co - robtex.com
co
(root)
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.root-servers.net ⭐ ⚠️ Not in parent delegation | ||||||
| NS | b.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | c.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | d.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | e.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | f.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | g.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | h.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | i.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | j.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | k.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | l.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | m.root-servers.net ⚠️ Not in parent delegation | ||||||
| SOA | a.root-servers.netnstld@verisign-grs.com 2026-04-23 #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 → 2026-04-24 · 3 obs
● 2026-02-16 16:56:28
● 2026-04-24 04:51:38
●NSb.registrydns.co2026-02-16 → 2026-04-24 · 3 obs
● 2026-02-16 16:56:28
● 2026-04-24 04:51:38
●NSc.registrydns.co2026-02-16 → 2026-04-24 · 3 obs
● 2026-02-16 16:56:28
● 2026-04-24 04:51:38
●NSd.registrydns.co2026-02-16 → 2026-04-24 · 3 obs
● 2026-02-16 16:56:28
● 2026-04-24 04:51:38
●NSns0.centralnic.net2026-02-16 → 2026-04-24 · 3 obs
● 2026-02-16 16:56:28
● 2026-04-24 04:51:38
○NSns1.cctld.co2015-09-04 → 2022-01-12 · 4 obs
● 2022-01-12 15:34:32
○ 2026-02-16 16:56:28
○ 2026-04-24 04:51:38
○NSns2.cctld.co2015-09-04 → 2022-01-12 · 4 obs
● 2022-01-12 15:34:32
○ 2026-02-16 16:56:28
○ 2026-04-24 04:51:38
○NSns3.cctld.co2015-09-04 → 2022-01-12 · 4 obs
● 2022-01-12 15:34:32
○ 2026-02-16 16:56:28
○ 2026-04-24 04:51:38
○NSns4.cctld.co2015-09-04 → 2022-01-12 · 4 obs
● 2022-01-12 15:34:32
○ 2026-02-16 16:56:28
○ 2026-04-24 04:51:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| co | b.registrydns.co, a.registrydns.co, d.registrydns.co, c.registrydns.co | - |
✅ Authoritative Response
Server:212.18.248.57
NS records: b.registrydns.co, a.registrydns.co, d.registrydns.co, c.registrydns.co
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 206ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | a.registrydns.co, b.registrydns.co... |
| SOA | 1 | ns0.centralnic.net hostmaster.centralnic |
Analysis
Hierarchy
co is the parent of mybgi.co, becquer.co, mattei.co, ereforce.co, t3rsc.co and hundreds of thousands of other host names.
Name Servers
co is delegated to five name servers: a.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co and ns0.centralnic.net.
co partially shares name servers with other domains; examples include hu.net, jnj, ru.com, co.nl and centralnic.com.
These name servers are commonly used alongside ns1.centralnic.net, ns2.centralnic.net, ns3.centralnic.net, ns4.centralnic.net, a.nic.fm, b.nic.fm, c.nic.fm, d.nic.fm, e.nic.fm and f.nic.fm.
Host names with four IP numbers:
The host name ns0.centralnic.net points to: 2a05:d018:4a2:c101::150, 2a05:d018:4a2:c102::150, 54.217.78.230 and 63.34.52.177.
Host names with two IP numbers:
a.registrydns.co points to 2001:67c:13cc::1:57 and 194.169.218.57; b.registrydns.co points to 2a04:2b00:13cc::1:57 and 185.24.64.57; c.registrydns.co points to 2a04:2b00:13ee::57 and 212.18.248.57; d.registrydns.co points to 2a04:2b00:13ff::57 and 212.18.249.57.