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91
Total
95
DNS
95
Email
88
Security
55
Network
100
Availability
Domaincam.ac.uk
IPv41
IPv62
MX records1
StatusActive
Domain technical report

University of Cambridge

cam.ac.uk

The University of Cambridge is one of the world’s leading universities, with a rich history of radical thinking dating back to 1209.

Generated: 2026-08-08T18:09:24-05:00 · Cached result

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IPv41
IPv62
MX1
NS9

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

2 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

9 NS record(s); 2 or more required.

✓
SOA record10 / 10 pts · Dns

Authoritative zone record.

✓
DNSSEC chain15 / 15 pts · Dns

DS and DNSKEY detected.

!
CAA policy0 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

1 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

✓
DKIM20 / 20 pts · Mail

A DKIM selector was verified.

!
MTA-STS0 / 5 pts · Mail

Mail transport policy.

✓
TLS-RPT5 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

77 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers23 / 35 pts · Security

6 of 9 evaluated headers detected.

!
PTR reverse DNS0 / 30 pts · Network

PTR not detected.

i
IPv4 diversity20 / 35 pts · Network

Two or more IPv4 addresses receive full points.

✓
IPv6 connectivity35 / 35 pts · Network

AAAA availability.

✓
DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

✓
HTTP response40 / 40 pts · Availability

HTTP/2 200

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
23.185.0.2

AAAA

2 record(s)
2620:12a:8000::2
2620:12a:8001::2

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
0 cam-ac-uk.mail.protection.outlook.com.

TXT

16 record(s)
"9026cbf1-7b8b-4613-87ce-a46bda32c08f"
"v=spf1 include:_spf.cam.ac.uk include:spf.protection.outlook.com include:_spf.google.com include:spf.uk.odmad.quest-on-demand.com -all"
"atlassian-domain-verification=S5SLTUt0OLAN9mxNzSRE7Cwjz4YOzlAVb87kMqkz6FcVeqp9q2PX8wtErVchDQYH"
"google-site-verification=DzWWuhcpZ1B2FT5ftPCIV8rK6hbuLEEaojFzIt_YhSM"
"hpe-greenlake-domain-verification=78487863375a505250746c662d4236615a71794f322d47423172636354537362"
"access-domain-verification=80b9280e5d8d74cd9a01a3af64bba66df221437d7612cc895110546f3b86d2ce"
"QuoVadis=a2edaff3-bdc6-44c5-8550-2167fe7338c4"
"google-site-verification=vob_qUOVAbGehTQ74k1vnA1XCWJB2CSWwsP9fNdwALU"
"_l57xfo8xodfo7j6g0fb9zoljfwh18qt"
"jamf-site-verification=9Xc0IY8F9-nFQz_ItUdvSg"
"miro-verification=a1052e0584a21e3d2792bce42f69dc21def357fc"
"google-site-verification=WBy6QZ92OsuLOOPs8Zrr4GxorRnSu9H_aiLmyCjX-nI"
"_um3kem45o33chvq68mb4qyt72y57oow"
"have-i-been-pwned-verification=505eab056dca3ebf0a94cc28eeef0c31"
"airtable-verification=a44072da1d55edc25c09b3eb72f8cedd"
"dell-technologies-domain-verification=cam.ac.uk_b220a1b2-fe6b-4199-bae5-c07814bfc1e0_1768470629"

NS

9 record(s)
dns0.cl.cam.ac.uk.
auth2.dns.cam.ac.uk.
auth3.dns.cam.ac.uk.
dns0.eng.cam.ac.uk.
auth0.dns.cam.ac.uk.
auth1.dns.cam.ac.uk.
ns2.ic.ac.uk.
ns3.mythic-beasts.com.
ns1.mythic-beasts.com.

SOA

1 record(s)
primary.dns.cam.ac.uk. hostmaster.cam.ac.uk. 2935692477 1200 180 1209600 3600

CAA

0 record(s)
—

Not configured

DS

1 record(s)
17004 13 2 25425306C22124E8319210335A3085247EA8C74DF0BD0DD7FAAE5355 94D6C3D0

DNSKEY

2 record(s)
256 3 13 0hTKyqZBAp8eDtcIIvmsSNiO/1fV9uISjEibHmDL+LjxL1ii1OxB+eXK Cov1IITqdLBHf2YBr1YGCEqqbQUQnw==
257 3 13 Ey5kNV5aH1ZwuGEoJoN2dHe09PZu5u14jNf5bT0Iulf6ZiXlkaHfcdMO 5jscs+EhUO9S1v65Pfi3hY/myPRaaQ==

RRSIG

5 record(s)
SOA 13 3 3600 20260818092705 20260808082705 35322 cam.ac.uk. BrOue8Q6sD31AnVhgIRKSh1LRFCJFA+kXpPGVzQnEBL7+hY2UjgPj36Z T+Hhwqs7HCpXelr9YJbzEMIealrdlw==
TXT 13 3 3600 20260813002103 20260802235335 35322 cam.ac.uk. QlVcQYiQPj5CY4AGwLoOidjb0FKlrfjKr9PMe+KurlKdy8wNUGtKn/kc fDCcQig3uiKTqtHtE9O3pxacweHbgw==
NS 13 3 86400 20260813004138 20260802235334 35322 cam.ac.uk. Alnczb69HsK3mwDvkFjl6f0u3gbKxb0IO02VQ/5qYvmQSwpWSBUTxBAD Zf7EA9SFZGpWAO9pAwa9dguMKZb71A==
DS 8 3 3600 20260818144439 20260719131439 7336 ac.uk. H56g8BH+LeWE7lepHBjqFbJC1Zc9oo4EAf3nzdaUM9EBeHZ4OIbr0JCk OlzPPkwUV6YQEkfGmTzl8U+ZipnJZRSUA1TwqpdjmVFTHvqW2eZqQy6d Wrn4Cks3YcN5Sa99XbZm4wMgQpEqD+3yFHi8R3N4NSM5w+iMTFl9ppm/ svI=
MX 13 3 3600 20260813001715 20260802235335 35322 cam.ac.uk. JHnRveMGnZvOyyNRk9Ii5QjvLXCITm1f+J3Q9juDvCGdPacvHAvkGrPi toXN+hUuI0ssE7OCY6q2FIHm69dPcQ==

NSEC

1 record(s)
_70725fda8496826e25113edf0717ec1e.cam.ac.uk. A NS SOA MX TXT AAAA LOC NAPTR RRSIG NSEC DNSKEY

NSEC3

0 record(s)
—

Not configured

SRV

0 record(s)
—

Not configured

NAPTR

2 record(s)
100 10 "s" "x-eduroam:radius.tls" "" _radsec._tcp.roaming.ja.net.
50 50 "s" "SIPS+D2T" "" _sips._tcp.cam.ac.uk.

TLSA

0 record(s)
—

Not configured

SSHFP

0 record(s)
—

Not configured

SPF

Configured
v=spf1 include:_spf.cam.ac.uk include:spf.protection.outlook.com include:_spf.google.com include:spf.uk.odmad.quest-on-demand.com -all

DMARC

Configured
v=DMARC1; p=reject; pct=100; rua=mailto:dmarc-rua@dmarc.service.gov.uk, mailto:jiq3dpgf@ag.eu.dmarcian.com

DKIM

Selector selector1
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvXEAegwL0HeD3oBvzdhtUOjx+oKt5zpK6KPyn0eUNU10QrA8+KhRayvto/+4aiIYWtmn03pVXyMVl9K67bPkRrLreBYlc8ptPo3dVbr2m61LuqGHrewJDs+Ai3azaJ/6k0aK+RMM4GwaeMXjToYqOkOyo/Xez7wnNKkHTVHP74Ms8ASh6eWQR5otgGXtdIJ+4AgIW3jde6UrlIMR+6wM0vn/HnT2lenByMOjSONg3hE2Omitw+Gx7+XBS2KWRUMckAQT+ASBtcw9DBx2CXJ6VMSMsxTXTstPEBEBW6CfcRdqWVQl8dDupUymLMsMrb0Q4SEpn48pxfoeyUVE+rqcHQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
University of Cambridge
Description
The University of Cambridge is one of the world’s leading universities, with a rich history of radical thinking dating back to 1209.
Final URL
https://www.cam.ac.uk/
HTTP status
206

HTTP

Status
HTTP/2 200
Final URL
https://www.cam.ac.uk/
Version
3
Server
nginx
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Let's Encrypt
CN
cam.ac.uk
Valid from
2026-07-27T03:12:18-05:00
Valid until
2026-10-25T03:12:17-05:00
Days remaining
77
Protocol
TLSv1.3
Cipher
TLS_AES_128_GCM_SHA256

Security headers

6 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
✓
Referrer PolicyImplemented
✓
Permissions PolicyImplemented
—
Cross-Origin-Opener-PolicyNot detected
—
Cross-Origin-Embedder-PolicyNot detected
—
Cross-Origin-Resource-PolicyNot detected

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
23.185.0.2
40,30 ms
Cloudflare
1.1.1.1
23.185.0.2
25,36 ms
Quad9
9.9.9.9
23.185.0.2
26,40 ms
OpenDNS
208.67.222.222
23.185.0.2
139,91 ms
AdGuard
94.140.14.14
23.185.0.2
47,51 ms

IP, geolocation and ASNAssociated network information

23.185.0.2

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
216.73.217.62
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No

SMTPEmail port connectivity

cam-ac-uk.mail.protection.outlook.com

Port 25: Closed/unreachable - 24.3 ms - 
Port 465: Closed/unreachable - 4055.7 ms - 
Port 587: Closed/unreachable - 4021.2 ms -

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