`caohoc.com.vn`

DNSSEC	⚠️ Not signed
A	123.30.178.124^{🇻🇳 VTN-1123.30.178.0/24 VNPT}
		PTR	`static.vnpt.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	`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	`nsbak.dotvndns.com` ⚠️ Not in zone NS records
		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:c1d::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`ww-in-f27.1e100.net`
		A	142.250.31.26^{🇺🇸 Google142.250.31.0/24}
			PTR	`bj-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`aspmx2.googlemail.com`⁽¹⁰⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-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	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
TXT	`v=spf1 include:_spf.google.com ~all`
TXT	`v=spf1 a mx ~all`
SOA	`ns1.dotvndns.vn`hostmaster@caohoc.com.vn 2023-12-12 #17

`com.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=2022689013

Subdomains

www.caohoc.com.vn

Same first word

caohoc.vn

caohoc.com

caohoc.com.vn

Similar names

chaoco.com

coocha.me

cohaco.rip

chooca.com

cocoha.net

chocoa.jp

chocoa.me

chocoa.nl

cohoca.com

chocoa.es

ocoach.com

acchoo.com

cocoha.org

haccoo.com

cohaco.net

aochco.se

ocoach.info

chocoa.biz

chocoa.com

hococa.com

coocha.kr

hacoco.de

coocha.club

coocha.co.kr

cocoah.com

chaoco.vn

ocoach.nl

hacoco.com

coocha.org

coocha.com

cooach.ch

cohaco.jp

cocoha.com

coocha.net

coocha.info

chocoa.in

cachoo.com

cochoa.com

coacho.com

cocaho.com

cohaco.com

DNS History

9 records (9 active, 0 former)

●NSns1.dotvndns.vn2017-03-27 → 2026-04-26 · 2 obs

● 2017-03-27 06:48:20
● 2026-04-26 18:32:22

●NSns2.dotvndns.vn2017-03-27 → 2026-04-26 · 2 obs

● 2017-03-27 06:48:20
● 2026-04-26 18:32:22

●NSnsbak.dotvndns.com2026-03-27 → 2026-04-26 · 3 obs

○ 2017-03-27 06:48:20
● 2026-03-27 00:19:46
● 2026-04-26 18:32:22

●MXalt1.aspmx.l.google.com2017-03-27 → 2026-04-26 · 2 obs

● 2017-03-27 06:48:20
● 2026-04-26 18:32:22

●MXalt2.aspmx.l.google.com2017-03-27 → 2026-04-26 · 2 obs

● 2017-03-27 06:48:20
● 2026-04-26 18:32:22

●MXaspmx.l.google.com2017-03-27 → 2026-04-26 · 2 obs

● 2017-03-27 06:48:20
● 2026-04-26 18:32:22

●MXaspmx2.googlemail.com2017-03-27 → 2026-04-26 · 2 obs

● 2017-03-27 06:48:20
● 2026-04-26 18:32:22

●MXaspmx3.googlemail.com2017-03-27 → 2026-04-26 · 2 obs

● 2017-03-27 06:48:20
● 2026-04-26 18:32:22

●A123.30.178.1242017-03-27 → 2026-04-26 · 2 obs

● 2017-03-27 06:48:20
● 2026-04-26 18:32:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	h.dns-servers.vn, a.dns-servers.vn, d.dns-servers.vn, b.dns-servers.vn...	16 records
caohoc.com.vn	ns1.dotvndns.vn, ns2.dotvndns.vn, nsbak.dotvndns.com	-

✅ Authoritative Response

Server:112.213.89.22

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for caohoc.com.vn (unsigned zone)

⏱️ Timing

Total: 5202ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`123.30.178.124`
NS	2	`ns1.dotvndns.vn, ns2.dotvndns.vn`
MX	5	`alt2.aspmx.l.google.com (pri: 5), aspmx.l.google.com (pri: 1)...`
TXT	2	`v=spf1 a mx ~all, v=spf1 include:_spf.google.com ~all`
SOA	1	`ns1.dotvndns.vn hostmaster.caohoc.com.vn`

📌 Glue Records Collected

Total: 16

In-bailiwick: 16 (h.dns-servers.vn, g.dns-servers.vn, f.dns-servers.vn...)

Analysis

Hierarchy

caohoc.com.vn is a parent of www.caohoc.com.vn.

IP Addresses

caohoc.com.vn points to a single IP address: 123.30.178.124.

Other host names such as phanmem.com, vietnamcopyright.vn, asiamedia.us, clip.bhmedia.vn and www.caohoc.com.vn share IP numbers with caohoc.com.vn.

Name Servers

caohoc.com.vn is delegated to three name servers: nsbak.dotvndns.com, ns1.dotvndns.vn and ns2.dotvndns.vn.

At least part of the name servers for caohoc.com.vn are shared with other domains, for instance vangngonsaigon.net, khang-audio.com, hoanghao.vn, vietthang.vn and vsh.org.vn.