cto.cz - robtex.com
cto.cz
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.one.cz ⚠️ Not in zone NS records | ||||||
| A | 2001:470:6f:864::1🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ns1.one.cz | ||||||
| A | 46.149.113.151🇨🇿 ALFSERVIS-AS46.149.112.0/20 Route object 1 AlfServis s.r.o. | ||||||
| PTR | ns1.one.cz | ||||||
| NS | ns2.one.cz ⚠️ Not in zone NS records | ||||||
| A | 193.85.20.140🇨🇿 TMOBILE-CZ193.85.0.0/16 T-Mobile Czech Republic a.s. | ||||||
| PTR | ns2.one.cz | ||||||
| NS | ns3.one.cz ⚠️ Not in zone NS records | ||||||
| A | 2001:470:6f:30f::1:1🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ns3.one.cz | ||||||
| A | 46.149.113.187🇨🇿 ALFSERVIS-AS46.149.112.0/20 Route object 1 AlfServis s.r.o. | ||||||
| PTR | ns3.one.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=1782112636 | ||||||
Same first word
Similar names
DNS History
8 records (3 active, 5 former)
○NSns.forpsi.cz2015-09-04 → 2016-12-26 · 4 obs
● 2015-09-04 00:14:54
● 2016-12-26 19:57:06
○ 2026-06-13 08:31:00
○ 2026-06-22 07:59:16
● 2016-12-26 19:57:06
○ 2026-06-13 08:31:00
○ 2026-06-22 07:59:16
○NSns.forpsi.it2015-09-04 → 2016-12-26 · 4 obs
● 2015-09-04 00:14:54
● 2016-12-26 19:57:06
○ 2026-06-13 08:31:00
○ 2026-06-22 07:59:16
● 2016-12-26 19:57:06
○ 2026-06-13 08:31:00
○ 2026-06-22 07:59:16
○NSns.forpsi.net2015-09-04 → 2016-12-26 · 4 obs
● 2015-09-04 00:14:54
● 2016-12-26 19:57:06
○ 2026-06-13 08:31:00
○ 2026-06-22 07:59:16
● 2016-12-26 19:57:06
○ 2026-06-13 08:31:00
○ 2026-06-22 07:59:16
●NSns1.one.cz2026-06-13 → 2026-06-22 · 3 obs
○ 2016-12-26 19:57:06
● 2026-06-13 08:31:00
● 2026-06-22 07:59:16
● 2026-06-13 08:31:00
● 2026-06-22 07:59:16
●NSns2.one.cz2026-06-13 → 2026-06-22 · 3 obs
○ 2016-12-26 19:57:06
● 2026-06-13 08:31:00
● 2026-06-22 07:59:16
● 2026-06-13 08:31:00
● 2026-06-22 07:59:16
●NSns3.one.cz2026-06-13 → 2026-06-22 · 3 obs
○ 2016-12-26 19:57:06
● 2026-06-13 08:31:00
● 2026-06-22 07:59:16
● 2026-06-13 08:31:00
● 2026-06-22 07:59:16
○MXmxavas.forpsi.com2015-09-04 → 2016-12-26 · 4 obs
● 2015-09-04 00:14:54
● 2016-12-26 19:57:06
○ 2026-06-13 08:31:00
○ 2026-06-22 07:59:16
● 2016-12-26 19:57:06
○ 2026-06-13 08:31:00
○ 2026-06-22 07:59:16
○A81.2.194.1802015-09-04 → 2016-12-26 · 4 obs
● 2015-09-04 00:14:54
● 2016-12-26 19:57:06
○ 2026-06-13 08:31:00
○ 2026-06-22 07:59:16
● 2016-12-26 19:57:06
○ 2026-06-13 08:31:00
○ 2026-06-22 07:59:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| cto.cz | ns1.one.cz, ns2.one.cz, ns3.one.cz | 5 records |
✅ Authoritative Response
Server:46.149.113.151
NS records: ns1.one.cz, ns2.one.cz, ns3.one.cz
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
No DNSKEY for cto.cz
⏱️ Timing
Total: 1099ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 5
Out-of-bailiwick: 5 (ns1.one.cz, ns2.one.cz, ns3.one.cz...)
Analysis
Name Servers
cto.cz carries NS records delegating to ns1.one.cz, ns2.one.cz and ns3.one.cz.
At least some of cto.cz's name servers are shared with other domains, for example vondracek.cz, linoleum.cz, politicke.cz and two more.
Host names that have two IP addresses:
ns1.one.cz resolves to two addresses: 46.149.113.151 and 2001:470:6f:864::1.
ns3.one.cz resolves to two addresses: 46.149.113.187 and 2001:470:6f:30f::1:1.
Host names that point to one IP address:
The hostname ns2.one.cz resolves to 193.85.20.140.