ck.edu.vn - robtex.com
ck.edu.vn
edu.vn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | dns-master.vnnic.vn ⭐ | ||||||
| NS | a.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | b.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | c.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | d.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | e.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | f.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | g.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | h.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| SOA | dns-master.vnnic.vnpostmaster@vnnic.vn serial=2018564921 | ||||||
Subdomains
www.ck.edu.vn |
Same first word
Similar names
DNS History
11 records (7 active, 4 former)
●NSmatteo.ns.cloudflare.com2026-04-30 → 2026-05-11 · 2 obs
● 2026-05-11 02:47:04
●NSulla.ns.cloudflare.com2026-04-30 → 2026-05-11 · 2 obs
● 2026-05-11 02:47:04
●MXsmtp.google.com2026-04-30 → 2026-05-11 · 2 obs
● 2026-05-11 02:47:04
●A104.21.15.522026-04-30 → 2026-05-11 · 5 obs
● 2026-05-06 08:50:32
○ 2026-05-06 16:57:06
● 2026-05-09 17:50:28
● 2026-05-11 02:47:04
●A172.67.161.1822026-04-30 → 2026-05-11 · 5 obs
● 2026-05-06 08:50:32
○ 2026-05-06 16:57:06
● 2026-05-09 17:50:28
● 2026-05-11 02:47:04
○A188.114.96.02026-05-06 → 2026-05-06 · 4 obs
● 2026-05-06 16:57:06
○ 2026-05-09 17:50:28
○ 2026-05-11 02:47:04
○A188.114.97.02026-05-06 → 2026-05-06 · 4 obs
● 2026-05-06 16:57:06
○ 2026-05-09 17:50:28
○ 2026-05-11 02:47:04
●A2606:4700:3031::6815:f342026-04-30 → 2026-05-11 · 5 obs
● 2026-05-06 08:50:32
○ 2026-05-06 16:57:06
● 2026-05-09 17:50:28
● 2026-05-11 02:47:04
●A2606:4700:3031::ac43:a1b62026-04-30 → 2026-05-11 · 5 obs
● 2026-05-06 08:50:32
○ 2026-05-06 16:57:06
● 2026-05-09 17:50:28
● 2026-05-11 02:47:04
○A2a06:98c1:3120::2026-05-06 → 2026-05-06 · 4 obs
● 2026-05-06 16:57:06
○ 2026-05-09 17:50:28
○ 2026-05-11 02:47:04
○A2a06:98c1:3121::2026-05-06 → 2026-05-06 · 4 obs
● 2026-05-06 16:57:06
○ 2026-05-09 17:50:28
○ 2026-05-11 02:47:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| vn | a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn... | - |
| ck.edu.vn | ulla.ns.cloudflare.com, matteo.ns.cloudflare.com | - |
✅ Authoritative Response
Server:173.245.58.233
NS records: ulla.ns.cloudflare.com, matteo.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ck.edu.vn (unsigned zone)
⏱️ Timing
Total: 1211ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.15.52, 172.67.161.182 |
| AAAA | 2 | 2606:4700:3031::ac43:a1b6, 2606:4700:3031::6815:f34 |
| NS | 2 | matteo.ns.cloudflare.com, ulla.ns.cloudflare.com |
| MX | 1 | smtp.google.com (pri: 1) |
| TXT | 3 | MS=ms33359874, google-site-verification=FNf0xZxM7js704k... |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | matteo.ns.cloudflare.com dns.cloudflare. |
Analysis
Hierarchy
The parent of www.ck.edu.vn is ck.edu.vn.
IP Addresses
ck.edu.vn points to four IP numbers: 2606:4700:3031::6815:f34, 2606:4700:3031::ac43:a1b6, 104.21.15.52 and 172.67.161.182.
Other host names, for instance www.linuxploit.com, breathnatural.com, teglram.com, h0uw.855668.live and www.evolvedynamics.com share IP numbers with ck.edu.vn.
Name Servers
ck.edu.vn is delegated to two name servers: matteo.ns.cloudflare.com and ulla.ns.cloudflare.com.
ck.edu.vn uses the same name server setup as other domains, for instance luckicasinos.co.uk, adamiskandar.com, togelonlen.info, yeswelder.com and magyar-gyogyszertar.com.
ck.edu.vn shares name servers with other domains at least partially, for instance ommrealestate.com, secu.com, devensellscalgary.com, buttheiremails.com and onepercenthamiltonrealty.ca.
These name servers are often used with clay.ns.cloudflare.com, luciane.ns.cloudflare.com, ali.ns.cloudflare.com, eugene.ns.cloudflare.com and mckinley.ns.cloudflare.com.
Host names with six IP numbers: matteo.ns.cloudflare.com points to 2606:4700:58::a29f:2ce0, 2803:f800:50::6ca2:c3e0, 2a06:98c1:50::ac40:23e0, 108.162.195.224, 162.159.44.224 and 172.64.35.224; ulla.ns.cloudflare.com points to 2606:4700:50::adf5:3ae9, 2803:f800:50::6ca2:c0e9, 2a06:98c1:50::ac40:20e9, 108.162.192.233, 172.64.32.233 and 173.245.58.233.
Mail Servers
The mail server for ck.edu.vn is smtp.google.com.
ck.edu.vn shares the same mail server setup as other domains, including dragonspinners.com, uniwork.co.in, coesolution.com, abbynews.com and vtechdyno.pl.
ck.edu.vn shares some mail servers with other domains, including 3dlink.cc, sendboxsac.com, babypalace.nl, livingphxmetro.com and scenografiatematyczna.pl.
These mail servers are commonly used with alt1.aspmx.l.google.com and alt2.aspmx.l.google.com.
Hostname smtp.google.com points to nine IP numbers: 2607:f8b0:4004:c06::1a, 2607:f8b0:4004:c06::1b, 2607:f8b0:4004:c07::1a, 2607:f8b0:4004:c07::1b, 172.253.62.26, 172.253.62.27, 172.253.115.26, 172.253.115.27 and 172.253.122.26.