`u2u4.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:48b5^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::ac43:99d7^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.72.181^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.153.215^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`karsyn.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26c2^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`karsyn.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2c2^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`karsyn.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22c2^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`karsyn.ns.cloudflare.com`
		A	108.162.194.194^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`karsyn.ns.cloudflare.com`
		A	162.159.38.194^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`karsyn.ns.cloudflare.com`
		A	172.64.34.194^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`karsyn.ns.cloudflare.com`
NS	`leonard.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c36^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leonard.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c336^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`leonard.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2336^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`leonard.ns.cloudflare.com`
		A	108.162.195.54^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leonard.ns.cloudflare.com`
		A	162.159.44.54^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leonard.ns.cloudflare.com`
		A	172.64.35.54^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leonard.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.72.181, 172.67.153.215
		IPv6 hints	2606:4700:3031::6815:48b5, 2606:4700:3034::ac43:99d7
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=148, name=cloudflare-ech.com
SOA	`karsyn.ns.cloudflare.com`dns@cloudflare.com serial=2406185635

`com`

	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=1782925101

Subdomains

w-www.u2u4.com

Same first word

u2u4.com

u2u4.cn

Similar names

4u2u.com

u24u.de

uu24.com

24uu.com

4u2u.co.uk

2u4u.co.uk

u42u.xyz

2u4u.net

4u2u.ru

2u4u.jp

2u4u.co

4u2u.de

uu24.ru

uu24.de

DNS History

19 records (6 active, 13 former)

○NSf1g1ns1.dnspod.net2015-08-30 → 2015-08-30 · 3 obs

● 2015-08-30 20:26:22
○ 2016-03-06 20:46:26
○ 2026-07-01 17:12:42

○NSf1g1ns2.dnspod.net2015-08-30 → 2015-08-30 · 3 obs

● 2015-08-30 20:26:22
○ 2016-03-06 20:46:26
○ 2026-07-01 17:12:42

●NSkarsyn.ns.cloudflare.com2026-06-03 → 2026-07-01 · 3 obs

○ 2026-03-31 17:31:28
● 2026-06-03 05:48:20
● 2026-07-01 17:12:42

●NSleonard.ns.cloudflare.com2026-06-03 → 2026-07-01 · 3 obs

○ 2026-03-31 17:31:28
● 2026-06-03 05:48:20
● 2026-07-01 17:12:42

○NSns1.parkingcrew.net2016-05-30 → 2016-12-29 · 5 obs

○ 2016-03-06 20:46:26
● 2016-05-30 14:43:58
● 2016-12-29 20:58:36
○ 2017-08-23 06:25:30
○ 2026-07-01 17:12:42

○NSns2.parkingcrew.net2016-05-30 → 2016-12-29 · 5 obs

○ 2016-03-06 20:46:26
● 2016-05-30 14:43:58
● 2016-12-29 20:58:36
○ 2017-08-23 06:25:30
○ 2026-07-01 17:12:42

○NSns49.domaincontrol.com2017-08-23 → 2017-08-23 · 4 obs

○ 2016-12-29 20:58:36
● 2017-08-23 06:25:30
○ 2026-03-31 17:31:28
○ 2026-07-01 17:12:42

○NSns50.domaincontrol.com2017-08-23 → 2017-08-23 · 4 obs

○ 2016-12-29 20:58:36
● 2017-08-23 06:25:30
○ 2026-03-31 17:31:28
○ 2026-07-01 17:12:42

○MXmail.h-email.net2016-05-30 → 2016-12-29 · 4 obs

● 2016-05-30 14:43:58
● 2016-12-29 20:58:36
○ 2017-08-23 06:25:30
○ 2026-07-01 17:12:42

●A104.21.72.1812026-06-03 → 2026-07-01 · 3 obs

○ 2026-03-31 17:31:28
● 2026-06-03 05:48:20
● 2026-07-01 17:12:42

○A113.10.155.1802016-01-09 → 2016-01-21 · 4 obs

● 2016-01-09 03:55:52
● 2016-01-21 09:19:28
○ 2016-03-06 20:46:26
○ 2026-07-01 17:12:42

○A172.106.188.552017-08-23 → 2017-08-23 · 4 obs

○ 2016-12-29 20:58:36
● 2017-08-23 06:25:30
○ 2026-03-31 17:31:28
○ 2026-07-01 17:12:42

●A172.67.153.2152026-06-03 → 2026-07-01 · 3 obs

○ 2026-03-31 17:31:28
● 2026-06-03 05:48:20
● 2026-07-01 17:12:42

○A185.53.177.82016-05-30 → 2016-10-05 · 5 obs

○ 2016-03-06 20:46:26
● 2016-05-30 14:43:58
● 2016-10-05 10:39:18
○ 2016-12-04 18:46:56
○ 2026-07-01 17:12:42

○A185.53.178.82016-12-04 → 2016-12-29 · 5 obs

○ 2016-10-05 10:39:18
● 2016-12-04 18:46:56
● 2016-12-29 20:58:36
○ 2017-08-23 06:25:30
○ 2026-07-01 17:12:42

●A2606:4700:3031::6815:48b52026-06-25 → 2026-07-01 · 3 obs

○ 2026-06-03 05:48:20
● 2026-06-25 01:31:50
● 2026-07-01 17:12:42

○A2606:4700:3033::ac43:99d72026-06-03 → 2026-06-03 · 4 obs

○ 2026-03-31 17:31:28
● 2026-06-03 05:48:20
○ 2026-06-25 01:31:50
○ 2026-07-01 17:12:42

●A2606:4700:3034::ac43:99d72026-06-25 → 2026-07-01 · 3 obs

○ 2026-06-03 05:48:20
● 2026-06-25 01:31:50
● 2026-07-01 17:12:42

○A2606:4700:3037::6815:48b52026-06-03 → 2026-06-03 · 4 obs

○ 2026-03-31 17:31:28
● 2026-06-03 05:48:20
○ 2026-06-25 01:31:50
○ 2026-07-01 17:12:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
u2u4.com	karsyn.ns.cloudflare.com, leonard.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.54

NS records: karsyn.ns.cloudflare.com, leonard.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for u2u4.com (unsigned zone)

⏱️ Timing

Total: 164ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.72.181, 172.67.153.215`
AAAA	2	`2606:4700:3034::ac43:99d7, 2606:4700:3031::6815:48b5`
NS	2	`karsyn.ns.cloudflare.com, leonard.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`karsyn.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (karsyn.ns.cloudflare.com, karsyn.ns.cloudflare.com, karsyn.ns.cloudflare.com...)

Analysis

Hierarchy

u2u4.com serves as the parent of w-www.u2u4.com.

IP Addresses

u2u4.com has four IP addresses: 104.21.72.181, 172.67.153.215, 2606:4700:3031::6815:48b5 and 2606:4700:3034::ac43:99d7.

Additional host names — 178ly.cn, slif.click, cwidaho.cc and two others — share IP numbers with u2u4.com.

Name Servers

u2u4.com has two authoritative name servers — karsyn.ns.cloudflare.com and leonard.ns.cloudflare.com.

u2u4.com shares its name server setup with other domains, including 026mm.com, 012(0x736578).com, ww780.com and two others.

u2u4.com has at least partial name server overlap with other domains, such as family(0x696e63657374).pro, lazcd.com, fun88jay3.com and two others.

These name servers tend to appear together with the name servers susan.ns.cloudflare.com, kianchau.ns.cloudflare.com and sean.ns.cloudflare.com.

Host names with 6 IP numbers:

karsyn.ns.cloudflare.com points to 108.162.194.194, 162.159.38.194, 172.64.34.194 and 3 other IP addresses.

leonard.ns.cloudflare.com points to 108.162.195.54, 162.159.44.54, 172.64.35.54 and 3 other IP addresses.

u2u4.com - robtex.com

u2u4.com

com

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

`u2u4.com`

`com`