`studyhaven.io.vn`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::ac43:d068^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:2587^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.37.135^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.208.104^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`destiny.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:264c^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`destiny.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c24c^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`destiny.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:224c^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`destiny.ns.cloudflare.com`
		A	108.162.194.76^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`destiny.ns.cloudflare.com`
		A	162.159.38.76^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`destiny.ns.cloudflare.com`
		A	172.64.34.76^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`destiny.ns.cloudflare.com`
NS	`ganz.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c28^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ganz.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c328^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ganz.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2328^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ganz.ns.cloudflare.com`
		A	108.162.195.40^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ganz.ns.cloudflare.com`
		A	162.159.44.40^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ganz.ns.cloudflare.com`
		A	172.64.35.40^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ganz.ns.cloudflare.com`
MX	`mail.sang0023.io.vn` ⭐
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.37.135, 172.67.208.104
		IPv6 hints	2606:4700:3035::ac43:d068, 2606:4700:3036::6815:2587
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=247, name=cloudflare-ech.com
SOA	`destiny.ns.cloudflare.com`dns@cloudflare.com serial=2411238395

`io.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=2023672767

rank #11894 globally
rank #15 in the tld

io.vn

Theio.vndomain is a second-level country code domain extension for Vietnam. It is administered by the Vietnam Internet Network Information Center (VNNIC) and is designed for digital technology applications, platforms, and online services.

Key facts

Owner / operator: Vietnam Internet Network Information Center (VNNIC)
TLD:.vn— Vietnam
Primary purpose: Domain extension for digital technology applications, platforms, and online services
Status: active

History

Year	Event
2021	The Ministry of Information and Communications issued Circular 21/2021/TT-BTTTT, establishing the new`.io.vn`domain extension.
2022	Circular 21/2021/TT-BTTTT took effect, officially adding`.io.vn`to the national domain name plan.
2023	VNNIC officially opened public registration for`.io.vn`domain names.

Subdomains

clock.studyhaven.io.vn

Same first word

studyhaven.ph

studyhaven.io.vn

Similar names

thesundayv.com

DNS History

11 records (7 active, 4 former)

●NSdestiny.ns.cloudflare.com2026-05-01 → 2026-08-10 · 2 obs

● 2026-05-01 13:02:46
● 2026-08-10 21:43:52

●NSganz.ns.cloudflare.com2026-05-01 → 2026-08-10 · 2 obs

● 2026-05-01 13:02:46
● 2026-08-10 21:43:52

●MXmail.sang0023.io.vn2026-05-01 → 2026-08-10 · 2 obs

● 2026-05-01 13:02:46
● 2026-08-10 21:43:52

●A104.21.37.1352026-05-01 → 2026-08-10 · 4 obs

● 2026-05-01 13:02:46
○ 2026-05-22 07:04:20
● 2026-05-22 10:32:58
● 2026-08-10 21:43:52

○A172.64.80.12026-05-22 → 2026-05-22 · 4 obs

○ 2026-05-01 13:02:46
● 2026-05-22 07:04:20
○ 2026-05-22 10:32:58
○ 2026-08-10 21:43:52

●A172.67.208.1042026-05-01 → 2026-08-10 · 4 obs

● 2026-05-01 13:02:46
○ 2026-05-22 07:04:20
● 2026-05-22 10:32:58
● 2026-08-10 21:43:52

○A2606:4700:130:436c:6f75:6466:6c61:72652026-05-22 → 2026-05-22 · 4 obs

○ 2026-05-01 13:02:46
● 2026-05-22 07:04:20
○ 2026-05-22 10:32:58
○ 2026-08-10 21:43:52

○A2606:4700:3031::6815:25872026-05-01 → 2026-05-30 · 6 obs

● 2026-05-01 13:02:46
○ 2026-05-22 07:04:20
● 2026-05-22 10:32:58
● 2026-05-30 11:49:36
○ 2026-07-04 21:16:20
○ 2026-08-10 21:43:52

●A2606:4700:3035::ac43:d0682026-07-04 → 2026-08-10 · 3 obs

○ 2026-05-30 11:49:36
● 2026-07-04 21:16:20
● 2026-08-10 21:43:52

●A2606:4700:3036::6815:25872026-07-04 → 2026-08-10 · 3 obs

○ 2026-05-30 11:49:36
● 2026-07-04 21:16:20
● 2026-08-10 21:43:52

○A2606:4700:3037::ac43:d0682026-05-01 → 2026-05-30 · 6 obs

● 2026-05-01 13:02:46
○ 2026-05-22 07:04:20
● 2026-05-22 10:32:58
● 2026-05-30 11:49:36
○ 2026-07-04 21:16:20
○ 2026-08-10 21:43:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	d.dns-servers.vn, h.dns-servers.vn, a.dns-servers.vn, f.dns-servers.vn...	15 records
studyhaven.io.vn	ganz.ns.cloudflare.com, destiny.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.194.76

NS records: ganz.ns.cloudflare.com, destiny.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studyhaven.io.vn (unsigned zone)

⏱️ Timing

Total: 883ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.37.135, 172.67.208.104`
AAAA	2	`2606:4700:3035::ac43:d068, 2606:4700:3036::6815:2587`
NS	2	`destiny.ns.cloudflare.com, ganz.ns.cloudflare.com`
MX	1	`mail.sang0023.io.vn (pri: 10)`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`destiny.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 15

In-bailiwick: 15 (a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn...)

Analysis

Hierarchy

clock.studyhaven.io.vn is a subdomain of studyhaven.io.vn.

IP Addresses

studyhaven.io.vn directs to four IP numbers, which are 104.21.37.135, 172.67.208.104, 2606:4700:3035::ac43:d068 and 2606:4700:3036::6815:2587.

Two other host names, along with martix.click, blueincevents.co.uk and hedg.us, also share IP numbers with studyhaven.io.vn.

Name Servers

studyhaven.io.vn uses two name servers for its delegation: destiny.ns.cloudflare.com and ganz.ns.cloudflare.com.

studyhaven.io.vn shares its NS records with other domains, for example abtok.com, tula-hotels.ru, theswimcollective.org and two others.

The name servers of studyhaven.io.vn overlap at least partially with those of other domains — among them traodoituongtac.com, (0x7868616d73746572)233.click, itoewar.com and two more.

The name servers veda.ns.cloudflare.com, melany.ns.cloudflare.com and odin.ns.cloudflare.com are commonly seen alongside these name servers.

DNS names with 6 IP addresses:

Hostname destiny.ns.cloudflare.com directs to 108.162.194.76, 162.159.38.76 and 172.64.34.76 along with 3 other IP addresses.

Hostname ganz.ns.cloudflare.com directs to 108.162.195.40, 162.159.44.40 and 172.64.35.40 along with 3 other IP addresses.

Mail Servers

The sole mail server for studyhaven.io.vn is mail.sang0023.io.vn.

studyhaven.io.vn - robtex.com

studyhaven.io.vn

io.vn

io.vn

Key facts

History

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`studyhaven.io.vn`

`io.vn`