`mail.simpleedu.vn`

DNSSEC	⚠️ Not signed
A	45.117.171.77^{🇻🇳 SUPERDATA45.117.171.0/24 Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 24th floor, VNTA Tower, Duong Dinh Nghe, Cau Giay, Hanoi}
		PTR	`mx17177.superdata.vn`

`simpleedu.vn`

	DNSSEC	⚠️ Not signed
	A	45.117.171.77^{🇻🇳 SUPERDATA45.117.171.0/24 Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 24th floor, VNTA Tower, Duong Dinh Nghe, Cau Giay, Hanoi}
	NS	`nsbak.dotvndns.com` ⭐
	NS	`ns1.dotvndns.vn`
	NS	`ns2.dotvndns.vn`
	NS	`ns3.dotvndns.vn`
	MX	`mail.simpleedu.vn` ⭐
	TXT	`v=spf1 a mx ~all`
	SOA	`nsbak.dotvndns.com`hostmaster@simpleedu.vn 2026-04-20 #5

MX for

simpleedu.vn

Same first word

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DNS History

1 record (1 active, 0 former)

●A45.117.171.772026-05-12 → 2026-05-13 · 2 obs

● 2026-05-12 07:40:28
● 2026-05-13 03:19:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	c.dns-servers.vn, a.dns-servers.vn, e.dns-servers.vn, g.dns-servers.vn...	-
simpleedu.vn	ns2.dotvndns.vn, ns3.dotvndns.vn, nsbak.dotvndns.com, ns1.dotvndns.vn	4 records

✅ Authoritative Response

Server:222.255.121.247

NS records: ns2.dotvndns.vn, ns3.dotvndns.vn, nsbak.dotvndns.com, ns1.dotvndns.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for simpleedu.vn (unsigned zone)

⏱️ Timing

Total: 4679ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`45.117.171.77`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns2.dotvndns.vn, ns1.dotvndns.vn, ns2.dotvndns.vn...)

Analysis

Mail Server Role

mail.simpleedu.vn handles mail for simpleedu.vn.

IP Addresses

mail.simpleedu.vn points to a single IP address: 45.117.171.77.

Other host names such as mail.noithatthuytien.com, vitinhnguyenthang.com, vienlaptop.vn, mail.vitinhnguyenthang.com and www.vitinhnguyenthang.com share IPs with mail.simpleedu.vn.

mail.simpleedu.vn - robtex.com