gracos.cz - robtex.com
gracos.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2a01:5e0:26::170🇨🇿 VODAFONE-CZ-AS2a01:5e0::/33 Vodafone Czech Republic a.s. | ||||||
| PTR | redbox.nanoserver.cz | ||||||
| A | 88.146.242.170🇨🇿 VODAFONE-CZ-AS88.146.192.0/18 Vodafone Czech Republic a.s. | ||||||
| NS | ns1.tele3.cz ⭐ | ||||||
| A | 2001:1528:123::d01🇨🇿 CASABLANCA-AS2001:1528::/32 Casablanca INT v6 network | ||||||
| PTR | ns1.tele3.cz | ||||||
| A | 81.0.217.111🇨🇿 CASABLANCA-AS81.0.217.0/24 Casablanca INT | ||||||
| NS | ns2.tele3.cz | ||||||
| A | 2001:4de8:fa71:7e1e::d02🇨🇿 QUANTCOM-AS2001:4de8::/32 Dial Telecom, a.s. | ||||||
| PTR | ns2.tele3.cz | ||||||
| A | 95.80.251.222🇨🇿 QUANTCOM-AS95.80.192.0/18 Dial Telecom, a.s. | ||||||
| PTR | ns2.tele3.cz | ||||||
| NS | ns3.tele3.eu | ||||||
| A | 2a01:4f8:162:24c1::d03🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | ns3.tele3.eu | ||||||
| A | 5.9.97.250🇩🇪 Hetzner5.9.0.0/16 HETZNER-RZ-FKS-BLK5 | ||||||
| PTR | ns3.tele3.eu | ||||||
| MX | mail.dc3.cz ⭐ | ||||||
| A | 81.0.217.5🇨🇿 CASABLANCA-AS81.0.217.0/24 Casablanca INT | ||||||
| SOA | ns1.tele3.czroot@tele3.cz serial=1780006830 | ||||||
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=1784558839 | ||||||
Same first word
Similar names
DNS History
13 records (6 active, 7 former)
●NSns1.tele3.cz2026-06-13 → 2026-07-20 · 3 obs
● 2026-06-13 06:39:52
● 2026-07-20 14:59:42
○NSns1.thinline.cz2015-07-05 → 2017-03-27 · 4 obs
● 2017-03-27 19:55:02
○ 2026-06-13 06:39:52
○ 2026-07-20 14:59:42
●NSns2.tele3.cz2026-06-13 → 2026-07-20 · 3 obs
● 2026-06-13 06:39:52
● 2026-07-20 14:59:42
○NSns2.thinline.cz2015-07-05 → 2017-03-27 · 4 obs
● 2017-03-27 19:55:02
○ 2026-06-13 06:39:52
○ 2026-07-20 14:59:42
○NSns3.cesky-hosting.eu2015-07-05 → 2017-03-27 · 4 obs
● 2017-03-27 19:55:02
○ 2026-06-13 06:39:52
○ 2026-07-20 14:59:42
●NSns3.tele3.eu2026-06-13 → 2026-07-20 · 3 obs
● 2026-06-13 06:39:52
● 2026-07-20 14:59:42
●MXmail.dc3.cz2026-06-13 → 2026-07-20 · 3 obs
● 2026-06-13 06:39:52
● 2026-07-20 14:59:42
○MXmx1b20.thinline.cz2015-07-05 → 2017-03-27 · 4 obs
● 2017-03-27 19:55:02
○ 2026-06-13 06:39:52
○ 2026-07-20 14:59:42
○MXmx1d10.thinline.cz2015-07-05 → 2017-03-27 · 4 obs
● 2017-03-27 19:55:02
○ 2026-06-13 06:39:52
○ 2026-07-20 14:59:42
○A2a00:1ed0:2:0:1:5bef:c81e:12015-07-05 → 2017-03-27 · 4 obs
● 2017-03-27 19:55:02
○ 2026-06-13 06:39:52
○ 2026-07-20 14:59:42
●A2a01:5e0:26::1702026-06-13 → 2026-07-20 · 3 obs
● 2026-06-13 06:39:52
● 2026-07-20 14:59:42
●A88.146.242.1702026-06-13 → 2026-07-20 · 3 obs
● 2026-06-13 06:39:52
● 2026-07-20 14:59:42
○A91.239.200.302015-07-05 → 2017-03-27 · 4 obs
● 2017-03-27 19:55:02
○ 2026-06-13 06:39:52
○ 2026-07-20 14:59:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | b.ns.nic.cz, a.ns.nic.cz, d.ns.nic.cz, c.ns.nic.cz | - |
| gracos.cz | ns3.tele3.eu, ns1.tele3.cz, ns2.tele3.cz | 4 records |
✅ Authoritative Response
Server:95.80.251.222
NS records: ns3.tele3.eu, ns1.tele3.cz, ns2.tele3.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for gracos.cz (unsigned zone)
⏱️ Timing
Total: 2026ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 88.146.242.170 |
| AAAA | 1 | 2a01:5e0:26::170 |
| NS | 3 | ns2.tele3.cz, ns1.tele3.cz... |
| MX | 1 | mail.dc3.cz (pri: 10) |
| SOA | 1 | ns1.tele3.cz root.tele3.cz |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns2.tele3.cz, ns1.tele3.cz, ns2.tele3.cz...)
Analysis
IP Addresses
gracos.cz points to the IP addresses 88.146.242.170 and 2a01:5e0:26::170
Two other host names, along with cadd.cz, 2plus2.cz and insaan.cz, also share IP numbers with gracos.cz.
Name Servers
DNS for gracos.cz is handled by three authoritative name servers: ns1.tele3.cz, ns2.tele3.cz and ns3.tele3.eu.
There is at least partial name server overlap between gracos.cz and other domains — t3.cz, vase3.cz, kinoki.sk and two more among them.
Three hostnames — ns1.tele3.cz, ns2.tele3.cz and ns3.tele3.eu — each have two IP addresses: ns1.tele3.cz has 81.0.217.111 and 2001:1528:123::d01, ns2.tele3.cz has 95.80.251.222 and 2001:4de8:fa71:7e1e::d02, and ns3.tele3.eu has 5.9.97.250 and 2a01:4f8:162:24c1::d03.
Mail Servers
The sole mail server for gracos.cz is mail.dc3.cz.
Among the domains sharing a mail server setup with gracos.cz are bigcity.cz, docucloud.cz, superstat.cz and two others.
mail.dc3.cz has exactly one IP number: 81.0.217.5.