`opencourseware.co.uk`

DNSSEC	🔒 Signed (DS record present)
A	198.49.23.144^{🇺🇸 SQUARESPACE-1198.49.23.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
NS	`ns-cloud-b1.googledomains.com` ⭐
		A	2001:4860:4802:32::6b^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-b1.googledomains.com`
		A	216.239.32.107^{🇺🇸 Google216.239.32.0/24}
			PTR	`ns-cloud-b1.googledomains.com`
NS	`ns-cloud-b2.googledomains.com`
		A	2001:4860:4802:34::6b^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-b2.googledomains.com`
		A	216.239.34.107^{🇺🇸 Google216.239.34.0/24}
			PTR	`ns-cloud-b2.googledomains.com`
NS	`ns-cloud-b3.googledomains.com`
		A	2001:4860:4802:36::6b^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-b3.googledomains.com`
		A	216.239.36.107^{🇺🇸 Google216.239.36.0/24}
			PTR	`ns-cloud-b3.googledomains.com`
NS	`ns-cloud-b4.googledomains.com`
		A	2001:4860:4802:38::6b^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-b4.googledomains.com`
		A	216.239.38.107^{🇺🇸 Google216.239.38.0/24}
			PTR	`ns-cloud-b4.googledomains.com`
SOA	`ns-cloud-b1.googledomains.com`cloud-dns-hostmaster@google.com serial=4

`co.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=1776627842

rank #169873 globally
rank #13964 in the tld
WOT: SAFE (74/100)

Same first word

opencourseware.me

opencourseware.online

opencourseware.org

opencourseware.net

opencourseware.eu

opencourseware.com

opencourseware.co.uk

opencourseware.de

Similar names

opensourceware.net

opensourceware.com

opensourcewear.com

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
uk	nsb.nic.uk, dns4.nic.uk, nsa.nic.uk, nsc.nic.uk...	-
opencourseware.co.uk	ns-cloud-b2.googledomains.com, ns-cloud-b4.googledomains.com, ns-cloud-b1.googledomains.com, ns-cloud-b3.googledomains.com	-

✅ Authoritative Response

Server:216.239.38.107

NS records: ns-cloud-b2.googledomains.com, ns-cloud-b4.googledomains.com, ns-cloud-b1.googledomains.com, ns-cloud-b3.googledomains.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 600ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`198.49.23.144`
NS	4	`ns-cloud-b2.googledomains.com, ns-cloud-b1.googledomains.com...`
SOA	1	`ns-cloud-b1.googledomains.com cloud-dns-`

Analysis

IP Addresses

opencourseware.co.uk resolves to a single IP address: 198.49.23.144.

Other host names including drperl.com, stephanchong.com, fitforkindness.org, bellybowl.net and ifriedman.com share IP numbers with opencourseware.co.uk.

Name Servers

opencourseware.co.uk is delegated to four name servers: ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com, ns-cloud-b3.googledomains.com and ns-cloud-b4.googledomains.com.

opencourseware.co.uk at least partially shares name servers with other domains, including zkhardware.com, tropicalbuildings.org, squier-talk.com, passsalt.com and emosunshine.com.

Hosts with two IP numbers:

Host ns-cloud-b1.googledomains.com points to 2001:4860:4802:32::6b and 216.239.32.107

Host ns-cloud-b2.googledomains.com points to 2001:4860:4802:34::6b and 216.239.34.107

Host ns-cloud-b3.googledomains.com points to 2001:4860:4802:36::6b and 216.239.36.107

Host ns-cloud-b4.googledomains.com points to 2001:4860:4802:38::6b and 216.239.38.107

opencourseware.co.uk - robtex.com