`cambridgegcsecomputing.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:5dec^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:d88b^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.93.236^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.216.139^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`cory.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b5d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cory.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c15d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cory.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:215d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cory.ns.cloudflare.com`
		A	108.162.193.93^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cory.ns.cloudflare.com`
		A	172.64.33.93^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cory.ns.cloudflare.com`
		A	173.245.59.93^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cory.ns.cloudflare.com`
NS	`tori.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ae7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tori.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0e7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`tori.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20e7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`tori.ns.cloudflare.com`
		A	108.162.192.231^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tori.ns.cloudflare.com`
		A	172.64.32.231^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tori.ns.cloudflare.com`
		A	173.245.58.231^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tori.ns.cloudflare.com`
MX	`mail.cambridgegcsecomputing.org` ⭐
		A	2606:4700:3030::6815:5dec^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	2606:4700:3036::ac43:d88b^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	104.21.93.236^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.67.216.139^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`webmail.cambridgegcsecomputing.org`⁽²⁰⁾
		A	2606:4700:3030::6815:5dec^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	2606:4700:3036::ac43:d88b^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	104.21.93.236^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.67.216.139^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.93.236, 172.67.216.139
		IPv6 hints	2606:4700:3030::6815:5dec, 2606:4700:3036::ac43:d88b
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=76, name=cloudflare-ech.com
SOA	`cory.ns.cloudflare.com`dns@cloudflare.com serial=2410929380

`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=1786563091

WOT: UNKNOWN (62/100)

Subdomains

webmail.cambridgegcsecomputing.org

mail.cambridgegcsecomputing.org

Same first word

cambridgegcsecomputing.org

DNS History

23 records (8 active, 15 former)

●NScory.ns.cloudflare.com2026-08-04 → 2026-08-12 · 3 obs

○ 2020-01-18 05:56:48
● 2026-08-04 15:24:18
● 2026-08-12 20:05:56

○NSemma.ns.cloudflare.com2015-06-17 → 2020-01-18 · 4 obs

● 2015-06-17 21:46:40
● 2020-01-18 05:56:48
○ 2026-08-04 15:24:18
○ 2026-08-12 20:05:56

○NSjay.ns.cloudflare.com2015-06-17 → 2020-01-18 · 4 obs

● 2015-06-17 21:46:40
● 2020-01-18 05:56:48
○ 2026-08-04 15:24:18
○ 2026-08-12 20:05:56

●NStori.ns.cloudflare.com2026-08-04 → 2026-08-12 · 3 obs

○ 2020-01-18 05:56:48
● 2026-08-04 15:24:18
● 2026-08-12 20:05:56

●MXmail.cambridgegcsecomputing.org2015-06-17 → 2026-08-12 · 2 obs

● 2015-06-17 21:46:40
● 2026-08-12 20:05:56

●MXwebmail.cambridgegcsecomputing.org2015-06-17 → 2026-08-12 · 2 obs

● 2015-06-17 21:46:40
● 2026-08-12 20:05:56

●A104.21.93.2362026-08-04 → 2026-08-12 · 3 obs

○ 2020-01-18 05:56:48
● 2026-08-04 15:24:18
● 2026-08-12 20:05:56

○A104.25.222.232015-11-02 → 2016-06-21 · 5 obs

○ 2015-06-17 21:46:40
● 2015-11-02 15:22:58
● 2016-06-21 10:06:26
○ 2017-02-20 07:44:20
○ 2026-08-12 20:05:56

○A104.25.223.232015-11-02 → 2016-06-21 · 5 obs

○ 2015-06-17 21:46:40
● 2015-11-02 15:22:58
● 2016-06-21 10:06:26
○ 2017-02-20 07:44:20
○ 2026-08-12 20:05:56

○A104.25.29.1012017-02-20 → 2017-02-20 · 4 obs

○ 2016-06-21 10:06:26
● 2017-02-20 07:44:20
○ 2020-01-18 05:56:48
○ 2026-08-12 20:05:56

○A104.25.30.1012017-02-20 → 2017-02-20 · 4 obs

○ 2016-06-21 10:06:26
● 2017-02-20 07:44:20
○ 2020-01-18 05:56:48
○ 2026-08-12 20:05:56

○A162.159.248.1402015-06-17 → 2015-06-17 · 3 obs

● 2015-06-17 21:46:40
○ 2015-11-02 15:22:58
○ 2026-08-12 20:05:56

○A162.159.249.1402015-06-17 → 2015-06-17 · 3 obs

● 2015-06-17 21:46:40
○ 2015-11-02 15:22:58
○ 2026-08-12 20:05:56

●A172.67.216.1392026-08-04 → 2026-08-12 · 3 obs

○ 2020-01-18 05:56:48
● 2026-08-04 15:24:18
● 2026-08-12 20:05:56

○A2400:cb00:2048:1::6819:1d652017-02-20 → 2017-02-20 · 4 obs

○ 2016-06-21 10:06:26
● 2017-02-20 07:44:20
○ 2020-01-18 05:56:48
○ 2026-08-12 20:05:56

○A2400:cb00:2048:1::6819:1e652017-02-20 → 2017-02-20 · 4 obs

○ 2016-06-21 10:06:26
● 2017-02-20 07:44:20
○ 2020-01-18 05:56:48
○ 2026-08-12 20:05:56

○A2400:cb00:2048:1::6819:de172015-11-02 → 2016-06-21 · 5 obs

○ 2015-06-17 21:46:40
● 2015-11-02 15:22:58
● 2016-06-21 10:06:26
○ 2017-02-20 07:44:20
○ 2026-08-12 20:05:56

○A2400:cb00:2048:1::6819:df172015-11-02 → 2016-06-21 · 5 obs

○ 2015-06-17 21:46:40
● 2015-11-02 15:22:58
● 2016-06-21 10:06:26
○ 2017-02-20 07:44:20
○ 2026-08-12 20:05:56

○A2400:cb00:2048:1::a29f:f88c2015-06-17 → 2015-06-17 · 3 obs

● 2015-06-17 21:46:40
○ 2015-11-02 15:22:58
○ 2026-08-12 20:05:56

○A2400:cb00:2048:1::a29f:f98c2015-06-17 → 2015-06-17 · 3 obs

● 2015-06-17 21:46:40
○ 2015-11-02 15:22:58
○ 2026-08-12 20:05:56

●A2606:4700:3030::6815:5dec2026-08-04 → 2026-08-12 · 3 obs

○ 2020-01-18 05:56:48
● 2026-08-04 15:24:18
● 2026-08-12 20:05:56

●A2606:4700:3036::ac43:d88b2026-08-04 → 2026-08-12 · 3 obs

○ 2020-01-18 05:56:48
● 2026-08-04 15:24:18
● 2026-08-12 20:05:56

○A78.137.113.122020-01-18 → 2020-01-18 · 4 obs

○ 2017-02-20 07:44:20
● 2020-01-18 05:56:48
○ 2026-08-04 15:24:18
○ 2026-08-12 20:05:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
cambridgegcsecomputing.org	tori.ns.cloudflare.com, cory.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.231

NS records: tori.ns.cloudflare.com, cory.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cambridgegcsecomputing.org (unsigned zone)

⏱️ Timing

Total: 566ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.216.139, 104.21.93.236`
AAAA	2	`2606:4700:3030::6815:5dec, 2606:4700:3036::ac43:d88b`
NS	2	`cory.ns.cloudflare.com, tori.ns.cloudflare.com`
MX	2	`mail.cambridgegcsecomputing.org (pri: 10, webmail.cambridgegcsecomputing.org (pri:`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`cory.ns.cloudflare.com dns.cloudflare.co`

Analysis

Hierarchy

webmail.cambridgegcsecomputing.org and mail.cambridgegcsecomputing.org are both subdomains of cambridgegcsecomputing.org.

IP Addresses

cambridgegcsecomputing.org points to the four IP addresses 104.21.93.236, 172.67.216.139, 2606:4700:3030::6815:5dec and 2606:4700:3036::ac43:d88b.

legalfirst.net, newlight.bg, www.banques.ma and two other host names share IP numbers with cambridgegcsecomputing.org.

Name Servers

DNS delegation for cambridgegcsecomputing.org points to two name servers: cory.ns.cloudflare.com and tori.ns.cloudflare.com.

cambridgegcsecomputing.org uses the same name servers as several other domains — among them cambridgeassessment.org, krptic.com, cem.org and two more.

The name servers of cambridgegcsecomputing.org overlap at least partially with those of other domains — among them cityofcoalgate.gov, viralix.com, euroinfopage.eu and two more.

These name servers commonly appear in combination with the name servers raquel.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

cory.ns.cloudflare.com has IP addresses 108.162.193.93, 172.64.33.93 and 173.245.59.93, plus 3 other.

tori.ns.cloudflare.com has IP addresses 108.162.192.231, 172.64.32.231 and 173.245.58.231, plus 3 other.

Mail Servers

Mail for cambridgegcsecomputing.org is handled by two mail servers — mail.cambridgegcsecomputing.org and webmail.cambridgegcsecomputing.org.

Each of the hosts mail.cambridgegcsecomputing.org and webmail.cambridgegcsecomputing.org points to four IP numbers: mail.cambridgegcsecomputing.org directs to 104.21.93.236, 172.67.216.139, 2606:4700:3030::6815:5dec and 2606:4700:3036::ac43:d88b and webmail.cambridgegcsecomputing.org points to 104.21.93.236, 172.67.216.139, 2606:4700:3030::6815:5dec and 2606:4700:3036::ac43:d88b.

Host names pointing to 2606:4700:3030::6815:5dec IP addresses: mail.cambridgegcsecomputing.org and webmail.cambridgegcsecomputing.org.

Host names pointing to 2606:4700:3036::ac43:d88b IP addresses: mail.cambridgegcsecomputing.org and webmail.cambridgegcsecomputing.org.

Host names pointing to 104.21.93.236 IP addresses: mail.cambridgegcsecomputing.org and webmail.cambridgegcsecomputing.org.

Host names pointing to 172.67.216.139 IP addresses: mail.cambridgegcsecomputing.org and webmail.cambridgegcsecomputing.org.

cambridgegcsecomputing.org - robtex.com