩🇪 Hetzner | ||||||
| PTR | host.vipnet.cz | ||||||
| NS | ns2.web4u.cz ⭐ 🔒 | ||||||
| A | 2a02:a40:100:28ff::12🇨🇿 BlueTone-AS | ||||||
| PTR | ns2.web4u.cz | ||||||
| A | 85.207.53.12🇨🇿 BlueTone-AS | ||||||
| PTR | ns2.web4u.cz | ||||||
| NS | ns.web4u.cz 🔒 | ||||||
| A | 2001:1568:fd::241🇨🇿 WEB4U | ||||||
| PTR | ns.web4u.cz | ||||||
| A | 185.14.224.241🇨🇿 WEB4U | ||||||
| PTR | ns.web4u.cz | ||||||
| MX | host.vipnet.cz ⭐ 🔒 | ||||||
| A | 2a01:4f8:211:1162::2🇩🇪 Hetzner | ||||||
| PTR | host.vipnet.cz | ||||||
| A | 136.243.20.99🇩🇪 Hetzner | ||||||
| PTR | host.vipnet.cz | ||||||
| TXT | v=spf1 a mx -all | ||||||
| SOA | ns.web4u.czadmin@web4u.cz 2012-07-01 #1 | ||||||
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=1771291036 | ||||||
Similar names
DNS History
4 records (4 active, 0 former)
●A136.243.20.992015-07-06 → 2026-02-23 · 2 obs
● 2026-02-23 03:19:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| kolnicka.cz | ns.web4u.cz, ns2.web4u.cz | - |
✅ Authoritative Response
Server: 85.207.53.12
NS records: ns.web4u.cz, ns2.web4u.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for kolnicka.cz (unsigned zone)
⏱️ Timing
Total: 223ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 136.243.20.99 |
| NS | 2 | ns.web4u.cz, ns2.web4u.cz |
| MX | 1 | host.vipnet.cz (pri: 10) |
| TXT | 1 | v=spf1 a mx -all |
| SOA | 1 | ns.web4u.cz admin.web4u.cz |
AI analysis
kolnicka.cz resolves to a single IP: 136.243.20.99.
Other host names, for instance pemm.cz, drevocentrum.cz, mailin1.lpg-stanice.cz, e-shop.lpg-montaze.cz and www.atib.cz share IP numbers with kolnicka.cz.
kolnicka.cz has two name servers: ns2.web4u.cz and ns.web4u.cz.
kolnicka.cz shares the same name server setup as other domains, for example cefillds.cz, gncs.cz, centrumprivesu.cz, singingrock-polygon.com and idiz.cz.
kolnicka.cz partially shares name servers with other domains, for instance www.fairtom.com.
Host names with two IP numbers:
ns2.web4u.cz points to: 2a02:a40:100:28ff::12 and 85.207.53.12; ns.web4u.cz points to: 2001:1568:fd::241 and 185.14.224.241.
kolnicka.cz is handled by a single mail server, host.vipnet.cz.
kolnicka.cz shares the mail server setup with other domains, for example elbax.cz, lpg-montaze.cz, ufh.cz, prestavby-lpg.cz and kubaso.cz.
host.vipnet.cz resolves to two IPs: 2a01:4f8:211:1162::2 and 136.243.20.99.