kolnicka.cz - robtex.com
kolnicka.cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 136.243.20.99🇩🇪 Hetzner136.243.0.0/16 HETZNER-RZ-BLK-ERX3 | ||||||
| PTR | host.vipnet.cz | ||||||
| NS | ns2.web4u.cz ⭐ | ||||||
| A | 2a02:a40:100:28ff::12🇨🇿 BlueTone-AS2a02:a40::/32 Ceske Radiokomunikace, a.s. | ||||||
| PTR | ns2.web4u.cz | ||||||
| A | 85.207.53.12🇨🇿 BlueTone-AS85.207.0.0/16 BlueTone-CRa-CZ Fourth address block | ||||||
| PTR | ns2.web4u.cz | ||||||
| NS | ns.web4u.cz | ||||||
| A | 2001:1568:fd::241🇨🇿 WEB4U2001:1568::/33 | ||||||
| PTR | ns.web4u.cz | ||||||
| A | 185.14.224.241🇨🇿 WEB4U185.14.224.0/23 | ||||||
| PTR | ns.web4u.cz | ||||||
| MX | host.vipnet.cz ⭐ | ||||||
| A | 2a01:4f8:211:1162::2🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | host.vipnet.cz | ||||||
| A | 136.243.20.99🇩🇪 Hetzner136.243.0.0/16 HETZNER-RZ-BLK-ERX3 | ||||||
| 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=1786711639 | ||||||
Same first word
kolnicka.cz |
Similar names
DNS History
4 records (4 active, 0 former)
●A136.243.20.992015-07-06 → 2026-08-14 · 2 obs
● 2026-08-14 12:50:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz, a.ns.nic.cz | - |
| kolnicka.cz | ns.web4u.cz, ns2.web4u.cz | 4 records |
✅ Authoritative Response
Server:185.14.224.241
NS records: ns.web4u.cz, ns2.web4u.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 795ms | 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 |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns.web4u.cz, ns.web4u.cz, ns2.web4u.cz...)
Analysis
IP Addresses
kolnicka.cz points to a single IP number: 136.243.20.99.
Additional host names — pemm.cz, drevocentrum.cz, mailin1.lpg-stanice.cz and two others — share IP numbers with kolnicka.cz.
Name Servers
Two name servers handle the delegation for kolnicka.cz: ns2.web4u.cz and ns.web4u.cz.
kolnicka.cz shares its name server setup with other domains, including cefillds.cz, gncs.cz, centrumprivesu.cz and two others.
ns2.web4u.cz and ns.web4u.cz both carry two IP addresses. The A records for ns2.web4u.cz are 85.207.53.12 and 2a02:a40:100:28ff::12; the A records for ns.web4u.cz are 185.14.224.241 and 2001:1568:fd::241.
Mail Servers
kolnicka.cz has one mail server: host.vipnet.cz.
kolnicka.cz shares the same mail server setup as other domains, including elbax.cz, lpg-montaze.cz, ufh.cz and two others.
host.vipnet.cz carries two IP numbers: 136.243.20.99 and 2a01:4f8:211:1162::2.