cotuongup.vn - robtex.com
cotuongup.vn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 45.252.248.16🇻🇳 AZDIGI-AS-VN45.252.248.0/22 AZDIGI-VN | ||||||
| NS | ns1.zonedns.vn ⭐ | ||||||
| A | 2401:c080:1400:1cd4:5400:5ff:fe80:ec33🇸🇬 AS-VULTR2401:c080:1400::/38 Vultr Assigned Prefix | ||||||
| A | 64.176.84.220🇸🇬 AS-VULTR64.176.80.0/20 Vultr Assigned Prefix | ||||||
| PTR | ns1.zonedns.vn | ||||||
| NS | cotuongup.vn ⚠️ Not in zone NS records | ||||||
| A | 45.252.248.16🇻🇳 AZDIGI-AS-VN45.252.248.0/22 AZDIGI-VN | ||||||
| NS | ns2.zonedns.vn | ||||||
| A | 2401:c080:1400:1cd4:5400:5ff:fe80:ec33🇸🇬 AS-VULTR2401:c080:1400::/38 Vultr Assigned Prefix | ||||||
| A | 103.176.178.51🇻🇳 NHAN-HOA-AS-VN103.176.178.0/24 NINETECH-VN | ||||||
| NS | ns3.zonedns.vn | ||||||
| A | 2001:df1:3200::15🇻🇳 NHAN-HOA-AS-VN2001:df1:3200::/48 NHANHOA-VN | ||||||
| A | 103.28.36.30🇻🇳 NHAN-HOA-AS-VN103.28.36.0/22 NHANHOA-VN | ||||||
| NS | ns4.zonedns.vn | ||||||
| A | 2001:df1:3200::15🇻🇳 NHAN-HOA-AS-VN2001:df1:3200::/48 NHANHOA-VN | ||||||
| A | 103.28.39.159🇻🇳 NHAN-HOA-AS-VN103.28.36.0/22 NHANHOA-VN | ||||||
| SOA | ns1.zonedns.vnroot@cotuongup.vn 2026-04-07 #2 | ||||||
vn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | dns-master.vnnic.vn ⭐ | ||||||
| NS | a.dns-servers.vn | ||||||
| NS | b.dns-servers.vn | ||||||
| NS | c.dns-servers.vn | ||||||
| NS | d.dns-servers.vn | ||||||
| NS | e.dns-servers.vn | ||||||
| NS | f.dns-servers.vn | ||||||
| NS | g.dns-servers.vn | ||||||
| NS | h.dns-servers.vn | ||||||
| SOA | dns-master.vnnic.vnpostmaster@vnnic.vn serial=2030753670 | ||||||
NS for
cotuongup.vn |
Previously MX for
cotuongup.vn |
Subdomains
mail.cotuongup.vn |
Same first word
cotuongup.com |
cotuongup.vn |
DNS History
13 records (6 active, 7 former)
●NScotuongup.vn2026-05-03 → 2026-05-10 · 3 obs
● 2026-05-03 02:56:02
● 2026-05-10 02:19:12
○NSns1.pavietnam.vn2019-01-04 → 2019-01-04 · 3 obs
○ 2026-05-03 02:56:02
○ 2026-05-10 02:19:12
●NSns1.zonedns.vn2026-05-03 → 2026-05-10 · 3 obs
● 2026-05-03 02:56:02
● 2026-05-10 02:19:12
○NSns2.pavietnam.vn2019-01-04 → 2019-01-04 · 3 obs
○ 2026-05-03 02:56:02
○ 2026-05-10 02:19:12
●NSns2.zonedns.vn2026-05-03 → 2026-05-10 · 3 obs
● 2026-05-03 02:56:02
● 2026-05-10 02:19:12
○NSns3.azdigi.com2026-05-03 → 2026-05-09 · 12 obs
● 2026-05-03 02:56:02
● 2026-05-06 13:41:32
○ 2026-05-06 16:28:32
○ 2026-05-07 04:08:20
● 2026-05-07 12:22:08
○ 2026-05-07 13:30:58
○ 2026-05-08 18:57:14
● 2026-05-09 11:29:12
● 2026-05-09 17:44:18
○ 2026-05-10 02:19:10
○ 2026-05-10 02:19:12
●NSns3.zonedns.vn2026-05-03 → 2026-05-10 · 3 obs
● 2026-05-03 02:56:02
● 2026-05-10 02:19:12
○NSns4.azdigi.com2026-05-06 → 2026-05-09 · 11 obs
● 2026-05-06 13:41:32
○ 2026-05-06 16:28:32
○ 2026-05-07 04:08:20
● 2026-05-07 12:22:08
○ 2026-05-07 13:30:58
○ 2026-05-08 18:57:14
● 2026-05-09 11:29:12
● 2026-05-09 17:44:18
○ 2026-05-10 02:19:10
○ 2026-05-10 02:19:12
●NSns4.zonedns.vn2026-05-03 → 2026-05-10 · 3 obs
● 2026-05-03 02:56:02
● 2026-05-10 02:19:12
○MXcotuongup.vn2026-05-03 → 2026-05-03 · 4 obs
● 2026-05-03 02:56:02
○ 2026-05-06 13:41:32
○ 2026-05-10 02:19:12
○MXmail.cotuongup.vn2019-01-04 → 2019-01-04 · 3 obs
○ 2026-05-03 02:56:02
○ 2026-05-10 02:19:12
○A125.212.248.1442019-01-04 → 2019-01-04 · 3 obs
○ 2026-05-03 02:56:02
○ 2026-05-10 02:19:12
●A45.252.248.162026-05-03 → 2026-05-10 · 3 obs
● 2026-05-03 02:56:02
● 2026-05-10 02:19:12
🔍 DNS Trace
Analysis
Hierarchy
cotuongup.vn is a parent of mail.cotuongup.vn.
Name Server Role
cotuongup.vn serves as a name server for cotuongup.vn.
Typically, ns1.zonedns.vn, ns2.zonedns.vn and ns3.zonedns.vn serve as name servers alongside cotuongup.vn.
IP Addresses
cotuongup.vn points to a single IP number: 45.252.248.16.
Other host names, for instance www.quiz.edu.vn, diengiadaominhchau.myphammagicskin.vn, ttdt.hanoilink.quiz.edu.vn, glexpress.com.vn.nhacuavuong.com and bb.ccc.dddd.www.english.quiz.edu.vn share IP numbers with cotuongup.vn.
Name Servers
cotuongup.vn is delegated to five name servers: cotuongup.vn, ns1.zonedns.vn, ns2.zonedns.vn, ns3.zonedns.vn and ns4.zonedns.vn.
cotuongup.vn at least partially shares name servers with other domains, for instance graphickey.vn, polyfill.com.vn, otoanphuoc.com, dalatacademy.edu.vn and vrarsky.com.
These name servers are commonly used with ns2008.nhanhoa.com.vn and ns2009.nhanhoa.com.vn.
Host names with two IP numbers:
The host name ns1.zonedns.vn points to: 2401:c080:1400:1cd4:5400:5ff:fe80:ec33 and 64.176.84.220.
The host name ns2.zonedns.vn points to: 2401:c080:1400:1cd4:5400:5ff:fe80:ec33 and 103.176.178.51.
The host name ns3.zonedns.vn points to: 2001:df1:3200::15 and 103.28.36.30.
The host name ns4.zonedns.vn points to: 2001:df1:3200::15 and 103.28.39.159.
Host names with one IP number:
The host name cotuongup.vn points to: 45.252.248.16.
Host names that point to 2401:c080:1400:1cd4:5400:5ff:fe80:ec33 : ns1.zonedns.vn and ns2.zonedns.vn.
Host names that point to 2001:df1:3200::15 : ns3.zonedns.vn and ns4.zonedns.vn.