`knowhow.vn`

DNSSEC	⚠️ Not signed
A	185.230.63.107^{🇺🇸 wix_com185.230.63.0/24}
		PTR	`unalocated.63.wixsite.com`
NS	`ns1.matbao.vn` ⭐
		A	13.250.228.99^{🇸🇬 Amazon13.250.0.0/15 EC2 SIN prefix}
			PTR	`ec2-13-250-228-99.ap-southeast-1.compute.amazonaws.com`
		A	103.110.128.60^{🇻🇳 AXYS-VN103.110.128.0/23}
NS	`ns2.matbao.vn`
		A	35.198.203.127^{🇸🇬 Google35.198.192.0/20}
			PTR	`127.203.198.35.bc.googleusercontent.com`
		A	103.138.89.11^{🇻🇳 VNPT-AS-VN103.138.88.0/23 VNPT-NET}
MX	`knowhow-vn.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:cc09::^{🇸🇬 Microsoft2a01:111:f000::/36}
			PTR	`mail-sg2pr03cu00500.inbound.protection.outlook.com`
		A	2a01:111:f403:cc1a::8^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-tydpr03cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:cc1f::4^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-os8pr02cu00104.inbound.protection.outlook.com`
		A	52.101.124.117^{🇯🇵 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-tydpr03cu00105.inbound.protection.outlook.com`
		A	52.101.137.0^{🇸🇬 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sg2pr03cu00500.inbound.protection.outlook.com`
		A	52.101.157.80^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-os8pr02cu00100.inbound.protection.outlook.com`
TXT	`google-site-verification=XmoFuvOZhx4uZoMFBr-o-8I-qOfl2BQkMrnQDH6KFn4`
TXT	`v=spf1 mx include:spf.protection.outlook.com -all`
TXT	`MS=ms92465603`
SOA	`ns1.matbao.vn`admin@matbao.com 2025-12-18 #2

`vn`

	DNSSEC	🔒 Signed (DS record present)
	NS	`dns-master.vnnic.vn` ⭐
	NS	`a.dns-servers.vn`
	NS	`b.dns-servers.vn`
	NS	`c.dns-servers.vn`
	NS	`d.dns-servers.vn`
	NS	`e.dns-servers.vn`
	NS	`f.dns-servers.vn`
	NS	`g.dns-servers.vn`
	NS	`h.dns-servers.vn`
	SOA	`dns-master.vnnic.vn`postmaster@vnnic.vn 2031-01-31 #80

Subdomains

www.knowhow.vn

Same first word

knowhow.com.au

knowhow.training

knowhow.cc

knowhow.at

knowhow.pt

knowhow.academy

knowhow.ca

knowhow.de

knowhow.insure

knowhow.bg

knowhow.world

knowhow.vn

knowhow.systems

knowhow.center

knowhow.dk

knowhow.ir

knowhow.to

knowhow.com.uy

knowhow.com.gr

knowhow.promo

knowhow.be

knowhow.ro

knowhow.biz

knowhow.or.kr

knowhow.com.ar

knowhow.com

knowhow.tv

knowhow.ws

knowhow.lt

knowhow.com.pl

knowhow.waw.pl

knowhow.hu

knowhow.net

knowhow.hk

knowhow.fi

knowhow.com.ng

knowhow.nu

knowhow.ch

knowhow.co

knowhow.cn

knowhow.fr

knowhow.me

knowhow.it

knowhow.es

knowhow.is

knowhow.si

knowhow.cl

knowhow.se

knowhow.ceo

knowhow.sk

knowhow.com.py

knowhow.ee

knowhow.agency

knowhow.gr

knowhow.ru

Similar names

DNS History

15 records (4 active, 11 former)

●NSns1.matbao.vn2026-05-01 → 2026-07-19 · 3 obs

○ 2019-12-30 04:52:08
● 2026-05-01 11:20:56
● 2026-07-19 07:06:22

●NSns2.matbao.vn2026-05-01 → 2026-07-19 · 3 obs

○ 2019-12-30 04:52:08
● 2026-05-01 11:20:56
● 2026-07-19 07:06:22

○NSseth.ns.cloudflare.com2017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 16:28:12
○ 2019-12-30 04:52:08
○ 2026-07-19 07:06:22

○NSzoe.ns.cloudflare.com2017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 16:28:12
○ 2019-12-30 04:52:08
○ 2026-07-19 07:06:22

○MXalt1.aspmx.l.google.com2017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 16:28:12
○ 2019-12-30 04:52:08
○ 2026-07-19 07:06:22

○MXalt2.aspmx.l.google.com2017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 16:28:12
○ 2019-12-30 04:52:08
○ 2026-07-19 07:06:22

○MXaspmx.l.google.com2017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 16:28:12
○ 2019-12-30 04:52:08
○ 2026-07-19 07:06:22

○MXaspmx2.googlemail.com2017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 16:28:12
○ 2019-12-30 04:52:08
○ 2026-07-19 07:06:22

○MXaspmx3.googlemail.com2017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 16:28:12
○ 2019-12-30 04:52:08
○ 2026-07-19 07:06:22

●MXknowhow-vn.mail.protection.outlook.com2026-05-01 → 2026-07-19 · 3 obs

○ 2019-12-30 04:52:08
● 2026-05-01 11:20:56
● 2026-07-19 07:06:22

○A104.28.4.802017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 16:28:12
○ 2019-12-30 04:52:08
○ 2026-07-19 07:06:22

○A104.28.5.802017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 16:28:12
○ 2019-12-30 04:52:08
○ 2026-07-19 07:06:22

●A185.230.63.1072026-05-01 → 2026-07-19 · 3 obs

○ 2019-12-30 04:52:08
● 2026-05-01 11:20:56
● 2026-07-19 07:06:22

○A2400:cb00:2048:1::681c:4502017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 16:28:12
○ 2019-12-30 04:52:08
○ 2026-07-19 07:06:22

○A2400:cb00:2048:1::681c:5502017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 16:28:12
○ 2019-12-30 04:52:08
○ 2026-07-19 07:06:22

🔍 DNS Trace

Analysis

Hierarchy

knowhow.vn is a parent domain of www.knowhow.vn.

IP Addresses

knowhow.vn has exactly one IP address — 185.230.63.107.

gstcinc.com, workdone.biz, xoomapro.com plus two other host names have IP numbers in common with knowhow.vn.

Name Servers

The NS records for knowhow.vn delegate to ns1.matbao.vn and ns2.matbao.vn.

The name server configuration of knowhow.vn is shared with other domains, for instance welofarm.vn, daykem.edu.vn, bimsontechnology.vn and two others.

knowhow.vn shares at least some of its name servers with other domains, including alcorest.net, kusto.com.vn, udictech.vn and two others.

These name servers are frequently seen alongside ns1.matbao.com, ns2.matbao.com, ns-bak.matbao.com and 4 other name servers.

ns1.matbao.vn resolves to 13.250.228.99 and 103.110.128.60. Likewise, ns2.matbao.vn resolves to 35.198.203.127 and 103.138.89.11 — two IP addresses apiece.

Mail Servers

knowhow.vn uses one mail server — knowhow-vn.mail.protection.outlook.com.

knowhow-vn.mail.protection.outlook.com has 6 IP addresses: 52.101.124.117, 52.101.137.0, 52.101.157.80 plus 3 more.

knowhow.vn - robtex.com

knowhow.vn

vn

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`knowhow.vn`

`vn`