gnu.cz - robtex.com
gnu.cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 89.221.213.99🇨🇿 WEDOS89.221.208.0/20 Internet, a.s. | ||||||
| PTR | hc1-wd98.wedos.net | ||||||
| NS | ns1.websupport.cz ⭐ | ||||||
| A | 2a10:bbc0::11🇨🇿 ACTIVE24-AS2a10:bbc0::/32 | ||||||
| PTR | ns1.websupport.eu | ||||||
| A | 45.10.97.11🇨🇿 ACTIVE24-AS45.10.97.0/24 | ||||||
| PTR | ns1.websupport.eu | ||||||
| NS | ns2.websupport.cz | ||||||
| A | 2a02:250:3::12🇸🇪 ACTIVE24-AS2a02:250:3::/48 | ||||||
| PTR | ns2.websupport.eu | ||||||
| A | 185.71.159.12🇸🇪 ACTIVE24-AS185.71.159.0/24 | ||||||
| PTR | ns2.websupport.eu | ||||||
| NS | ns3.websupport.eu | ||||||
| A | 2a10:bbc0::13🇨🇿 ACTIVE24-AS2a10:bbc0::/32 | ||||||
| PTR | ns3.websupport.eu | ||||||
| A | 45.10.97.13🇨🇿 ACTIVE24-AS45.10.97.0/24 | ||||||
| PTR | ns3.websupport.eu | ||||||
| MX | wes1-mx1.wedos.net ⭐ | ||||||
| A | 46.28.106.11🇨🇿 WEDOS46.28.104.0/21 Internet, a.s. | ||||||
| PTR | wes1-mx1.wedos.net | ||||||
| MX | wes1-mx2.wedos.net(10) | ||||||
| A | 46.28.106.12🇨🇿 WEDOS46.28.104.0/21 Internet, a.s. | ||||||
| PTR | wes1-mx2.wedos.net | ||||||
| MX | wes1-mx-backup.wedos.net(15) | ||||||
| A | 46.28.106.56🇨🇿 WEDOS46.28.104.0/21 Internet, a.s. | ||||||
| PTR | wes1-mx-backup.wedos.net | ||||||
| SOA | ns1.websupport.czadmin@websupport.cz serial=1744894171 | ||||||
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=1778339834 | ||||||
Previously MX for
Same first word
Similar names
DNS History
12 records (7 active, 5 former)
○NSalfa.ns.active24.cz2015-08-04 → 2016-12-29 · 4 obs
● 2016-12-29 05:34:06
○ 2026-03-27 04:46:06
○ 2026-05-09 15:39:36
○NSbeta.ns.active24.cz2015-08-04 → 2016-12-29 · 4 obs
● 2016-12-29 05:34:06
○ 2026-03-27 04:46:06
○ 2026-05-09 15:39:36
○NSgama.ns.active24.sk2015-08-04 → 2016-12-29 · 4 obs
● 2016-12-29 05:34:06
○ 2026-03-27 04:46:06
○ 2026-05-09 15:39:36
●NSns1.websupport.cz2026-03-27 → 2026-05-09 · 3 obs
● 2026-03-27 04:46:06
● 2026-05-09 15:39:36
●NSns2.websupport.cz2026-03-27 → 2026-05-09 · 3 obs
● 2026-03-27 04:46:06
● 2026-05-09 15:39:36
●NSns3.websupport.eu2026-03-27 → 2026-05-09 · 3 obs
● 2026-03-27 04:46:06
● 2026-05-09 15:39:36
○MXgnu.cz2015-08-04 → 2016-12-29 · 4 obs
● 2016-12-29 05:34:06
○ 2026-03-27 04:46:06
○ 2026-05-09 15:39:36
●MXwes1-mx-backup.wedos.net2026-03-27 → 2026-05-09 · 3 obs
● 2026-03-27 04:46:06
● 2026-05-09 15:39:36
●MXwes1-mx1.wedos.net2026-03-27 → 2026-05-09 · 3 obs
● 2026-03-27 04:46:06
● 2026-05-09 15:39:36
●MXwes1-mx2.wedos.net2026-03-27 → 2026-05-09 · 3 obs
● 2026-03-27 04:46:06
● 2026-05-09 15:39:36
○A89.187.143.992015-08-04 → 2016-12-29 · 4 obs
● 2016-12-29 05:34:06
○ 2026-03-27 04:46:06
○ 2026-05-09 15:39:36
●A89.221.213.992026-03-27 → 2026-05-09 · 3 obs
● 2026-03-27 04:46:06
● 2026-05-09 15:39:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| gnu.cz | ns2.websupport.cz, ns3.websupport.eu, ns1.websupport.cz | - |
✅ Authoritative Response
Server:45.10.97.11
NS records: ns2.websupport.cz, ns3.websupport.eu, ns1.websupport.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 999ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 89.221.213.99 |
| NS | 3 | ns1.websupport.cz, ns2.websupport.cz... |
| MX | 3 | wes1-mx1.wedos.net (pri: 5), wes1-mx2.wedos.net (pri: 10)... |
| SOA | 1 | ns1.websupport.cz admin.websupport.cz |
Analysis
IP Addresses
gnu.cz points to IP number 89.221.213.99.
For instance, other host names cug.cz, www.loj.cz, drl.cz, mail.krj.cz and ozl.cz share IP numbers with gnu.cz.
Name Servers
The delegation for gnu.cz is handled by three name servers: ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.
gnu.cz shares name servers with other domains at least partially, for example ihriska-piccolino.sk, heatnews.cz, ingema.net, hodits.com and mouka.de.
These name servers are commonly used with ns1.websupport.sk, ns2.websupport.sk and ns3.websupport.sk.
Host names with two IPs:
ns1.websupport.cz points to 2a10:bbc0::11 and 45.10.97.11
ns2.websupport.cz points to 2a02:250:3::12 and 185.71.159.12
ns3.websupport.eu points to 2a10:bbc0::13 and 45.10.97.13
Mail Servers
gnu.cz is served by three mail servers: wes1-mx-backup.wedos.net, wes1-mx1.wedos.net and wes1-mx2.wedos.net.
gnu.cz shares mail servers with other domains at least partially; for instance audidily.cz, smn.cz, ak-janota.cz, robotiada.cz and hejobcane.cz.
Host names with a single IP address: wes1-mx-backup.wedos.net points to 46.28.106.56; wes1-mx1.wedos.net points to 46.28.106.11; wes1-mx2.wedos.net points to 46.28.106.12.