gcentrum.cz - robtex.com
gcentrum.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=1778550438 | ||||||
Same first word
gcentrum.cz |
Similar names
DNS History
16 records (6 active, 10 former)
○NSalfa.ns.active24.cz2015-08-22 → 2017-06-13 · 4 obs
● 2017-06-13 11:33:18
○ 2026-02-14 17:14:20
○ 2026-05-12 02:14:30
○NSbeta.ns.active24.cz2015-08-22 → 2017-06-13 · 4 obs
● 2017-06-13 11:33:18
○ 2026-02-14 17:14:20
○ 2026-05-12 02:14:30
○NSgama.ns.active24.sk2015-08-22 → 2017-06-13 · 4 obs
● 2017-06-13 11:33:18
○ 2026-02-14 17:14:20
○ 2026-05-12 02:14:30
●NSns1.websupport.cz2026-02-14 → 2026-05-12 · 3 obs
● 2026-02-14 17:14:20
● 2026-05-12 02:14:30
●NSns2.websupport.cz2026-02-14 → 2026-05-12 · 3 obs
● 2026-02-14 17:14:20
● 2026-05-12 02:14:30
●NSns3.websupport.eu2026-02-14 → 2026-05-12 · 3 obs
● 2026-02-14 17:14:20
● 2026-05-12 02:14:30
●MXgcentrum-cz.mail.protection.outlook.com2026-02-14 → 2026-05-12 · 3 obs
● 2026-02-14 17:14:20
● 2026-05-12 02:14:30
○MXin.smtp.cz2015-12-16 → 2016-03-26 · 5 obs
● 2015-12-16 15:27:46
● 2016-03-26 11:31:38
○ 2017-06-13 11:33:18
○ 2026-05-12 02:14:30
○MXmx.smtp.cz2015-12-16 → 2016-03-26 · 5 obs
● 2015-12-16 15:27:46
● 2016-03-26 11:31:38
○ 2017-06-13 11:33:18
○ 2026-05-12 02:14:30
○MXmx1.active24.com2017-06-13 → 2017-06-13 · 4 obs
● 2017-06-13 11:33:18
○ 2026-02-14 17:14:20
○ 2026-05-12 02:14:30
○MXmx2.active24.com2017-06-13 → 2017-06-13 · 4 obs
● 2017-06-13 11:33:18
○ 2026-02-14 17:14:20
○ 2026-05-12 02:14:30
○MXmxavas.forpsi.com2015-08-22 → 2015-08-22 · 3 obs
○ 2015-12-16 15:27:46
○ 2026-05-12 02:14:30
●A2001:1528:279:0:217:11:227:762026-02-14 → 2026-05-12 · 3 obs
● 2026-02-14 17:14:20
● 2026-05-12 02:14:30
●A217.11.227.762026-02-14 → 2026-05-12 · 3 obs
● 2026-02-14 17:14:20
● 2026-05-12 02:14:30
○A2a02:4a8:ac24:110::10:952015-08-22 → 2017-06-13 · 4 obs
● 2017-06-13 11:33:18
○ 2026-02-14 17:14:20
○ 2026-05-12 02:14:30
○A31.15.10.952015-08-22 → 2017-06-13 · 4 obs
● 2017-06-13 11:33:18
○ 2026-02-14 17:14:20
○ 2026-05-12 02:14:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| gcentrum.cz | ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu | - |
✅ Authoritative Response
Server:45.10.97.13
NS records: ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 719ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 217.11.227.76 |
| AAAA | 1 | 2001:1528:279:0:217:11:227:76 |
| NS | 3 | ns1.websupport.cz, ns2.websupport.cz... |
| MX | 1 | gcentrum-cz.mail.protection.outlook.com |
| TXT | 2 | MS=ms94358248, v=spf1 include:spf.protection.outlook.co |
| SOA | 1 | ns1.websupport.cz admin.websupport.cz |
Analysis
IP Addresses
gcentrum.cz resolves to two IPs: 2001:1528:279:0:217:11:227:76 and 217.11.227.76.
other host names for instance skolka-letovice.cz, dobrkovice.cz, ciml.cz, msdrtinova.cz and soussro.cz share IP numbers with gcentrum.cz.
Name Servers
gcentrum.cz is delegated to three name servers: ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.
gcentrum.cz at least partially shares name servers with other domains, for instance litfinger.com, jeartecnica.com, siob.cz, softwarearcheology.com and magnumelektro.cz.
These name servers are commonly used with ns1.websupport.sk, ns2.websupport.sk and ns3.websupport.sk.
Host names with two IP numbers:
Host ns1.websupport.cz points to 2a10:bbc0::11 and 45.10.97.11.
Host ns2.websupport.cz points to 2a02:250:3::12 and 185.71.159.12.
Host ns3.websupport.eu points to 2a10:bbc0::13 and 45.10.97.13.
Mail Servers
gcentrum.cz is handled by a single mail server, gcentrum-cz.mail.protection.outlook.com.
Host name gcentrum-cz.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca04::2, 2a01:111:f403:ca04::7, 2a01:111:f403:ca04::10, 2a01:111:f403:ca09::d, 52.101.68.16, 52.101.68.21, 52.101.68.27 and 52.101.73.19.