co - dns.ninja
co
(root)
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a.root-servers.net ⭐ | ||||||
| NS | b.root-servers.net | ||||||
| NS | c.root-servers.net | ||||||
| NS | d.root-servers.net | ||||||
| NS | e.root-servers.net | ||||||
| NS | f.root-servers.net | ||||||
| NS | g.root-servers.net | ||||||
| NS | h.root-servers.net | ||||||
| NS | i.root-servers.net | ||||||
| NS | j.root-servers.net | ||||||
| NS | k.root-servers.net | ||||||
| NS | l.root-servers.net | ||||||
| NS | m.root-servers.net | ||||||
| SOA | a.root-servers.netnstld@verisign-grs.com 2026-08-16 #1 | ||||||
PTR for
Previously NS for
Subdomains
Same first word
Similar names
DNS History
11 records (5 active, 6 former)
●NSa.registrydns.co2026-02-16 → 2026-08-16 · 3 obs
● 2026-02-16 16:56:28
● 2026-08-16 19:43:38
●NSb.registrydns.co2026-02-16 → 2026-08-16 · 3 obs
● 2026-02-16 16:56:28
● 2026-08-16 19:43:38
●NSc.registrydns.co2026-02-16 → 2026-08-16 · 3 obs
● 2026-02-16 16:56:28
● 2026-08-16 19:43:38
●NSd.registrydns.co2026-02-16 → 2026-08-16 · 3 obs
● 2026-02-16 16:56:28
● 2026-08-16 19:43:38
●NSns0.centralnic.net2026-02-16 → 2026-08-16 · 39 obs
● 2026-02-16 16:56:28
● 2026-06-07 07:14:40
○ 2026-06-07 08:06:28
● 2026-06-07 08:52:14
● 2026-06-07 18:50:58
○ 2026-06-07 19:36:38
● 2026-06-07 20:32:06
● 2026-06-07 21:03:24
○ 2026-06-07 22:01:22
○ 2026-06-07 22:32:14
● 2026-06-08 00:22:32
● 2026-06-08 06:48:34
○ 2026-06-08 07:31:14
○ 2026-06-08 08:26:24
● 2026-06-08 09:19:56
● 2026-06-08 12:15:22
○ 2026-06-08 12:52:40
● 2026-06-08 13:37:54
● 2026-06-08 14:07:56
○ 2026-06-08 15:01:28
● 2026-06-08 15:49:24
● 2026-06-08 19:13:22
○ 2026-06-08 19:51:54
● 2026-06-08 20:39:44
● 2026-06-10 17:27:52
○ 2026-06-10 18:22:48
● 2026-06-10 18:54:46
● 2026-06-10 21:37:28
○ 2026-06-10 22:09:52
● 2026-06-10 23:14:52
● 2026-06-11 03:02:58
○ 2026-06-11 03:38:56
● 2026-06-11 04:42:42
● 2026-06-16 14:41:56
○ 2026-06-16 15:32:52
○ 2026-06-16 16:51:10
● 2026-06-16 17:23:20
● 2026-08-16 19:43:38
○NSns1.cctld.co2015-09-04 → 2022-01-12 · 4 obs
● 2022-01-12 15:34:32
○ 2026-02-16 16:56:28
○ 2026-08-16 19:43:38
○NSns2.cctld.co2015-09-04 → 2022-01-12 · 4 obs
● 2022-01-12 15:34:32
○ 2026-02-16 16:56:28
○ 2026-08-16 19:43:38
○NSns3.cctld.co2015-09-04 → 2022-01-12 · 4 obs
● 2022-01-12 15:34:32
○ 2026-02-16 16:56:28
○ 2026-08-16 19:43:38
○NSns4.cctld.co2015-09-04 → 2022-01-12 · 4 obs
● 2022-01-12 15:34:32
○ 2026-02-16 16:56:28
○ 2026-08-16 19:43:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| co | a.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co | - |
✅ Authoritative Response
Server:212.18.248.57
NS records: a.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 130ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | a.registrydns.co, b.registrydns.co... |
| SOA | 1 | ns0.centralnic.net hostmaster.centralnic |
Analysis
Hierarchy
The domain co is the parent of mybgi.co, becquer.co, cssjs.co, mattei.co, t3rsc.co and hundreds of thousands of other host names.
Name Servers
co has five name servers, which are a.registrydns.co, b.registrydns.co, c.registrydns.co and two others.
There is at least partial name server overlap between co and other domains — hu.net, jnj, ru.com and two more among them.
These name servers regularly appear alongside ns0.centralnic.net, ns1.centralnic.net, ns2.centralnic.net and 7 other name servers in NS record sets.
Hosts that point to four IP numbers:
ns0.centralnic.net resolves to four IP addresses — 54.217.78.230, 63.34.52.177, 2a05:d018:4a2:c101::150 and 2a05:d018:4a2:c102::150.
Hostnames that resolve to two IP addresses:
a.registrydns.co points to 194.169.218.57 and 2001:67c:13cc::1:57.
b.registrydns.co points to 185.24.64.57 and 2a04:2b00:13cc::1:57.
c.registrydns.co points to 212.18.248.57 and 2a04:2b00:13ee::57.
d.registrydns.co points to 212.18.249.57 and 2a04:2b00:13ff::57.