`congtacvien.net`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:4f0d^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::ac43:a8b0^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.79.13^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.168.176^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`dora.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a6c^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dora.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c06c^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`dora.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:206c^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`dora.ns.cloudflare.com`
		A	108.162.192.108^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dora.ns.cloudflare.com`
		A	172.64.32.108^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dora.ns.cloudflare.com`
		A	173.245.58.108^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dora.ns.cloudflare.com`
NS	`nick.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bd5^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nick.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1d5^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`nick.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21d5^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`nick.ns.cloudflare.com`
		A	108.162.193.213^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nick.ns.cloudflare.com`
		A	172.64.33.213^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nick.ns.cloudflare.com`
		A	173.245.59.213^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nick.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.79.13, 172.67.168.176
		IPv6 hints	2606:4700:3030::6815:4f0d, 2606:4700:3033::ac43:a8b0
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=58, name=cloudflare-ech.com
SOA	`dora.ns.cloudflare.com`dns@cloudflare.com serial=2401062643

`net`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1778637311

⚠️ On DNS blocklist: tif

Same first word

congtacvien.net

DNS History

10 records (6 active, 4 former)

●NSdora.ns.cloudflare.com2026-05-06 → 2026-05-13 · 3 obs

○ 2016-07-08 16:30:40
● 2026-05-06 22:07:22
● 2026-05-13 02:11:44

●NSnick.ns.cloudflare.com2026-05-06 → 2026-05-13 · 3 obs

○ 2016-07-08 16:30:40
● 2026-05-06 22:07:22
● 2026-05-13 02:11:44

○NSns1.matbao.com2015-07-18 → 2016-07-08 · 4 obs

● 2015-07-18 07:21:54
● 2016-07-08 16:30:40
○ 2026-05-06 22:07:22
○ 2026-05-13 02:11:44

○NSns2.matbao.com2015-07-18 → 2016-07-08 · 4 obs

● 2015-07-18 07:21:54
● 2016-07-08 16:30:40
○ 2026-05-06 22:07:22
○ 2026-05-13 02:11:44

○A103.54.250.1552016-03-04 → 2016-07-08 · 5 obs

○ 2015-11-29 06:31:34
● 2016-03-04 14:55:50
● 2016-07-08 16:30:40
○ 2026-05-06 22:07:22
○ 2026-05-13 02:11:44

●A104.21.79.132026-05-06 → 2026-05-13 · 3 obs

○ 2016-07-08 16:30:40
● 2026-05-06 22:07:22
● 2026-05-13 02:11:44

●A172.67.168.1762026-05-06 → 2026-05-13 · 3 obs

○ 2016-07-08 16:30:40
● 2026-05-06 22:07:22
● 2026-05-13 02:11:44

○A221.132.34.832015-07-18 → 2015-11-29 · 4 obs

● 2015-07-18 07:21:54
● 2015-11-29 06:31:34
○ 2016-03-04 14:55:50
○ 2026-05-13 02:11:44

●A2606:4700:3030::6815:4f0d2026-05-06 → 2026-05-13 · 3 obs

○ 2016-07-08 16:30:40
● 2026-05-06 22:07:22
● 2026-05-13 02:11:44

●A2606:4700:3033::ac43:a8b02026-05-06 → 2026-05-13 · 3 obs

○ 2016-07-08 16:30:40
● 2026-05-06 22:07:22
● 2026-05-13 02:11:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
congtacvien.net	dora.ns.cloudflare.com, nick.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.213

NS records: dora.ns.cloudflare.com, nick.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for congtacvien.net (unsigned zone)

⏱️ Timing

Total: 1722ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.168.176, 104.21.79.13`
AAAA	2	`2606:4700:3030::6815:4f0d, 2606:4700:3033::ac43:a8b0`
NS	2	`dora.ns.cloudflare.com, nick.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`dora.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

congtacvien.net maps to four IP numbers: 2606:4700:3030::6815:4f0d, 2606:4700:3033::ac43:a8b0, 104.21.79.13 and 172.67.168.176.

other host names include printkick.com, zuluhotel.net.ua, 6po.net, busswe.com and ht-dc.com; they share IP numbers with congtacvien.net.

Name Servers

Two name servers dora.ns.cloudflare.com and nick.ns.cloudflare.com handle the delegation for congtacvien.net.

congtacvien.net shares the same name server setup as other domains, for instance buywellesleyvw.com, way2finder.com, theonebahrain.com, ubtsnv.com and elixors.com.

congtacvien.net at least partially shares name servers with other domains, for instance pruevpn.com, blobofthoughts.com, ccluxe.nl, wp101plugin.com and sam.mobi.

These name servers are commonly used with ivan.ns.cloudflare.com and major.ns.cloudflare.com.

Six IP addresses per host:

dora.ns.cloudflare.com points to 2606:4700:50::adf5:3a6c, 2803:f800:50::6ca2:c06c, 2a06:98c1:50::ac40:206c, 108.162.192.108, 172.64.32.108 and 173.245.58.108; nick.ns.cloudflare.com points to 2606:4700:58::adf5:3bd5, 2803:f800:50::6ca2:c1d5, 2a06:98c1:50::ac40:21d5, 108.162.193.213, 172.64.33.213 and 173.245.59.213

congtacvien.net - robtex.com

congtacvien.net

net

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`congtacvien.net`

`net`