vvoko.cz - robtex.com
vvoko.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 81.91.86.11🇨🇿 WEB4U81.91.80.0/21 | ||||||
| PTR | php5.web4u.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 | mx.web4u.cz ⭐ | ||||||
| A | 2001:1568::7012🇨🇿 WEB4U2001:1568::/33 | ||||||
| PTR | mx.web4u.cz | ||||||
| A | 81.91.87.12🇨🇿 WEB4U81.91.80.0/21 | ||||||
| PTR | mx.web4u.cz | ||||||
| SOA | ns.web4u.czadmin@web4u.cz 2010-09-16 #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=1777985237 | ||||||
Subdomains
mail.vvoko.cz |
Same first word
Similar names
DNS History
5 records (4 active, 1 former)
○MXmail.vvoko.cz2015-06-02 → 2017-05-27 · 4 obs
● 2017-05-27 15:12:00
○ 2026-05-04 10:41:52
○ 2026-05-05 13:13:32
●MXmx.web4u.cz2026-05-04 → 2026-05-05 · 3 obs
● 2026-05-04 10:41:52
● 2026-05-05 13:13:32
●A81.91.86.112015-06-02 → 2026-05-05 · 2 obs
● 2026-05-05 13:13:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | c.ns.nic.cz, d.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz | - |
| vvoko.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: 770ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.91.86.11 |
| NS | 2 | ns.web4u.cz, ns2.web4u.cz |
| MX | 1 | mx.web4u.cz (pri: 10) |
| SOA | 1 | ns.web4u.cz admin.web4u.cz |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns2.web4u.cz, ns.web4u.cz, ns2.web4u.cz...)
Analysis
Hierarchy
The parent of mail.vvoko.cz is vvoko.cz.
IP Addresses
vvoko.cz points to IP number: 81.91.86.11.
Other host names such as unassigned-81-91-83-157.web4u.cz, veslovani.eu, r50.eu, unassigned-81-91-86-102.web4u.cz and mujnovybyt.cz share IPs with vvoko.cz.
Name Servers
vvoko.cz is delegated to two name servers: ns2.web4u.cz and ns.web4u.cz.
vvoko.cz shares the same name server setup as tarpanext.com, hvbreal.eu, dorty-olomouc.com, kdomestriha.cz and bestforexbroker.eu.
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.
Mail Servers
vvoko.cz is handled by a single mail server, mx.web4u.cz.
The mail server setup for vvoko.cz matches that of other domains, for instance reproman.info, e-senat.cz, elektrozvon.cz, ridefox.cz and szarazvirag.com.
vvoko.cz shares some mail servers with other domains, at least in part, for instance sasta.cz.
mx.web4u.cz points to two IPs: 2001:1568::7012 and 81.91.87.12.