`yu4.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:a701^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::6815:4b1c^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.75.28^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.167.1^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`cora.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26c3^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cora.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2c3^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cora.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22c3^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cora.ns.cloudflare.com`
		A	108.162.194.195^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cora.ns.cloudflare.com`
		A	162.159.38.195^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cora.ns.cloudflare.com`
		A	172.64.34.195^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cora.ns.cloudflare.com`
NS	`henrik.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c69^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`henrik.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c369^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`henrik.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2369^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`henrik.ns.cloudflare.com`
		A	108.162.195.105^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`henrik.ns.cloudflare.com`
		A	162.159.44.105^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`henrik.ns.cloudflare.com`
		A	172.64.35.105^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`henrik.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.75.28, 172.67.167.1
		IPv6 hints	2606:4700:3030::ac43:a701, 2606:4700:3031::6815:4b1c
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=247, name=cloudflare-ech.com
SOA	`cora.ns.cloudflare.com`dns@cloudflare.com serial=2408235415

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1784758948

Same first word

yu4.de

yu4.com

yu4.cn

yu4.org

yu4.biz

yu4.us

yu4.net

Similar names

y4u.cn

4yu.ca

y4u.com

u4y.pl

uy4.com

uy4.ru

4yu.ai

u4y.net

4yu.fr

uy4.cn

y4u.net

y4u.pl

4yu.com

y4u.ru

y4u.se

4yu.org

4yu.ch

y4u.org

u4y.co

y4u.nl

4yu.eu

4yu.ru

u4y.com

y4u.jp

y4u.co

4yu.at

4yu.nl

4yu.es

u4y.ru

y4u.at

y4u.in

4yu.se

y4u.co.il

4yu.biz

u4y.org

u4y.ch

y4u.eu

y4u.top

4yu.de

4uy.ru

u4y.nl

4yu.in

DNS History

15 records (6 active, 9 former)

●NScora.ns.cloudflare.com2026-07-14 → 2026-07-22 · 3 obs

○ 2026-02-20 23:57:06
● 2026-07-14 22:24:54
● 2026-07-22 22:41:28

●NShenrik.ns.cloudflare.com2026-07-14 → 2026-07-22 · 3 obs

○ 2026-02-20 23:57:06
● 2026-07-14 22:24:54
● 2026-07-22 22:41:28

○NSns1.fabulous.com2015-08-24 → 2017-04-20 · 4 obs

● 2015-08-24 09:55:30
● 2017-04-20 22:00:18
○ 2026-02-20 23:57:06
○ 2026-07-22 22:41:28

○NSns2.fabulous.com2015-08-24 → 2017-04-20 · 4 obs

● 2015-08-24 09:55:30
● 2017-04-20 22:00:18
○ 2026-02-20 23:57:06
○ 2026-07-22 22:41:28

○MXmail.b-io.co2015-08-24 → 2017-04-20 · 4 obs

● 2015-08-24 09:55:30
● 2017-04-20 22:00:18
○ 2026-02-20 23:57:06
○ 2026-07-22 22:41:28

●A104.21.75.282026-07-14 → 2026-07-22 · 3 obs

○ 2026-02-20 23:57:06
● 2026-07-14 22:24:54
● 2026-07-22 22:41:28

●A172.67.167.12026-07-14 → 2026-07-22 · 3 obs

○ 2026-02-20 23:57:06
● 2026-07-14 22:24:54
● 2026-07-22 22:41:28

○A208.48.81.1332015-08-24 → 2015-12-09 · 4 obs

● 2015-08-24 09:55:30
● 2015-12-09 03:26:56
○ 2016-03-13 01:48:22
○ 2026-07-22 22:41:28

○A208.48.81.1342015-08-24 → 2015-12-09 · 4 obs

● 2015-08-24 09:55:30
● 2015-12-09 03:26:56
○ 2016-03-13 01:48:22
○ 2026-07-22 22:41:28

○A208.48.81.1792015-08-24 → 2015-12-09 · 4 obs

● 2015-08-24 09:55:30
● 2015-12-09 03:26:56
○ 2016-03-13 01:48:22
○ 2026-07-22 22:41:28

●A2606:4700:3030::ac43:a7012026-07-14 → 2026-07-22 · 3 obs

○ 2026-02-20 23:57:06
● 2026-07-14 22:24:54
● 2026-07-22 22:41:28

●A2606:4700:3031::6815:4b1c2026-07-14 → 2026-07-22 · 3 obs

○ 2026-02-20 23:57:06
● 2026-07-14 22:24:54
● 2026-07-22 22:41:28

○A64.15.205.1002015-08-24 → 2015-12-09 · 4 obs

● 2015-08-24 09:55:30
● 2015-12-09 03:26:56
○ 2016-03-13 01:48:22
○ 2026-07-22 22:41:28

○A64.15.205.1012015-08-24 → 2015-12-09 · 4 obs

● 2015-08-24 09:55:30
● 2015-12-09 03:26:56
○ 2016-03-13 01:48:22
○ 2026-07-22 22:41:28

○A98.124.245.242016-03-13 → 2017-04-20 · 5 obs

○ 2015-12-09 03:26:56
● 2016-03-13 01:48:22
● 2017-04-20 22:00:18
○ 2026-02-20 23:57:06
○ 2026-07-22 22:41:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
yu4.org	cora.ns.cloudflare.com, henrik.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.195.105

NS records: cora.ns.cloudflare.com, henrik.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for yu4.org (unsigned zone)

⏱️ Timing

Total: 1048ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.167.1, 104.21.75.28`
AAAA	2	`2606:4700:3030::ac43:a701, 2606:4700:3031::6815:4b1c`
NS	2	`cora.ns.cloudflare.com, henrik.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`cora.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

yu4.org directs to four IP numbers, which are 104.21.75.28, 172.67.167.1, 2606:4700:3030::ac43:a701 and 2606:4700:3031::6815:4b1c.

www.8571.com.cn, 6cabang777.com, universitychurchofchrist.info and two other host names share IP numbers with yu4.org.

Name Servers

Two name servers handle the delegation for yu4.org: cora.ns.cloudflare.com and henrik.ns.cloudflare.com.

yu4.org uses the same name servers as several other domains — among them qf2.org, woodlandhealthcaretraining.com, radiolideranca.com.br and two more.

At least some of yu4.org's name servers are shared with other domains, for example yaoncrmo.shop, jxrwa.com, nusaduabeachgrill.com and two more.

It is common for these name servers to be used in conjunction with the name servers sean.ns.cloudflare.com, nile.ns.cloudflare.com and treasure.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

cora.ns.cloudflare.com resolves to 108.162.194.195, 162.159.38.195 and 172.64.34.195 among others, with 3 other IP addresses in total.

henrik.ns.cloudflare.com resolves to 108.162.195.105, 162.159.44.105 and 172.64.35.105 among others, with 3 other IP addresses in total.

yu4.org - robtex.com

yu4.org

org

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`yu4.org`

`org`