coa.org.vn - robtex.com

coa.org.vn

DNSSEC⚠️ Not signed
A103.173.226.154🇻🇳 INTERDIGI-VN103.173.226.0/23 INTERDATA-VN
NSns1.dotvndns.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.dotvndns.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
NSns3.dotvndns.vn
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
NSnsbak.dotvndns.com
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
SOAns1.dotvndns.vnhostmaster@coa.org.vn 2025-10-07 #11

org.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=2017789939
WOT: SAFE (99/100)

Subdomains

mail.coa.org.vn
cpcontacts.coa.org.vn
dddd.coa.org.vn
webdisk.coa.org.vn
www.coa.org.vn
hostmaster.coa.org.vn
website.coa.org.vn
webmail.coa.org.vn

Same first word

coa.ren
coa.services
coa.at
coa.co.jp
coa.mx
coa.net.cn
coa.biz
coa.in
coa.company
coa.de
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coa.info
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coa.ge
coa.dz
coa.ru
coa.com.ni
coa.org.uk
coa.pe
coa.gov.tw
coa.ir
coa.design
coa.com.hk
coa.rs
coa.as
coa.org
coa.me
coa.ie
coa.cz
coa.la
coa.gov.lb
coa.pp.ua
coa.es
coa.mobi
coa.edu
coa.us
coa.gov.in
coa.uk
coa.gg
coa.gov.hk
coa.us.com
coa.st
coa.co.uk
coa.dk
coa.com
coa.co
coa.gov.ph
coa.nl
coa.pl
coa.gov.ng
coa.vn
coa.ca
coa.gr

Similar names

aco.tn
oca.info
aco.com.ua
oac.bz
cao.io
oac.us
cao.biz
oca.nu
oca.be
oac.com.sg
oca.asia
oca.kasserver.com
oac.su
aco.co
aco.email
aoc.net
oca.go.th
oca.com.ve
oca.xyz
oca.cz
cao.sg
cao.pl
oca.biz
oca.com
aco.nu
aco.gr
aco.tv
cao.pt
oca.hu
aco.biz
oac.ca
aco.lu
aco.sd
oac.se
aco.is
aco.in.net
aoc.tel
cao.li
oca.kz
oca.engineering
oca.academy
oac.or.jp
oac.org
aco.id
aco.lt
aco.rs
aoc.nl
aco.ee
aco.eu
aco.com.au
aoc.su
aco.hu
cao.ro
aco.co.jp
oac.biz
aco.si
oca.no
aco.org
aco.mx
aoc.be
oac.gr
aco.com.uy
oca.co.in
oca.org.br
oca.guru
oca.es
aco.com.pe
oca.cn
cao.go.jp
aco.careers
aco.digital
oac.no
aoc.net.au
oac.edu.au
aco.at
oca.me
aco.fo
aoc.co.uk
oca.com.mx
aoc.se
aoc.ro
aco.ch
aco.jobs
cao.net
aoc.no
aco.com.cn
cao.info
cao.com.br
oca.foundation
cao.cl

DNS History

6 records (5 active, 1 former)

202120222023202420252026NSns1.dotvndns.vnns2.dotvndns.vnns3.dotvndns.vnnsbak.dotvndns.comA103.173.226.15445.122.221.122
●NSns1.dotvndns.vn2020-01-12 → 2026-05-09 · 2 obs
● 2020-01-12 01:36:28
● 2026-05-09 15:41:30
●NSns2.dotvndns.vn2020-01-12 → 2026-05-09 · 2 obs
● 2020-01-12 01:36:28
● 2026-05-09 15:41:30
●NSns3.dotvndns.vn2020-01-12 → 2026-05-09 · 2 obs
● 2020-01-12 01:36:28
● 2026-05-09 15:41:30
●NSnsbak.dotvndns.com2020-01-12 → 2026-05-09 · 2 obs
● 2020-01-12 01:36:28
● 2026-05-09 15:41:30
●A103.173.226.1542026-05-01 → 2026-05-09 · 3 obs
○ 2020-01-12 01:36:28
● 2026-05-01 07:15:22
● 2026-05-09 15:41:30
○A45.122.221.1222020-01-12 → 2020-01-12 · 3 obs
● 2020-01-12 01:36:28
○ 2026-05-01 07:15:22
○ 2026-05-09 15:41:30

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
vna.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn...-
coa.org.vnns1.dotvndns.vn, ns2.dotvndns.vn, ns3.dotvndns.vn, nsbak.dotvndns.com-

✅ Authoritative Response

Server:112.213.89.22

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coa.org.vn (unsigned zone)

⏱️ Timing

Total: 2095ms | Queries: -

📄 Records

TypeCountSample Data
A1103.173.226.154
NS4ns2.dotvndns.vn, ns3.dotvndns.vn...
SOA1ns1.dotvndns.vn hostmaster.coa.org.vn

Analysis

Hierarchy

coa.org.vn is a parent of mail.coa.org.vn, cpcontacts.coa.org.vn, dddd.coa.org.vn, webdisk.coa.org.vn, www.coa.org.vn and a few other host names.

IP Addresses

coa.org.vn points to a single IP address: 103.173.226.154.

Other host names such as wbsubdomain.a.bb.ccc.dddd.coa.org.vn, mail.coa.org.vn, bb.ccc.dddd.coa.org.vn, a.bb.ccc.dddd.coa.org.vn and cpcontacts.coa.org.vn share IPs with coa.org.vn.

Name Servers

coa.org.vn is delegated to four name servers: nsbak.dotvndns.com, ns1.dotvndns.vn, ns2.dotvndns.vn and ns3.dotvndns.vn.

coa.org.vn at least partially shares name servers with other domains, for example giaothongthanglong.com.vn, tiepbuoctien.vn, xahang.com, newtechsol.vn and thuyhactech.store.

these name servers commonly pair with ns1.pavietnam.vn, ns2.pavietnam.vn, nsbak.pavietnam.net and ns4.dotvndns.vn.

Host names with two IP numbers: nsbak.dotvndns.com points to 2406:9c80::9000:302 and 112.213.89.22; ns1.dotvndns.vn points to 2406:9c80::66 and 112.213.89.3; ns2.dotvndns.vn points to 2406:9c80::9000:111 and 222.255.121.247.

Host names with one IP number: ns3.dotvndns.vn points to 112.213.89.22.

Host names that point to 112.213.89.22: nsbak.dotvndns.com and ns3.dotvndns.vn.