`has.edu.vn`

DNSSEC	⚠️ Not signed
A	172.104.189.230^{🇸🇬 AKAMAI-LINODE-AP172.104.160.0/19 Akamai Technologies}
		PTR	`172-104-189-230.ip.linodeusercontent.com`
NS	`nsbak.pavietnam.net` ⭐
		A	2406:9c80::9000:302^{🇻🇳 SUPERDATA2406:9c80::/48 -VN}
			PTR	`nsbak.dotvndns.com`
		A	112.213.89.22^{🇻🇳 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}
			PTR	`ns8922.dotvndns.vn`
NS	`ns1.dotvndns.vn`
		A	2406:9c80::66^{🇻🇳 SUPERDATA2406:9c80::/48 -VN}
			PTR	`ns1.dotvndns.vn`
		A	112.213.89.3^{🇻🇳 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}
			PTR	`ns1.dotvndns.vn`
NS	`ns1.pavietnam.vn`
		A	2406:9c80::66^{🇻🇳 SUPERDATA2406:9c80::/48 -VN}
			PTR	`ns1.dotvndns.vn`
		A	112.213.89.3^{🇻🇳 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}
			PTR	`ns1.dotvndns.vn`
NS	`ns2.dotvndns.vn`
		A	2406:9c80::9000:111^{🇻🇳 SUPERDATA2406:9c80::/48 -VN}
			PTR	`ns2.dotvndns.vn`
		A	222.255.121.247^{🇻🇳 VDC222.255.121.0/24 VNPT}
			PTR	`static.vdc.vn`
			PTR	`static.vnpt.vn`
NS	`ns2.pavietnam.vn`
		A	2406:9c80::9000:111^{🇻🇳 SUPERDATA2406:9c80::/48 -VN}
			PTR	`ns2.dotvndns.vn`
		A	222.255.121.247^{🇻🇳 VDC222.255.121.0/24 VNPT}
			PTR	`static.vdc.vn`
			PTR	`static.vnpt.vn`
NS	`nsbak.dotvndns.com`
		A	2406:9c80::9000:302^{🇻🇳 SUPERDATA2406:9c80::/48 -VN}
			PTR	`nsbak.dotvndns.com`
		A	112.213.89.22^{🇻🇳 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}
			PTR	`ns8922.dotvndns.vn`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c17::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bl-in-f26.1e100.net`
		A	192.178.155.27^{🇺🇸 Google192.178.155.0/24}
			PTR	`yuiadrs-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4023:2801::1a^{🇺🇸 Google2607:f8b0::/32}
			PTR	`lcausi-in-f26.1e100.net`
		A	192.178.128.26^{🇺🇸 Google192.178.128.0/24}
			PTR	`lcausi-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4023:3003::1a^{🇺🇸 Google2607:f8b0::/32}
			PTR	`yulnkjt-in-f26.1e100.net`
		A	172.253.145.26^{🇺🇸 Google172.253.145.0/24}
			PTR	`yulnkjt-in-f26.1e100.net`
MX	`aspmx2.googlemail.com`⁽¹⁰⁾
		A	2607:f8b0:4023:2801::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`lcausi-in-f27.1e100.net`
		A	192.178.128.26^{🇺🇸 Google192.178.128.0/24}
			PTR	`lcausi-in-f26.1e100.net`
MX	`aspmx3.googlemail.com`⁽¹⁰⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
TXT	`MS=0D24AEF0700FA0AECBF90730C1AC57E366EB0BD4`
TXT	`google-site-verification=YaVG_dAQH4FXLOPY-8mhxC28XTyRx2xKlrRSjygHKl8`
TXT	`openai-domain-verification=dv-ZNAY0LJjsQcTitmFKxRCj2qQ`
TXT	`v=spf1 include:_spf.google.com ~all`
SOA	`nsbak.pavietnam.net`hostmaster@has.edu.vn 2026-02-04 #30

`edu.vn`

	DNSSEC	⚠️ Not signed
	NS	`dns-master.vnnic.vn` ⭐
	NS	`a.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`b.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`c.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`d.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`e.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`f.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`g.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`h.dns-servers.vn` ⚠️ Not in parent delegation
	SOA	`dns-master.vnnic.vn`postmaster@vnnic.vn serial=2018564641

Subdomains

so.has.edu.vn

cba.has.edu.vn

va.has.edu.vn

hw.has.edu.vn

lms.has.edu.vn

attendance.has.edu.vn

crms.has.edu.vn

Same first word

has.es

has.net

has.life

has.no

has.hu

has.it

has.cn

has.co.uk

has.com.sg

has.cash

has.se

has.kr

has.us

has.vision

has.cc

has.com.mk

has.is

has.com.hk

has.to

has.co

has.fi

has.nl

has.ch

has.gov.sd

has.restaurant

has.jp

has.ae

has.or.id

has.edu

has.org.uk

has.golf

has.black

has.com

has.pink

has.ru

has.report

has.olsztyn.pl

has.ph

has.de

has.be

has.bike

has.org.cn

has.pt

has.cool

has.eu

has.in

has.blue

has.at

has.su

has.ie

has.com.tr

has.events

has.tv

has.la

has.sk

has.bet

has.coffee

has.dk

has.co.za

has.poker

has.info.pl

has.style

has.edu.vn

has.lv

has.com.pl

has.ac.cn

has.ca

has.cz

has.kz

Similar names

hsa.gov.sd

ash.pt

ash.org

ash.bg

ahs.co.tz

sah.org.ar

ahs.biz

sha.pp.ua

sha.run

ash.network

ahs.sakura.ne.jp

hsa.us

sha.nu

sah.gmbh

sha.by

ash.ae

ahs.healthcare

ash.net

ahs.no

sha.agency

ash.works

ash.tv

ash.jp

ash.fi

hsa.at

ash.coop

ahs.org

sah.co

sha.cx

sha.com.tr

hsa.co.uk

sha.services

sah.ooo

ash.ca

ahs.k12.wi.us

hsa.education

hsa.it

ahs.care

ash.co.za

ahs.co

ash.vc

ash.fail

hsa.nl

sah.kz

sah.am

sah.at

sah.co.nz

ash.gmbh

sha.at

ash.lv

ash.de

ash.eu

ash.biz

sah.de

sah.com.au

sha.se

ahs.vn

sha.org.sg

ahs.cu

sah.es

sah.io

ash.bzh

ash.ninja

ahs.net

ash.red

ash.tm.fr

sha.cc

sha.co.zw

ahs.at

ahs.ch

hsa.co.za

ahs.pub

ash.hu

sah.cc

hsa.is

hsa.org.za

hsa.hr

ahs.ae

sah.in

sha.ru

DNS History

13 records (12 active, 1 former)

●NSns1.dotvndns.vn2026-05-01 → 2026-05-09 · 3 obs

○ 2018-07-08 18:07:48
● 2026-05-01 00:41:14
● 2026-05-09 15:42:32

●NSns1.pavietnam.vn2018-07-08 → 2026-05-09 · 2 obs

● 2018-07-08 18:07:48
● 2026-05-09 15:42:32

●NSns2.dotvndns.vn2026-05-01 → 2026-05-09 · 3 obs

○ 2018-07-08 18:07:48
● 2026-05-01 00:41:14
● 2026-05-09 15:42:32

●NSns2.pavietnam.vn2018-07-08 → 2026-05-09 · 2 obs

● 2018-07-08 18:07:48
● 2026-05-09 15:42:32

●NSnsbak.dotvndns.com2026-05-01 → 2026-05-09 · 3 obs

○ 2018-07-08 18:07:48
● 2026-05-01 00:41:14
● 2026-05-09 15:42:32

●NSnsbak.pavietnam.net2018-07-08 → 2026-05-09 · 2 obs

● 2018-07-08 18:07:48
● 2026-05-09 15:42:32

●MXalt1.aspmx.l.google.com2018-07-08 → 2026-05-09 · 2 obs

● 2018-07-08 18:07:48
● 2026-05-09 15:42:32

●MXalt2.aspmx.l.google.com2018-07-08 → 2026-05-09 · 2 obs

● 2018-07-08 18:07:48
● 2026-05-09 15:42:32

●MXaspmx.l.google.com2018-07-08 → 2026-05-09 · 2 obs

● 2018-07-08 18:07:48
● 2026-05-09 15:42:32

●MXaspmx2.googlemail.com2018-07-08 → 2026-05-09 · 2 obs

● 2018-07-08 18:07:48
● 2026-05-09 15:42:32

●MXaspmx3.googlemail.com2018-07-08 → 2026-05-09 · 2 obs

● 2018-07-08 18:07:48
● 2026-05-09 15:42:32

○A112.78.2.1892018-07-08 → 2018-07-08 · 3 obs

● 2018-07-08 18:07:48
○ 2026-05-01 00:41:14
○ 2026-05-09 15:42:32

●A172.104.189.2302026-05-01 → 2026-05-09 · 3 obs

○ 2018-07-08 18:07:48
● 2026-05-01 00:41:14
● 2026-05-09 15:42:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	b.dns-servers.vn, e.dns-servers.vn, h.dns-servers.vn, c.dns-servers.vn...	-
has.edu.vn	ns1.pavietnam.vn, ns2.pavietnam.vn, nsbak.pavietnam.net, nsbak.dotvndns.com...	-

✅ Authoritative Response

Server:112.213.89.22

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 2395ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`172.104.189.230`
NS	6	`ns1.dotvndns.vn, nsbak.dotvndns.com...`
MX	5	`aspmx.l.google.com (pri: 1), alt2.aspmx.l.google.com (pri: 5)...`
TXT	4	`openai-domain-verification=dv-ZNAY0LJjsQ, v=spf1 include:_spf.google.com ~all...`
SOA	1	`nsbak.pavietnam.net hostmaster.has.edu.v`