`mail.cotuongup.vn`

CNAME	`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}
MX	`cotuongup.vn` ⭐
		A	45.252.248.16^{🇻🇳 AZDIGI-AS-VN45.252.248.0/22 AZDIGI-VN}
SOA	`ns1.zonedns.vn`root@cotuongup.vn 2026-04-07 #2

`cotuongup.vn`

	DNSSEC	⚠️ Not signed
	A	45.252.248.16^{🇻🇳 AZDIGI-AS-VN45.252.248.0/22 AZDIGI-VN}
	NS	`ns1.zonedns.vn` ⭐
	NS	`cotuongup.vn` ⚠️ Not in zone NS records
	NS	`ns2.zonedns.vn`
	NS	`ns3.zonedns.vn`
	NS	`ns4.zonedns.vn`
	MX	`cotuongup.vn` ⭐
	SOA	`ns1.zonedns.vn`root@cotuongup.vn 2026-04-07 #2

Previously MX for

cotuongup.vn

Same first word

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DNS History

3 records (2 active, 1 former)

○A125.212.248.1442019-01-04 → 2019-01-04 · 3 obs

● 2019-01-04 02:44:18
○ 2026-05-03 02:56:00
○ 2026-05-10 08:39:02

●A45.252.248.162026-05-03 → 2026-05-10 · 3 obs

○ 2019-01-04 02:44:18
● 2026-05-03 02:56:00
● 2026-05-10 08:39:02

●CNAMEcotuongup.vn2026-05-03 → 2026-05-10 · 2 obs

● 2026-05-03 02:56:00
● 2026-05-10 08:39:02

🔍 DNS Trace

Analysis

IP Addresses

mail.cotuongup.vn points to a single IP: 45.252.248.16.

Other host names, for instance mail.phongkhamtamphuc.vn, bb.ccc.dddd.hoaiphuonghsk.quiz.edu.vn, www.quantrihocvien.hanoilink.quiz.edu.vn, wbsubdomain.a.bb.ccc.dddd.hsk.quiz.edu.vn and www.thenaturarts.com.anchorrestaurant.vn share IP numbers with mail.cotuongup.vn.

Name Servers

mail.cotuongup.vn is delegated to five name servers: cotuongup.vn, ns1.zonedns.vn, ns2.zonedns.vn, ns3.zonedns.vn and ns4.zonedns.vn.

mail.cotuongup.vn partially shares name servers with other domains; examples include noithatcuoi.com, inhalong.com, thuephongdaotao.com, tamoanh.vn and greeninvietnam.org.vn.

These name servers are often used with the name servers ns2008.nhanhoa.com.vn and ns2009.nhanhoa.com.vn.

Host names with two IP numbers:

ns1.zonedns.vn points to: 2401:c080:1400:1cd4:5400:5ff:fe80:ec33 and 64.176.84.220

ns2.zonedns.vn points to: 2401:c080:1400:1cd4:5400:5ff:fe80:ec33 and 103.176.178.51

ns3.zonedns.vn points to: 2001:df1:3200::15 and 103.28.36.30

ns4.zonedns.vn points to: 2001:df1:3200::15 and 103.28.39.159

Host names with one IP number:

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

Mail Servers

mail.cotuongup.vn is handled by a single mail server, cotuongup.vn.

mail.cotuongup.vn uses the same mail server setup as other domains, for example cotuongup.vn.

mail.cotuongup.vn - robtex.com