`langmaster.vn`

DNSSEC	⚠️ Not signed
A	171.244.51.221^{🇻🇳 VTDC-AS-VN171.244.48.0/22 Proxy-registered route object}
NS	`a.ns.hostvn.net` ⭐
		A	185.136.96.112^{🇺🇸 CLOUDNSNET185.136.96.0/24 Cloud DNS Ltd}
			PTR	`a.ns.hostvn.net`
		A	185.136.97.112^{CLOUDNSNET185.136.97.0/24 Cloud DNS Ltd}
			PTR	`a.ns.hostvn.net`
NS	`b.ns.hostvn.net`
		A	185.136.98.112^{🇺🇸 CLOUDNSNET185.136.98.0/24 Cloud DNS Ltd}
			PTR	`b.ns.hostvn.net`
		A	185.136.99.112^{CLOUDNSNET185.136.99.0/24 Cloud DNS Ltd}
			PTR	`b.ns.hostvn.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c23::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadrs-in-f27.1e100.net`
		A	142.251.111.26^{🇺🇸 Google142.251.111.0/24}
			PTR	`bk-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`aspmx2.googlemail.com`⁽¹⁰⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`aspmx3.googlemail.com`⁽¹⁰⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
TXT	`google-site-verification=4CHfl8D2dLHgModgSCddMIkiHIwl07EYY8ye13Xbyi8`
SOA	`a.ns.hostvn.net`hostmaster@hostvn.net 2026-03-21 #4

`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 serial=2030717397

Subdomains

erp.langmaster.vn

www.langmaster.vn

Same first word

langmaster.de

langmaster.vn

langmaster.edu.vn

langmaster.com

langmaster.cz

Similar names

DNS History

13 records (8 active, 5 former)

●NSa.ns.hostvn.net2026-03-17 → 2026-04-29 · 3 obs

○ 2017-12-19 15:28:28
● 2026-03-17 21:23:04
● 2026-04-29 19:59:10

●NSb.ns.hostvn.net2026-03-17 → 2026-04-29 · 3 obs

○ 2017-12-19 15:28:28
● 2026-03-17 21:23:04
● 2026-04-29 19:59:10

○NSns1.anycast.vn2017-12-19 → 2017-12-19 · 3 obs

● 2017-12-19 15:28:28
○ 2026-03-17 21:23:04
○ 2026-04-29 19:59:10

○NSns2.anycast.vn2017-12-19 → 2017-12-19 · 3 obs

● 2017-12-19 15:28:28
○ 2026-03-17 21:23:04
○ 2026-04-29 19:59:10

○NSns3.anycast.vn2017-12-19 → 2017-12-19 · 3 obs

● 2017-12-19 15:28:28
○ 2026-03-17 21:23:04
○ 2026-04-29 19:59:10

○NSns4.anycast.vn2017-12-19 → 2017-12-19 · 3 obs

● 2017-12-19 15:28:28
○ 2026-03-17 21:23:04
○ 2026-04-29 19:59:10

●MXalt1.aspmx.l.google.com2026-03-17 → 2026-04-29 · 2 obs

● 2026-03-17 21:23:04
● 2026-04-29 19:59:10

●MXalt2.aspmx.l.google.com2026-03-17 → 2026-04-29 · 2 obs

● 2026-03-17 21:23:04
● 2026-04-29 19:59:10

●MXaspmx.l.google.com2026-03-17 → 2026-04-29 · 2 obs

● 2026-03-17 21:23:04
● 2026-04-29 19:59:10

●MXaspmx2.googlemail.com2026-03-17 → 2026-04-29 · 2 obs

● 2026-03-17 21:23:04
● 2026-04-29 19:59:10

●MXaspmx3.googlemail.com2026-03-17 → 2026-04-29 · 2 obs

● 2026-03-17 21:23:04
● 2026-04-29 19:59:10

●A171.244.51.2212026-03-17 → 2026-04-29 · 3 obs

○ 2017-12-19 15:28:28
● 2026-03-17 21:23:04
● 2026-04-29 19:59:10

○A210.245.93.712017-12-19 → 2017-12-19 · 3 obs

● 2017-12-19 15:28:28
○ 2026-03-17 21:23:04
○ 2026-04-29 19:59:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn...	-
langmaster.vn	b.ns.hostvn.net, a.ns.hostvn.net	-

✅ Authoritative Response

Server:185.136.99.112

NS records: b.ns.hostvn.net, a.ns.hostvn.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for langmaster.vn (unsigned zone)

⏱️ Timing

Total: 858ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`171.244.51.221`
NS	2	`a.ns.hostvn.net, b.ns.hostvn.net`
MX	5	`aspmx3.googlemail.com (pri: 10), aspmx.l.google.com (pri: 1)...`
TXT	1	`google-site-verification=4CHfl8D2dLHgMod`
SOA	1	`a.ns.hostvn.net hostmaster.hostvn.net`

Analysis

Hierarchy

langmaster.vn is a parent of erp.langmaster.vn and www.langmaster.vn.

IP Addresses

langmaster.vn resolves to one IP number: 171.244.51.221.

Other host names, for instance binggo.vn, langgo.vn and erp.langmaster.vn share IP numbers with langmaster.vn.

Name Servers

langmaster.vn is delegated to two name servers a.ns.hostvn.net and b.ns.hostvn.net.

langmaster.vn shares the same name server setup as other domains, for instance vanvanphu.com, phucviet.com.vn, cybergroup.vn, songlamstone.vn and a2ftu.info.

langmaster.vn at least partially shares name servers with other domains, for instance uni-fine.com, tindulich.vn, dihoc.vn, peo.vn and thorakaovn.com.