`ex-learning.com.vn`

DNSSEC	⚠️ Not signed
A	123.30.208.48^{🇻🇳 VTN-1123.30.208.0/24 VNPT}
		PTR	`static.vnpt.vn`
NS	`ns1.digitalocean.com` ⭐ ⚠️ Not in parent delegation
		A	2606:4700:52::ac40:34d2^{🇺🇸 Cloudflare2606:4700:52::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns1.digitalocean.com`
		A	172.64.52.210^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns1.digitalocean.com`
NS	`ns1.serveast.net` ⚠️ Not in zone NS records
		A	172.64.52.210^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns1.digitalocean.com`
NS	`ns2.digitalocean.com` ⚠️ Not in parent delegation
		A	2606:4700:5a::ac40:3515^{🇺🇸 Cloudflare2606:4700:5a::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns2.digitalocean.com`
		A	172.64.53.21^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns2.digitalocean.com`
NS	`ns2.serveast.net` ⚠️ Not in zone NS records
		A	172.64.53.21^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns2.digitalocean.com`
NS	`ns3.digitalocean.com` ⚠️ Not in parent delegation
		A	2606:4700:52::ac40:31d1^{🇺🇸 Cloudflare2606:4700:52::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns3.digitalocean.com`
		A	172.64.49.209^{🇺🇸 Cloudflare172.64.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns3.digitalocean.com`
NS	`ns3.serveast.net` ⚠️ Not in zone NS records
		A	172.64.49.209^{🇺🇸 Cloudflare172.64.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns3.digitalocean.com`
TXT	`_1k2qj8ooxigi666y0kcj7cid6p94xbh`
SOA	`ns1.digitalocean.com`hostmaster@ex-learning.com.vn serial=0

`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=2022707923

Same first word

ex-learning.com.vn

DNS History

7 records (7 active, 0 former)

●NSns1.digitalocean.com2026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 10:03:20
● 2026-05-10 15:14:28

●NSns1.serveast.net2026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 10:03:20
● 2026-05-10 15:14:28

●NSns2.digitalocean.com2026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 10:03:20
● 2026-05-10 15:14:28

●NSns2.serveast.net2026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 10:03:20
● 2026-05-10 15:14:28

●NSns3.digitalocean.com2026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 10:03:20
● 2026-05-10 15:14:28

●NSns3.serveast.net2026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 10:03:20
● 2026-05-10 15:14:28

●A123.30.208.482026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 10:03:20
● 2026-05-10 15:14:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	f.dns-servers.vn, a.dns-servers.vn, h.dns-servers.vn, e.dns-servers.vn...	-
ex-learning.com.vn	ns1.serveast.net, ns3.serveast.net, ns2.serveast.net	-

✅ Authoritative Response

Server:172.64.52.210

NS records: ns1.serveast.net, ns3.serveast.net, ns2.serveast.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ex-learning.com.vn (unsigned zone)

⏱️ Timing

Total: 1186ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`123.30.208.48`
NS	3	`ns1.digitalocean.com, ns3.digitalocean.com...`
TXT	1	`_1k2qj8ooxigi666y0kcj7cid6p94xbh`
SOA	1	`ns1.digitalocean.com hostmaster.ex-learn`

Analysis

IP Addresses

ex-learning.com.vn points to IP number 123.30.208.48.

Other host names, for example mail.vn-gateway.com and vn-gateway.com, share IPs with ex-learning.com.vn.

Name Servers

ex-learning.com.vn is delegated to six name servers: ns1.digitalocean.com, ns2.digitalocean.com, ns3.digitalocean.com, ns1.serveast.net, ns2.serveast.net and ns3.serveast.net.

ex-learning.com.vn shares name servers with other domains at least partially, for example webuycentralflhouses.com, 246.99.167.in-addr.arpa, panaero.eu, samaluna.com and broka.lv.

These name servers are commonly used with the name servers ns-bk1.linex.co and ns-pm1.linex.co.

Host names with two IP numbers:

The host name ns1.digitalocean.com points to 2606:4700:52::ac40:34d2 and 172.64.52.210

The host name ns2.digitalocean.com points to 2606:4700:5a::ac40:3515 and 172.64.53.21

The host name ns3.digitalocean.com points to 2606:4700:52::ac40:31d1 and 172.64.49.209

Host names with one IP number:

The host name ns1.serveast.net points to 172.64.52.210

The host name ns2.serveast.net points to 172.64.53.21

The host name ns3.serveast.net points to 172.64.49.209

Host names that point to 172.64.52.210: ns1.digitalocean.com and ns1.serveast.net

Host names that point to 172.64.53.21: ns2.digitalocean.com and ns2.serveast.net

Host names that point to 172.64.49.209: ns3.digitalocean.com and ns3.serveast.net

Note: destination IPs 172.64.52.210, 172.64.53.21 and 172.64.49.209 recur across host names

ex-learning.com.vn - robtex.com