`criterion.org.uk`

DNSSEC	⚠️ Not signed
A	104.26.0.144^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.1.144^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.69.67^{🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`austin.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b46^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`austin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c146^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`austin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2146^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`austin.ns.cloudflare.com`
		A	108.162.193.70^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`austin.ns.cloudflare.com`
		A	172.64.33.70^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`austin.ns.cloudflare.com`
		A	173.245.59.70^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`austin.ns.cloudflare.com`
NS	`sureena.ns.cloudflare.com`
		A	2606:4700:50::a29f:267e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sureena.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c27e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sureena.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:227e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sureena.ns.cloudflare.com`
		A	108.162.194.126^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sureena.ns.cloudflare.com`
		A	162.159.38.126^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sureena.ns.cloudflare.com`
		A	172.64.34.126^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sureena.ns.cloudflare.com`
MX	`eu-smtp-inbound-1.mimecast.com` ⭐
		A	91.220.42.201^{🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	91.220.42.211^{🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	91.220.42.241^{🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	195.130.217.201^{🇬🇧 MIMECAST-UK195.130.217.0/24}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	195.130.217.211^{🇬🇧 MIMECAST-UK195.130.217.0/24}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	195.130.217.241^{🇬🇧 MIMECAST-UK195.130.217.0/24}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
MX	`eu-smtp-inbound-2.mimecast.com` ⭐
		A	91.220.42.201^{🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	91.220.42.211^{🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	91.220.42.241^{🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	195.130.217.201^{🇬🇧 MIMECAST-UK195.130.217.0/24}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	195.130.217.211^{🇬🇧 MIMECAST-UK195.130.217.0/24}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	195.130.217.241^{🇬🇧 MIMECAST-UK195.130.217.0/24}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
TXT	`0ed1fe018a15c581d00d0b4879991cda32df0cd6ed`
TXT	`MS=ms55676148`
TXT	`Sendinblue-code:0b75100da4b7f2e0210bd984fcb9278b`
TXT	`_globalsign-domain-verification=4hJYHMPMgDUHUPmcePjrq0OOsTGoCD55ja0EkArRyH`
TXT	`_globalsign-domain-verification=ROQjb2zvEpVoSlRXUf5YtkMs5xy6JgT9yb8_plC0W-`
TXT	`_globalsign-domain-verification=iBkyz0q0pp_7qg-gx5MA0zBc6E2r30GrPO0QKY3PnA`
TXT	`google-site-verification=E9L8KR1V1BQEbPymdIXRI0MiIlLGpuZ-i2cmjHbBAVk`
TXT	`v=spf1 ip4:86.111.168.160/28 ip4:212.20.236.193/29 include:146883156.spf08.hu...`
TXT	`vCqy+uTa5wy8wBCZe/E7iO0fjnHvQVuv9umwKhMp5w3yUBIsNWSG3JWBZctFW1NGFLrelCyiPdReb...`
HTTPS	HTTP/2 ✓ hints match
		IPv4 hints	104.26.0.144, 104.26.1.144, 172.67.69.67
SOA	`austin.ns.cloudflare.com`dns@cloudflare.com serial=2409676684

`org.uk`

	DNSSEC	⚠️ Not signed
	NS	`dns1.nic.uk` ⭐ ⚠️ Not in parent delegation
	NS	`dns2.nic.uk` ⚠️ Not in parent delegation
	NS	`dns3.nic.uk` ⚠️ Not in parent delegation
	NS	`dns4.nic.uk` ⚠️ Not in parent delegation
	NS	`nsa.nic.uk` ⚠️ Not in parent delegation
	NS	`nsb.nic.uk` ⚠️ Not in parent delegation
	NS	`nsc.nic.uk` ⚠️ Not in parent delegation
	NS	`nsd.nic.uk` ⚠️ Not in parent delegation
	SOA	`dns1.nic.uk`hostmaster@nominet.org.uk serial=1785729293

rank #581546 globally
rank #33588 in the tld
WOT: SAFE (71/100)

Same first word

Similar names

eritronic.com

ctornieri.com

certirion.de

intericor.com

eirtronic.com

rotinrice.com

intricore.com

reitronic.de

tricerion.com

erictorin.com

DNS History

7 records (7 active, 0 former)

●NSaustin.ns.cloudflare.com2026-05-12 → 2026-08-03 · 2 obs

● 2026-05-12 05:19:10
● 2026-08-03 03:59:56

●NSsureena.ns.cloudflare.com2026-05-12 → 2026-08-03 · 2 obs

● 2026-05-12 05:19:10
● 2026-08-03 03:59:56

●MXeu-smtp-inbound-1.mimecast.com2026-05-12 → 2026-08-03 · 2 obs

● 2026-05-12 05:19:10
● 2026-08-03 03:59:56

●MXeu-smtp-inbound-2.mimecast.com2026-05-12 → 2026-08-03 · 2 obs

● 2026-05-12 05:19:10
● 2026-08-03 03:59:56

●A104.26.0.1442026-05-12 → 2026-08-03 · 2 obs

● 2026-05-12 05:19:10
● 2026-08-03 03:59:56

●A104.26.1.1442026-05-12 → 2026-08-03 · 2 obs

● 2026-05-12 05:19:10
● 2026-08-03 03:59:56

●A172.67.69.672026-05-12 → 2026-08-03 · 2 obs

● 2026-05-12 05:19:10
● 2026-08-03 03:59:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
uk	dns1.nic.uk, nsb.nic.uk, nsa.nic.uk, dns2.nic.uk...	-
criterion.org.uk	austin.ns.cloudflare.com, sureena.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.70

NS records: austin.ns.cloudflare.com, sureena.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for criterion.org.uk (unsigned zone)

⏱️ Timing

Total: 742ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`104.26.1.144, 104.26.0.144...`
NS	2	`austin.ns.cloudflare.com, sureena.ns.cloudflare.com`
MX	2	`eu-smtp-inbound-1.mimecast.com (pri: 10), eu-smtp-inbound-2.mimecast.com (pri: 10)`
TXT	9	`0ed1fe018a15c581d00d0b4879991cda32df0cd6, MS=ms55676148...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2"]`
SOA	1	`austin.ns.cloudflare.com dns.cloudflare.`

Analysis

IP Addresses

criterion.org.uk points to three IP numbers, namely 104.26.0.144, 104.26.1.144 and 172.67.69.67.

voicy.network, tor4you.co.il, chat.aifiesta.ai and two other host names share IP numbers with criterion.org.uk.

Name Servers

The NS records for criterion.org.uk delegate to austin.ns.cloudflare.com and sureena.ns.cloudflare.com.

criterion.org.uk uses the same name servers as several other domains — among them spin-online-pinup.top, namanhr.com, jimgu.com and two more.

At least some of criterion.org.uk's name servers are shared with other domains, for example gotable.app, abrogatebase.click, nexumunitedmanagement.digital and two more.

It is common for these name servers to be used in conjunction with the name servers norah.ns.cloudflare.com, wells.ns.cloudflare.com and miki.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

austin.ns.cloudflare.com maps to 108.162.193.70, 172.64.33.70, 173.245.59.70 and 3 additional IP addresses.

sureena.ns.cloudflare.com maps to 108.162.194.126, 162.159.38.126, 172.64.34.126 and 3 additional IP addresses.

Mail Servers

Mail for criterion.org.uk is handled by two mail servers — eu-smtp-inbound-1.mimecast.com and eu-smtp-inbound-2.mimecast.com.

criterion.org.uk uses an identical mail server configuration to several other domains — among them esolution.net, hays.sk, driftbeachdubai.com and two more.

criterion.org.uk has at least partial mail server overlap with other domains such as osebergsolutions.no, ad.mmu.ac.uk, intranet.coop and two more.

Hostnames that resolve to 6 IP addresses:

eu-smtp-inbound-1.mimecast.com maps to 91.220.42.201, 91.220.42.211, 91.220.42.241 and 3 additional IP addresses.

eu-smtp-inbound-2.mimecast.com maps to 91.220.42.201, 91.220.42.211, 91.220.42.241 and 3 additional IP addresses.

eu-smtp-inbound-1.mimecast.com and eu-smtp-inbound-2.mimecast.com each have 91.220.42.201 IP addresses.

eu-smtp-inbound-1.mimecast.com and eu-smtp-inbound-2.mimecast.com each have 91.220.42.211 IP addresses.

eu-smtp-inbound-1.mimecast.com and eu-smtp-inbound-2.mimecast.com each have 91.220.42.241 IP addresses.

eu-smtp-inbound-1.mimecast.com and eu-smtp-inbound-2.mimecast.com each have 195.130.217.201 IP addresses.

eu-smtp-inbound-1.mimecast.com and eu-smtp-inbound-2.mimecast.com each have 195.130.217.211 IP addresses.

eu-smtp-inbound-1.mimecast.com and eu-smtp-inbound-2.mimecast.com each have 195.130.217.241 IP addresses.