cothk.com - dns.ninja
cothk.com
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1786458079 | ||||||
Subdomains
Same first word
cothk.com |
Similar names
DNS History
14 records (10 active, 4 former)
○NSdns030.a.register.com2015-08-04 → 2017-08-28 · 4 obs
● 2017-08-28 22:50:06
○ 2026-02-15 16:39:00
○ 2026-08-11 14:47:58
●NSdns101.register.com2026-02-15 → 2026-08-11 · 3 obs
● 2026-02-15 16:39:00
● 2026-08-11 14:47:58
●NSdns102.register.com2026-02-15 → 2026-08-11 · 3 obs
● 2026-02-15 16:39:00
● 2026-08-11 14:47:58
○NSdns123.b.register.com2015-08-04 → 2017-08-28 · 4 obs
● 2017-08-28 22:50:06
○ 2026-02-15 16:39:00
○ 2026-08-11 14:47:58
○NSdns227.c.register.com2015-08-04 → 2017-08-28 · 4 obs
● 2017-08-28 22:50:06
○ 2026-02-15 16:39:00
○ 2026-08-11 14:47:58
○NSdns249.d.register.com2015-08-04 → 2017-08-28 · 4 obs
● 2017-08-28 22:50:06
○ 2026-02-15 16:39:00
○ 2026-08-11 14:47:58
●MXalt1.aspmx.l.google.com2015-08-04 → 2026-08-11 · 2 obs
● 2026-08-11 14:47:58
●MXalt2.aspmx.l.google.com2015-08-04 → 2026-08-11 · 2 obs
● 2026-08-11 14:47:58
●MXaspmx.l.google.com2015-08-04 → 2026-08-11 · 2 obs
● 2026-08-11 14:47:58
●MXaspmx2.googlemail.com2015-08-04 → 2026-08-11 · 2 obs
● 2026-08-11 14:47:58
●MXaspmx3.googlemail.com2015-08-04 → 2026-08-11 · 2 obs
● 2026-08-11 14:47:58
●MXaspmx4.googlemail.com2015-08-04 → 2026-08-11 · 2 obs
● 2026-08-11 14:47:58
●MXaspmx5.googlemail.com2015-08-04 → 2026-08-11 · 2 obs
● 2026-08-11 14:47:58
●A218.213.244.112015-08-04 → 2026-08-11 · 2 obs
● 2026-08-11 14:47:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| cothk.com | dns101.register.com, dns102.register.com | 2 records |
✅ Authoritative Response
Server:162.159.24.117
NS records: dns101.register.com, dns102.register.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cothk.com (unsigned zone)
⏱️ Timing
Total: 319ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 218.213.244.11 |
| NS | 2 | dns101.register.com, dns102.register.com |
| MX | 7 | aspmx.l.google.com (pri: 0), alt1.aspmx.l.google.com (pri: 5)... |
| SOA | 1 | DNS101.REGISTER.com root.REGISTER.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (dns101.register.com, dns102.register.com)
Analysis
Hierarchy
mail.cothk.com and ns01.cothk.com are both subdomains of cothk.com.
IP Addresses
cothk.com resolves to one IP address: 218.213.244.11.
Other host names share IP numbers with cothk.com; ceontech.com is one such example.
Name Servers
cothk.com is served by two delegated name servers, dns101.register.com and dns102.register.com.
cothk.com uses the same name servers as several other domains — among them blastlyme.org, ahcstaff.com, howdoyoujenga.com and two more.
dns101.register.com directs to 162.159.24.117 and dns102.register.com directs to 162.159.25.158; each host name points to exactly one IP number.
Mail Servers
Mail for cothk.com is routed through 7 mail servers, including aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and 4 other.
cothk.com has at least partial mail server overlap with other domains such as ozball.com.au, ns500599.ns500724.ns500737.ns500737.ns500724.ns500737.ns500724.ns500724.ns500599.ns500697.ns500682.ns500669.www.yummyflingsfinder.com, elmahrek.com and two more.
These mail servers commonly co-occur with mail servers aspmx.l.google.com, alt2.aspmx.l.google.com, alt1.aspmx.l.google.com and 3 others.
Hostnames that resolve to two IP addresses:
aspmx2.googlemail.com maps to two IP addresses — 192.178.234.26 and 2800:3f0:4003:c14::1a.
aspmx3.googlemail.com maps to two IP addresses — 172.253.116.26 and 2a00:1450:400b:c02::1b.
aspmx4.googlemail.com maps to two IP addresses — 192.178.223.27 and 2a00:1450:4009:c0f::1b.
aspmx5.googlemail.com maps to two IP addresses — 172.253.157.26 and 2a00:1450:400c:c23::1a.
aspmx.l.google.com maps to two IP addresses — 172.253.122.27 and 2607:f8b0:4004:c29::1a.
alt1.aspmx.l.google.com maps to two IP addresses — 192.178.234.27 and 2800:3f0:4003:c14::1a.
alt2.aspmx.l.google.com maps to two IP addresses — 172.253.116.27 and 2a00:1450:400b:c02::1b.
These two host names — aspmx2.googlemail.com and alt1.aspmx.l.google.com — each point to 2800:3f0:4003:c14::1a IP addresses.
These two host names — aspmx3.googlemail.com and alt2.aspmx.l.google.com — each point to 2a00:1450:400b:c02::1b IP addresses.