`proficiencytesting.vn`

DNSSEC	⚠️ Not signed
A	14.160.32.79^{🇻🇳 VTN-114.160.32.0/20 VNPT-Net}
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	`felipe.ns.cloudflare.com` ⚠️ Not in parent delegation
		A	2606:4700:58::a29f:2c74^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`felipe.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c374^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`felipe.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2374^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`felipe.ns.cloudflare.com`
		A	108.162.195.116^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`felipe.ns.cloudflare.com`
		A	162.159.44.116^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`felipe.ns.cloudflare.com`
		A	172.64.35.116^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`felipe.ns.cloudflare.com`
NS	`laila.ns.cloudflare.com` ⚠️ Not in parent delegation
		A	2606:4700:50::a29f:267a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`laila.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c27a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`laila.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:227a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`laila.ns.cloudflare.com`
		A	108.162.194.122^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`laila.ns.cloudflare.com`
		A	162.159.38.122^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`laila.ns.cloudflare.com`
		A	172.64.34.122^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`laila.ns.cloudflare.com`
NS	`ns1.pavietnam.vn` ⚠️ Not in zone NS records
		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.pavietnam.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`
SOA	`ns1.dotvndns.vn`hostmaster@proficiencytesting.vn 2021-01-28 #1

`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=2031048908

Same first word

proficiencytesting.com.au

proficiencytesting.vn

DNS History

6 records (6 active, 0 former)

●NSfelipe.ns.cloudflare.com2026-04-30 → 2026-07-29 · 2 obs

● 2026-04-30 20:32:08
● 2026-07-29 01:45:36

●NSlaila.ns.cloudflare.com2026-04-30 → 2026-07-29 · 2 obs

● 2026-04-30 20:32:08
● 2026-07-29 01:45:36

●NSns1.dotvndns.vn2026-04-30 → 2026-07-29 · 2 obs

● 2026-04-30 20:32:08
● 2026-07-29 01:45:36

●NSns1.pavietnam.vn2026-04-30 → 2026-07-29 · 2 obs

● 2026-04-30 20:32:08
● 2026-07-29 01:45:36

●NSns2.pavietnam.vn2026-04-30 → 2026-07-29 · 2 obs

● 2026-04-30 20:32:08
● 2026-07-29 01:45:36

●A14.160.32.792026-04-30 → 2026-07-29 · 2 obs

● 2026-04-30 20:32:08
● 2026-07-29 01:45:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn...	-
proficiencytesting.vn	ns2.pavietnam.vn, ns1.pavietnam.vn	4 records

✅ Authoritative Response

Server:222.255.121.247

NS records: ns2.pavietnam.vn, ns1.pavietnam.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for proficiencytesting.vn (unsigned zone)

⏱️ Timing

Total: 1260ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`14.160.32.79`
NS	3	`laila.ns.cloudflare.com, felipe.ns.cloudflare.com...`
SOA	1	`ns1.dotvndns.vn hostmaster.proficiencyte`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.pavietnam.vn, ns2.pavietnam.vn, ns1.pavietnam.vn...)

Analysis

IP Addresses

proficiencytesting.vn directs to one IP number, which is 14.160.32.79.

Among the host names that share IP numbers with proficiencytesting.vn are tailieu.vinacert.vn, clouds.mekongfish.edu.vn, clouds4.vinacert.vn and two others.

Name Servers

The authoritative name servers for proficiencytesting.vn are ns1.dotvndns.vn, ns1.pavietnam.vn, ns2.pavietnam.vn and two others.

proficiencytesting.vn partially shares its NS delegation with several other domains, including antestreia.pt, theseus-s.com, trangtridep.vn and two others.

In DNS configurations, these name servers often share authority with nsbak.pavietnam.net, ns2.dotvndns.vn, nsbak.dotvndns.com and 3 other name servers.

Host names resolving to 6 IP numbers:

Hostname felipe.ns.cloudflare.com directs to 108.162.195.116, 162.159.44.116 and 172.64.35.116 along with 3 other IP addresses.

Hostname laila.ns.cloudflare.com directs to 108.162.194.122, 162.159.38.122 and 172.64.34.122 along with 3 other IP addresses.

Hosts with two IP numbers each:

ns1.dotvndns.vn directs traffic to 112.213.89.3 and 2406:9c80::66.

ns1.pavietnam.vn directs traffic to 112.213.89.3 and 2406:9c80::66.

ns2.pavietnam.vn directs traffic to 222.255.121.247 and 2406:9c80::9000:111.

Both ns1.dotvndns.vn and ns1.pavietnam.vn resolve to 2406:9c80::66 IP addresses each.

Both ns1.dotvndns.vn and ns1.pavietnam.vn resolve to 112.213.89.3 IP addresses each.