ac.edu.vn - robtex.com

ac.edu.vn

DNSSEC⚠️ Not signed
A103.77.162.9🇻🇳 SUPERDATA103.77.162.0/24 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
PTRjackson.maychu.cloud
NSns1.pavietnam.vn ⭐
A2406:9c80::66🇻🇳 SUPERDATA2406:9c80::/48 -VN
PTRns1.dotvndns.vn
A112.213.89.3🇻🇳 SUPERDATA112.213.89.0/24 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
PTRns1.dotvndns.vn
NSns2.pavietnam.vn
A2406:9c80::9000:111🇻🇳 SUPERDATA2406:9c80::/48 -VN
PTRns2.dotvndns.vn
A222.255.121.247🇻🇳 VDC222.255.121.0/24 VNPT
PTRstatic.vdc.vn
PTRstatic.vnpt.vn
NSnsbak.pavietnam.net
A2406:9c80::9000:302🇻🇳 SUPERDATA2406:9c80::/48 -VN
PTRnsbak.dotvndns.com
A112.213.89.22🇻🇳 SUPERDATA112.213.89.0/24 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
PTRns8922.dotvndns.vn
MXac-edu-vn.mail.protection.outlook.com ⭐
A2a01:111:f403:cc09::🇸🇬 Microsoft2a01:111:f000::/36
PTRmail-sg2pr03cu00500.inbound.protection.outlook.com
A2a01:111:f403:cc1a::8🇯🇵 Microsoft2a01:111:f000::/36
PTRmail-tydpr03cu00100.inbound.protection.outlook.com
A2a01:111:f403:cc1f::4🇯🇵 Microsoft2a01:111:f000::/36
PTRmail-os8pr02cu00104.inbound.protection.outlook.com
A52.101.124.117🇯🇵 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-tydpr03cu00105.inbound.protection.outlook.com
A52.101.137.0🇸🇬 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-sg2pr03cu00500.inbound.protection.outlook.com
A52.101.157.80🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-os8pr02cu00100.inbound.protection.outlook.com
TXTv=spf1 include:spf.protection.outlook.com -all
TXTMS=ms15712056
SOAns1.pavietnam.vnhostmaster@ac.edu.vn 2025-12-29 #11

edu.vn

DNSSEC⚠️ Not signed
NSdns-master.vnnic.vn ⭐
NSa.dns-servers.vn ⚠️ Not in parent delegation
NSb.dns-servers.vn ⚠️ Not in parent delegation
NSc.dns-servers.vn ⚠️ Not in parent delegation
NSd.dns-servers.vn ⚠️ Not in parent delegation
NSe.dns-servers.vn ⚠️ Not in parent delegation
NSf.dns-servers.vn ⚠️ Not in parent delegation
NSg.dns-servers.vn ⚠️ Not in parent delegation
NSh.dns-servers.vn ⚠️ Not in parent delegation
SOAdns-master.vnnic.vnpostmaster@vnnic.vn serial=2018562877

Subdomains

www.ac.edu.vn

Same first word

ac.id
ac.sc
ac.me
ac.co
ac.edu.au
ac.cy
ac.mz
ac.university
ac.com.pl
ac.kharkov.ua
ac.co.il
ac.mn
ac.in.ua
ac.edgekey.net
ac.company
ac.in
ac.gov.ru
ac.ma
ac.edu.vn
ac.kz
ac.mt
ac.com.py
ac.co.nz
ac.kr
ac.com.ro
ac.ls
ac.or.kr
ac.pl
ac.cl
ac.com.ua
ac.dev
ac.run
ac.bz
ac.s3-website-us-east-1.amazonaws.com
ac.co.in
ac.donetsk.ua
ac.cz
ac.am
ac.lk
ac.cm
ac.la
ac.ru
ac.life
ac.gd
ac.repair
ac.leg.br
ac.si
ac.ua
ac.msk.su
ac.s3-ap-northeast-1.amazonaws.com
ac.cr
ac.tn
ac.zone
ac.supply
ac.care
ac.vu
ac.cn
ac.fun
ac.net.ru
ac.com
ac.no
ac.adobeio-static.net
ac
ac.ac.nz
ac.by
ac.st
ac.org.br
ac.gov.br
ac.cat
ac.amsterdam
ac.edu
ac.mw
ac.gr
ac.com.kw
ac.de
ac.olsztyn.pl
ac.ac.cy
ac.co.at
ac.ae
ac.gt
ac.edu.pl
ac.ink
ac.com.ar
ac.net.pl
ac.com.au
ac.tz
ac.vc
ac.rs.gov.br
ac.game
ac.edu.ph
ac.cc
ac.be
ac.je
ac.abbott
ac.il
ac.pa
ac.bialystok.pl
ac.lv
ac.news
ac.rs

Similar names

ca.land
ca.com
ca.com.au
ca.myshopify.com
ca.net.au
ca.co.th
ca.su
ca.tel
ca.support
ca.fyi
ca.ms
ca.hu
ca.pharmacy
ca.my
ca.inf.br
ca.cloudns.us
ca.ie
ca.lt
ca.com.lb
ca.bz.it
ca.ag
ca.sk
ca.global.prod.fastly.net
ca.company
ca.vodka
ca.gs
ca.s3-website.ca-central-1.amazonaws.com
ca
ca.la
ca.sh
ca.cc
ca.vin
ca.am
ca.biz
ca.pt
ca.vc
ca.us.com
ca.com.br
ca.marketing
ca.s3.amazonaws.com
ca.co
ca.uk
ca.digital
ca.net.co
ca.cl

DNS History

5 records (5 active, 0 former)

NSns1.pavietnam.vnns2.pavietnam.vnnsbak.pavietnam.netMXac-edu-vn.mail.protection.outlook.comA103.77.162.9
●NSns1.pavietnam.vn2026-05-01 → 2026-05-01 · 2 obs
● 2026-05-01 00:32:14
● 2026-05-01 21:36:28
●NSns2.pavietnam.vn2026-05-01 → 2026-05-01 · 2 obs
● 2026-05-01 00:32:14
● 2026-05-01 21:36:28
●NSnsbak.pavietnam.net2026-05-01 → 2026-05-01 · 2 obs
● 2026-05-01 00:32:14
● 2026-05-01 21:36:28
●MXac-edu-vn.mail.protection.outlook.com2026-05-01 → 2026-05-01 · 2 obs
● 2026-05-01 00:32:14
● 2026-05-01 21:36:28
●A103.77.162.92026-05-01 → 2026-05-01 · 2 obs
● 2026-05-01 00:32:14
● 2026-05-01 21:36:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
vna.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn...16 records
ac.edu.vnns2.pavietnam.vn, ns1.pavietnam.vn, nsbak.pavietnam.net-

✅ Authoritative Response

Server:222.255.121.247

NS records: ns2.pavietnam.vn, ns1.pavietnam.vn, nsbak.pavietnam.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ac.edu.vn (unsigned zone)

⏱️ Timing

Total: 2162ms | Queries: -

📄 Records

TypeCountSample Data
A1103.77.162.9
NS3ns2.pavietnam.vn, ns1.pavietnam.vn...
MX1ac-edu-vn.mail.protection.outlook.com (p
TXT2v=spf1 include:spf.protection.outlook.co, MS=ms15712056
SOA1ns1.pavietnam.vn hostmaster.ac.edu.vn

📌 Glue Records Collected

Total: 16

In-bailiwick: 16 (a.dns-servers.vn, a.dns-servers.vn, b.dns-servers.vn...)

Analysis

Hierarchy

The parent of www.ac.edu.vn is ac.edu.vn.

IP Addresses

ac.edu.vn points to a single IP address: 103.77.162.9.

Other host names such as webmail.365energy.vn, caydeban.com.vn, dthtech.vn, www.tuyetmai.com.vn and cpcontacts.365energy.vn share IPs with ac.edu.vn.

Name Servers

ac.edu.vn is delegated to three name servers: nsbak.pavietnam.net, ns1.pavietnam.vn and ns2.pavietnam.vn.

ac.edu.vn at least partially shares name servers with other domains, for example garaotoquan7.com, phunongseeds.com, efavietnam.com, quocbao245.id.vn and dietmoisieutoc.com.

These name servers are often used with ns1.dotvndns.vn, ns2.dotvndns.vn, nsbak.dotvndns.com, nsbak.pavietnam.vn and dnsbak.pavietnam.vn.

Host names with two IP numbers:

nsbak.pavietnam.net points to 2406:9c80::9000:302 and 112.213.89.22

ns1.pavietnam.vn points to 2406:9c80::66 and 112.213.89.3

ns2.pavietnam.vn points to 2406:9c80::9000:111 and 222.255.121.247

Mail Servers

The ac-edu-vn.mail.protection.outlook.com mail server handles ac.edu.vn.

Host name ac-edu-vn.mail.protection.outlook.com resolves to six IP numbers: 2a01:111:f403:cc09::, 2a01:111:f403:cc1a::8, 2a01:111:f403:cc1f::4, 52.101.124.117, 52.101.137.0 and 52.101.157.80.