`mail.htdengineering.vn`

CNAME	`pro25.emailserver.vn`
DNSSEC	⚠️ Not signed
A	103.110.129.125^{🇻🇳 AXYS-VN103.110.128.0/23}
		PTR	`pro25.emailserver.vn`

`htdengineering.vn`

	DNSSEC	⚠️ Not signed
	A	112.78.2.88^{🇻🇳 ODS-AS-VN112.78.2.0/24 ODSJSC-VN}
	NS	`ns1.pavietnam.vn` ⭐
	NS	`ns1.dotvndns.vn`
	NS	`ns2.dotvndns.vn`
	NS	`nsbak.dotvndns.com`
	MX	`pro25.emailserver.vn` ⭐
	TXT	`v=spf1 mx include:emailserver.vn include:spf.protection.outlook.com -all`
	SOA	`ns1.pavietnam.vn`hostmaster@htdengineering.vn 2025-12-02 #13

Previously MX for

htdengineering.vn

Same first word

mail.edu.tw

mail.dnsalias.net

mail.pro.br

mail.ne.jp

mail.co.jp

mail.be

mail.com.vn

mail.how

mail.in-brb.de

mail.ro

mail.com.hk

mail.neustar

mail.ao

mail.pw

mail.broker

mail.school

mail.land

mail.yahoo

mail.edu.ge

mail.ps

mail.edu.ee

mail.gouv.ci

mail.gi

mail.fr

mail.mil.id

mail.k12.vt.us

mail.photos

mail.omg.lol

mail.ooo

mail.cloudaccess.net

mail.girly.jp

mail.ec

mail.blog

mail.potager.org

mail.v.ua

mail.copro.uk

mail.or.id

mail.kim

mail.md

mail.gov.ls

mail.edu.tt

mail.si

mail.gov.rw

mail.gov.bs

mail.ca

mail.je

mail.ks.ua

mail.org.br

mail.technology

mail.edu.ru

mail.edu.az

mail.global

mail.bambina.jp

mail.hu.net

mail.whitesnow.jp

mail.se

mail.keymachine.de

mail.gd

mail.ms.gov.br

mail.csx.cc

mail.basicserver.io

mail.coupons

mail.js.org

mail.ch

mail.partners

mail.mt

mail.golffan.us

mail.town

mail.sh

mail.nom.za

mail.com.br

mail.com.ph

mail.co.ua

mail.bike

mail.gr

mail.srv.br

mail.dyn-vpn.de

mail.serveminecraft.net

mail.gov.cn

mail.staba.jp

mail.pinoko.jp

mail.in.th

mail.tech

mail.rakkestad.no

mail.gov.bm

mail.com.py

mail.guru

mail.bing

mail.lv

mail.babyblue.jp

mail.in-berlin.de

mail.no-ip.biz

mail.host

mail.net.ar

mail.management

mail.qld.gov.au

mail.pm

mail.wf

mail.ltd

mail.com.pe

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DNS History

3 records (1 active, 2 former)

○MX123.30.108.542018-08-07 → 2018-08-07 · 2 obs

● 2018-08-07 10:00:50
○ 2026-05-10 04:58:26

○A103.15.48.1742018-08-07 → 2018-08-07 · 2 obs

● 2018-08-07 10:00:50
○ 2026-05-10 04:58:26

●CNAMEpro25.emailserver.vn2026-05-10 → 2026-05-10 · 1 obs

● 2026-05-10 04:58:26

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:222.255.121.247

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for htdengineering.vn (unsigned zone)

⏱️ Timing

Total: 2147ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`pro25.emailserver.vn`

📌 Glue Records Collected

Total: 4

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

Analysis

IP Addresses

mail.htdengineering.vn maps to IP address 103.110.129.125.

Other host names, for example, pro25.emailserver.vn share IP numbers with mail.htdengineering.vn.

mail.htdengineering.vn - robtex.com