`openlearning.edu.vn`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:acba^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::6815:1e63^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.30.99^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.172.186^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`angela.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a41^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`angela.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c041^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`angela.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2041^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`angela.ns.cloudflare.com`
		A	108.162.192.65^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`angela.ns.cloudflare.com`
		A	172.64.32.65^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`angela.ns.cloudflare.com`
		A	173.245.58.65^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`angela.ns.cloudflare.com`
NS	`toby.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bef^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`toby.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1ef^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`toby.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21ef^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`toby.ns.cloudflare.com`
		A	108.162.193.239^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`toby.ns.cloudflare.com`
		A	172.64.33.239^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`toby.ns.cloudflare.com`
		A	173.245.59.239^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`toby.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c27::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadsk-in-f27.1e100.net`
		A	142.251.167.27^{🇺🇸 Google142.251.167.0/24}
			PTR	`ww-in-f27.1e100.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	2607:f8b0:4023:3003::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`yulnkjt-in-f27.1e100.net`
		A	172.253.145.26^{🇺🇸 Google172.253.145.0/24}
			PTR	`yulnkjt-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c00::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`ws-in-f26.1e100.net`
			PTR	`ws-in-x1a.1e100.net`
		A	173.194.76.27^{🇺🇸 Google173.194.76.0/24}
			PTR	`ws-in-f27.1e100.net`
TXT	`ca3-fd8cb94f36254132bb51b08742a487e1`
TXT	`google-site-verification=39evECCU9AmkGN64QzX0bdpUR78xEH9DaFlC4CGEQhw`
TXT	`google-site-verification=XdyNg3w3d_Pl4HWIQ-19p_x8fBmkvunxbhWMRuwotDk`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.30.99, 172.67.172.186
		IPv6 hints	2606:4700:3030::ac43:acba, 2606:4700:3031::6815:1e63
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=139, name=cloudflare-ech.com
SOA	`angela.ns.cloudflare.com`dns@cloudflare.com serial=2403586217

`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=2018565574

Subdomains

studyspace.openlearning.edu.vn

osaroki.openlearning.edu.vn

hausoc.openlearning.edu.vn

tlms.openlearning.edu.vn

steamworld.openlearning.edu.vn

drake.openlearning.edu.vn

72d411ac-55fa-4eb1-96aa-b7d7d02dc45c.openlearning.edu.vn

voz6.openlearning.edu.vn

kimphuong.openlearning.edu.vn

7bdfb975.openlearning.edu.vn

atest.openlearning.edu.vn

ducngo.openlearning.edu.vn

phuongtran.openlearning.edu.vn

txmau.openlearning.edu.vn

voz14.openlearning.edu.vn

dung4.openlearning.edu.vn

hoahocdvs.openlearning.edu.vn

lmcmath.openlearning.edu.vn

kuk11.openlearning.edu.vn

voz20.openlearning.edu.vn

thanhnv.openlearning.edu.vn

brettlearning.openlearning.edu.vn

dung2.openlearning.edu.vn

trxnsdemo.openlearning.edu.vn

tieuhoc.openlearning.edu.vn

dddd.openlearning.edu.vn

minhtran.openlearning.edu.vn

ktqwohoctoan.openlearning.edu.vn

medicine.openlearning.edu.vn

hmoodle.openlearning.edu.vn

ardha.openlearning.edu.vn

webmk.openlearning.edu.vn

hovu.openlearning.edu.vn

voz15.openlearning.edu.vn

imagine.openlearning.edu.vn

zzpziyfssylisa.openlearning.edu.vn

tnkh.openlearning.edu.vn

voz10.openlearning.edu.vn

voz11.openlearning.edu.vn

mail.openlearning.edu.vn

dung3.openlearning.edu.vn

voz16.openlearning.edu.vn

voz21.openlearning.edu.vn

kamal.openlearning.edu.vn

csharp.openlearning.edu.vn

luna.openlearning.edu.vn

communityt.openlearning.edu.vn

voz8.openlearning.edu.vn

voz24.openlearning.edu.vn

93fa2811-f2fb-47e5-9681-d82c35caf62a.openlearning.edu.vn

website.openlearning.edu.vn

vcmi.openlearning.edu.vn

dqhoa.openlearning.edu.vn

mynewlms.openlearning.edu.vn

dung.openlearning.edu.vn

frbtylisa.openlearning.edu.vn

voz23.openlearning.edu.vn

voz19.openlearning.edu.vn

peiuqdemo.openlearning.edu.vn

voz2.openlearning.edu.vn

aminga.openlearning.edu.vn

kphnedung3.openlearning.edu.vn

mitest.openlearning.edu.vn

voz.openlearning.edu.vn

ves.openlearning.edu.vn

tranthuan.openlearning.edu.vn

0af6e281-0923-4496-b9b8-e3df7d69e93a.openlearning.edu.vn

oto.openlearning.edu.vn

smtp.openlearning.edu.vn

voz22.openlearning.edu.vn

hocnuahocmai.openlearning.edu.vn

dmhung.openlearning.edu.vn

trinhxuan.openlearning.edu.vn

meet.openlearning.edu.vn

mstuclass.openlearning.edu.vn

datopen.openlearning.edu.vn

fhivvjacob.openlearning.edu.vn

ntnam.openlearning.edu.vn

kitdemo.openlearning.edu.vn

nho.openlearning.edu.vn

tieuthu.openlearning.edu.vn

tkgrpdemo.openlearning.edu.vn

lisa.openlearning.edu.vn

ossi.openlearning.edu.vn

nguyenngocnho.openlearning.edu.vn

foss.openlearning.edu.vn

ktran.openlearning.edu.vn

flc.openlearning.edu.vn

cycerta.openlearning.edu.vn

thuphapvietbte.openlearning.edu.vn

thptphanliembti.openlearning.edu.vn

voz5.openlearning.edu.vn

voz9.openlearning.edu.vn

edu.openlearning.edu.vn

demo.openlearning.edu.vn

owhvxlisa.openlearning.edu.vn

shinha.openlearning.edu.vn

voz17.openlearning.edu.vn

voz4.openlearning.edu.vn

datopen2.openlearning.edu.vn

ducid.openlearning.edu.vn

iejozlisa.openlearning.edu.vn

voz7.openlearning.edu.vn

mosgoit.openlearning.edu.vn

yfssylisa.openlearning.edu.vn

micurso.openlearning.edu.vn

Same first word

Similar names

onlinepengar.se

pengaronline.com

learningopen.com

pengaronline.se

DNS History

11 records (11 active, 0 former)

●NSangela.ns.cloudflare.com2026-04-30 → 2026-05-13 · 2 obs

● 2026-04-30 19:50:58
● 2026-05-13 05:12:30

●NStoby.ns.cloudflare.com2026-04-30 → 2026-05-13 · 2 obs

● 2026-04-30 19:50:58
● 2026-05-13 05:12:30

●MXalt1.aspmx.l.google.com2026-04-30 → 2026-05-13 · 2 obs

● 2026-04-30 19:50:58
● 2026-05-13 05:12:30

●MXalt2.aspmx.l.google.com2026-04-30 → 2026-05-13 · 2 obs

● 2026-04-30 19:50:58
● 2026-05-13 05:12:30

●MXalt3.aspmx.l.google.com2026-04-30 → 2026-05-13 · 2 obs

● 2026-04-30 19:50:58
● 2026-05-13 05:12:30

●MXalt4.aspmx.l.google.com2026-04-30 → 2026-05-13 · 2 obs

● 2026-04-30 19:50:58
● 2026-05-13 05:12:30

●MXaspmx.l.google.com2026-04-30 → 2026-05-13 · 2 obs

● 2026-04-30 19:50:58
● 2026-05-13 05:12:30

●A104.21.30.992026-04-30 → 2026-05-13 · 2 obs

● 2026-04-30 19:50:58
● 2026-05-13 05:12:30

●A172.67.172.1862026-04-30 → 2026-05-13 · 2 obs

● 2026-04-30 19:50:58
● 2026-05-13 05:12:30

●A2606:4700:3030::ac43:acba2026-04-30 → 2026-05-13 · 2 obs

● 2026-04-30 19:50:58
● 2026-05-13 05:12:30

●A2606:4700:3031::6815:1e632026-04-30 → 2026-05-13 · 2 obs

● 2026-04-30 19:50:58
● 2026-05-13 05:12:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	c.dns-servers.vn, a.dns-servers.vn, e.dns-servers.vn, g.dns-servers.vn...	-
openlearning.edu.vn	toby.ns.cloudflare.com, angela.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.193.239

NS records: toby.ns.cloudflare.com, angela.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 1383ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.30.99, 172.67.172.186`
AAAA	2	`2606:4700:3030::ac43:acba, 2606:4700:3031::6815:1e63`
NS	2	`angela.ns.cloudflare.com, toby.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	3	`ca3-fd8cb94f36254132bb51b08742a487e1, google-site-verification=39evECCU9AmkGN6...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`angela.ns.cloudflare.com dns.cloudflare.`

Analysis

Hierarchy

openlearning.edu.vn is the parent of studyspace.openlearning.edu.vn, osaroki.openlearning.edu.vn, hausoc.openlearning.edu.vn, tlms.openlearning.edu.vn, steamworld.openlearning.edu.vn and hundreds of other host names.

IP Addresses

openlearning.edu.vn refers to four IP numbers: 2606:4700:3030::ac43:acba, 2606:4700:3031::6815:1e63, 104.21.30.99 and 172.67.172.186.

Other host names, for instance cycerta.openlearning.edu.vn, ninecasinologin.com, thuphapvietbte.openlearning.edu.vn, longnanlvyou.com and mvalliere.com share IP numbers with openlearning.edu.vn.