grcm.cz - robtex.com
grcm.cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 193.105.158.197🇨🇿 INTERNET-CZ | ||||||
| NS | ns1.websupport.sk ⭐ 🔒 | ||||||
| A | 2a10:bbc0::11🇨🇿 ACTIVE24-AS | ||||||
| PTR | ns1.websupport.eu | ||||||
| A | 45.10.97.11🇨🇿 ACTIVE24-AS | ||||||
| PTR | ns1.websupport.eu | ||||||
| NS | ns2.websupport.sk 🔒 | ||||||
| A | 2a02:250:3::12🇸🇪 ACTIVE24-AS | ||||||
| PTR | ns2.websupport.eu | ||||||
| A | 185.71.159.12🇸🇪 ACTIVE24-AS | ||||||
| PTR | ns2.websupport.eu | ||||||
| NS | ns3.websupport.sk 🔒 | ||||||
| A | 2a10:bbc0::13🇨🇿 ACTIVE24-AS | ||||||
| PTR | ns3.websupport.eu | ||||||
| A | 45.10.97.13🇨🇿 ACTIVE24-AS | ||||||
| PTR | ns3.websupport.eu | ||||||
| MX | mailin1.grcm.cz ⭐ 🔒 | ||||||
| A | 2a00:4b40:aaaa:2101:45:13:137:7🇸🇰 WEBSUPPORT-SRO-SK-AS | ||||||
| PTR | m1-u5-mx.websupport.sk | ||||||
| A | 45.13.137.8🇸🇰 WEBSUPPORT-SRO-SK-AS | ||||||
| PTR | mx20.websupport.at | ||||||
| MX | mailin2.grcm.cz(100) 🔒 | ||||||
| A | 2a00:4b40:aaaa:2101:45:13:137:8🇸🇰 WEBSUPPORT-SRO-SK-AS | ||||||
| PTR | m1-u6-mx.websupport.sk | ||||||
| A | 45.13.137.9🇸🇰 WEBSUPPORT-SRO-SK-AS | ||||||
| PTR | m1-u7-mx.websupport.sk | ||||||
| TXT | spf2.0/pra a mx include:_sid.m1.websupport.sk ?all | ||||||
| TXT | v=spf1 a mx include:_spf.m1.websupport.sk include:_spf.previo.app include:ser... | ||||||
| SOA | ns1.websupport.skadmin@websupport.sk serial=1767638288 | ||||||
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=1771291036 | ||||||
Up
Same first word
Similar names
DNS History
7 records (6 active, 1 former)
●NSns1.websupport.sk2015-04-27 → 2026-02-21 · 2 obs
● 2026-02-21 23:50:54
●NSns2.websupport.sk2015-04-27 → 2026-02-21 · 2 obs
● 2026-02-21 23:50:54
●NSns3.websupport.sk2015-04-27 → 2026-02-21 · 2 obs
● 2026-02-21 23:50:54
●MXmailin1.grcm.cz2015-04-27 → 2026-02-21 · 2 obs
● 2026-02-21 23:50:54
●MXmailin2.grcm.cz2015-04-27 → 2026-02-21 · 2 obs
● 2026-02-21 23:50:54
●A193.105.158.1972026-02-21 → 2026-02-21 · 2 obs
● 2026-02-21 23:50:54
○A37.9.175.262015-04-27 → 2017-04-20 · 3 obs
● 2017-04-20 22:10:52
○ 2026-02-21 23:50:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| grcm.cz | ns1.websupport.sk, ns2.websupport.sk, ns3.websupport.sk | - |
✅ Authoritative Response
Server: 45.10.97.13
NS records: ns1.websupport.sk, ns2.websupport.sk, ns3.websupport.sk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for grcm.cz (unsigned zone)
⏱️ Timing
Total: 72ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 193.105.158.197 |
| NS | 3 | ns1.websupport.sk, ns2.websupport.sk... |
| MX | 2 | mailin1.grcm.cz (pri: 10), mailin2.grcm.cz (pri: 100) |
| TXT | 2 | spf2.0/pra a mx include:_sid.m1.websuppo, v=spf1 a mx include:_spf.m1.websupport.s |
| SOA | 1 | ns1.websupport.sk admin.websupport.sk |
AI analysis
grcm.cz is the parent of mailin2.grcm.cz and mailin1.grcm.cz.
grcm.cz resolves to a single IP: 193.105.158.197.
Other host names, for instance comune.drazby.cz, caucasus-trekking.com, www.elektronicke-znamky.sk, langfor.cz and a.mx.drazby.cz share IP numbers with grcm.cz.
grcm.cz delegates to three name servers: ns1.websupport.sk, ns2.websupport.sk and ns3.websupport.sk.
grcm.cz shares some name servers with other domains, for example benmax.sk, mi7.sk, forlogis.com, infoweby.sk and virtualvillage.me.
Host names with two IP numbers:
ns1.websupport.sk: 2a10:bbc0::11 and 45.10.97.11
ns2.websupport.sk: 2a02:250:3::12 and 185.71.159.12
ns3.websupport.sk: 2a10:bbc0::13 and 45.10.97.13
grcm.cz is served by two mail servers: mailin1.grcm.cz and mailin2.grcm.cz.
Host names with two IP numbers:
mailin1.grcm.cz points to: 2a00:4b40:aaaa:2101:45:13:137:7 and 45.13.137.8; mailin2.grcm.cz points to: 2a00:4b40:aaaa:2101:45:13:137:8 and 45.13.137.9.