tonicka.cz - robtex.com
tonicka.cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| 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 2011-05-31 #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=1776100634 | ||||||
Same first word
Similar names
DNS History
5 records (4 active, 1 former)
○MXmail.tonicka.cz2015-07-12 → 2017-05-26 · 4 obs
● 2017-05-26 10:49:06
○ 2026-04-07 02:13:18
○ 2026-04-13 17:44:48
●MXmx.web4u.cz2026-04-07 → 2026-04-13 · 3 obs
● 2026-04-07 02:13:18
● 2026-04-13 17:44:48
●A81.91.86.112015-07-12 → 2026-04-13 · 2 obs
● 2026-04-13 17:44:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| tonicka.cz | ns2.web4u.cz, ns.web4u.cz | 4 records |
✅ Authoritative Response
Server:85.207.53.12
NS records: ns2.web4u.cz, ns.web4u.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 966ms | 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
IP Addresses
tonicka.cz points to IP number 81.91.86.11.
For instance, other host names unassigned-81-91-81-181.web4u.cz, blackbarbarian.cz, mail.nrw.via-natura.cz, parsek.cz and kvetinarstviumadly.cz share IP numbers with tonicka.cz.
Name Servers
tonicka.cz is delegated to two name servers: ns2.web4u.cz and ns.web4u.cz.
tonicka.cz uses the same name server setup as other domains such as kurtis.cz, neo-som.com, suntool.eu, prijd.com and it2b.cz.
tonicka.cz shares name servers with other domains at least partially, for instance varicad.eu and varicad.sk.
These name servers are commonly used with ns1.varicad.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.
Mail Servers
tonicka.cz is handled by a single mail server, mx.web4u.cz.
tonicka.cz shares the same mail server setup as other domains, for instance vusondras.cz, schussler.cz, jsmezbrna.cz, notarky.com and membranes.eu.
tonicka.cz shares mail servers with other domains at least partially; for instance plynove-vzpery.cz, zus-olesska.cz, sidus.cz, skiklinovec.cz and kotra.cz.
mx.web4u.cz resolves to two IPs: 2001:1568::7012 and 81.91.87.12.