offtopic.cz - robtex.com
offtopic.cz
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=1776043033 | ||||||
Subdomains
post.offtopic.cz |
Same first word
Similar names
DNS History
7 records (6 active, 1 former)
●NSns.gransy.com2015-08-03 → 2026-04-13 · 2 obs
● 2026-04-13 01:41:34
●NSns2.gransy.com2015-08-03 → 2026-04-13 · 2 obs
● 2026-04-13 01:41:34
●NSns3.gransy.com2015-08-03 → 2026-04-13 · 2 obs
● 2026-04-13 01:41:34
●NSns4.gransy.com2015-08-03 → 2026-04-13 · 2 obs
● 2026-04-13 01:41:34
●NSns5.gransy.com2015-08-03 → 2026-04-13 · 2 obs
● 2026-04-13 01:41:34
●MXmail.gransy.com2026-03-14 → 2026-04-13 · 3 obs
● 2026-03-14 11:41:50
● 2026-04-13 01:41:34
○MXpost.offtopic.cz2015-08-03 → 2017-05-21 · 4 obs
● 2017-05-21 00:41:34
○ 2026-03-14 11:41:50
○ 2026-04-13 01:41:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| offtopic.cz | ns.gransy.com, ns2.gransy.com, ns3.gransy.com, ns4.gransy.com... | - |
✅ Authoritative Response
Server:31.192.227.223
NS records: ns.gransy.com, ns2.gransy.com, ns3.gransy.com, ns4.gransy.com, ns5.gransy.com
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 2165ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 5 | ns3.gransy.com, ns5.gransy.com... |
| MX | 1 | mail.gransy.com (pri: 10) |
| TXT | 1 | v=spf1 a mx include:gransy.com |
| SOA | 1 | ns.gransy.com root.gransy.com |
Analysis
Hierarchy
The parent of post.offtopic.cz is offtopic.cz.
Name Servers
offtopic.cz is delegated to five name servers: ns2.gransy.com, ns3.gransy.com, ns4.gransy.com, ns5.gransy.com and ns.gransy.com.
offtopic.cz partially shares name servers with other domains; examples include daramis.com, screenshield.com, activenet.email, sbor-canticorum.cz and qtc.cz.
These name servers are commonly used with ns2.internetserver.cz, ns.internetserver.cz and ns3.dns-station.net.
Five IP numbers:
ns2.gransy.com points to: 2001:19f0:6801:474:5400:1ff:fec5:8efb, 2001:19f0:7401:81e0:5400:1ff:fec5:8ef6, 95.179.192.121, 217.16.185.221 and 217.69.4.49
ns3.gransy.com points to: 2a02:750:7::2e7, 2a02:750:8::32, 46.21.100.103, 77.78.126.35 and 109.74.7.71
Four IP numbers:
ns4.gransy.com points to: 2001:19f0:5401:69b:5400:1ff:fec5:8f3f, 2a00:1a28:2010:1::89, 66.42.94.136 and 80.67.7.209
ns.gransy.com points to: 2001:19f0:5001:1caf:5400:1ff:fec5:8d50, 45.76.90.43, 77.78.104.149 and 95.179.136.180
Two IP numbers:
ns5.gransy.com points to: 2a02:750:5::538 and 31.192.227.223
Mail Servers
offtopic.cz is handled by a single mail server, mail.gransy.com.
offtopic.cz has the same mail server setup as other domains, including bandazzaludka.sk, fotbalkyfas.cz, graphicworld.cz, reloader.cz and perfektne-pradlo.sk.
offtopic.cz shares some mail servers with other domains, at least partially, such as nej-ceny.cz, autocadltbg.com, sudokucup.com, bulletin-advokacie.cz and svj-danska.cz.
These mail servers are often used with the mail servers mail2.gransy.com.
mail.gransy.com points to seven IP numbers: 2001:1528:137::f1, 82.208.29.194, 185.28.193.5, 185.28.193.11, 185.28.193.23, 185.28.193.36 and 185.28.193.37.