vu.cz - robtex.com
vu.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 195.140.252.69🇨🇿 MASTER-AS | ||||||
| PTR | cnt.io.cz | ||||||
| NS | ns.io.cz ⭐ | ||||||
| A | 2a01:430:d:0:2cc:50ff:fe56:aca4🇨🇿 MASTER-AS | ||||||
| PTR | ns.io.cz | ||||||
| A | 195.140.254.249🇨🇿 MASTER-AS | ||||||
| PTR | ns.io.cz | ||||||
| NS | ns.vu.cz | ||||||
| A | 82.142.83.92🇨🇿 VODAFONE-CZ-AS | ||||||
| PTR | ns.vu.cz | ||||||
| MX | mx1.io.cz ⭐ | ||||||
| A | 2a01:430:d:0:2cc:e5ff:fe47:9df4🇨🇿 MASTER-AS | ||||||
| PTR | mx1.io.cz | ||||||
| A | 195.140.254.204🇨🇿 MASTER-AS | ||||||
| PTR | mx1.io.cz | ||||||
| TXT | v=spf1 include:_spf.chl.cz include:_spfv6.chl.cz include:_spf.io.cz -all | ||||||
| SOA | ns.io.czhostmaster@io.cz 2025-11-12 #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 | ||||||
Up
Same first word
Similar names
DNS History
5 records (4 active, 1 former)
●NSns.vu.cz2015-09-02 → 2026-02-23 · 2 obs
● 2026-02-23 03:50:24
●A195.140.252.692020-06-09 → 2026-02-23 · 3 obs
● 2020-06-09 04:30:58
● 2026-02-23 03:50:24
○A89.250.246.2202015-09-02 → 2019-11-26 · 4 obs
● 2019-11-26 20:31:32
○ 2020-06-09 04:30:58
○ 2026-02-23 03:50:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| vu.cz | ns.vu.cz, ns.io.cz | 3 records |
✅ Authoritative Response
Server: 195.140.254.249
NS records: ns.vu.cz, ns.io.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for vu.cz (unsigned zone)
⏱️ Timing
Total: 837ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 195.140.252.69 |
| NS | 2 | ns.io.cz, ns.vu.cz |
| MX | 1 | mx1.io.cz (pri: 10) |
| TXT | 1 | v=spf1 include:_spf.chl.cz include:_spfv |
| SOA | 1 | ns.io.cz hostmaster.io.cz |
📌 Glue Records Collected
Total: 3
In-bailiwick: 1 (ns.vu.cz)
Out-of-bailiwick: 2 (ns.io.cz, ns.io.cz)
AI analysis
vu.cz is the parent of www.vu.cz and ns.vu.cz.
vu.cz resolves to a single IP: 195.140.252.69.
Other host names, for instance atax.cz, reml.cz, arn.cz, cantharellus.nofuture.cz and olympia.cz share IP numbers with vu.cz.
vu.cz has two name servers: ns.io.cz and ns.vu.cz.
vu.cz shares the same name server setup as other domains, for example phonesystems.cz, lelkova.cz, omdc.cz, libriitaliani.cz and ceka.cz.
vu.cz shares name servers with other domains to some extent, for example olympia.cz and 160.203.89.in-addr.arpa.
Host names with two IP numbers: ns.io.cz points to: 2a01:430:d:0:2cc:50ff:fe56:aca4 and 195.140.254.249.
Host names with one IP number: ns.vu.cz points to: 82.142.83.92.
vu.cz is handled by a single mail server, mx1.io.cz.
vu.cz shares the mail server setup with other domains, for example lelkova.cz, omdc.cz, libriitaliani.cz, ceka.cz and fleximoods.com.
mx1.io.cz resolves to two IPs: 2a01:430:d:0:2cc:e5ff:fe47:9df4 and 195.140.254.204.