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Total

DNS

Email

Security

Network

100

Availability

Domainleeds.ac.uk

IPv42

IPv60

MX records1

StatusActive

Domain technical report

University of Leeds

leeds.ac.uk

The University of Leeds is a large UK higher education institution and part of the Russell Group of leading universities.

Generated: 2026-08-08T22:07:08-05:00 · Cached result

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IPv42

IPv60

MX1

NS4

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

2 IPv4 address(es) detected.

IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓

Name server redundancy20 / 20 pts · Dns

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

✓

SOA record10 / 10 pts · Dns

Authoritative zone record.

DNSSEC chain0 / 15 pts · Dns

Both DS and DNSKEY are required.

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

171 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers12 / 35 pts · Security

3 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: a629e06580ffa66f9.awsglobalaccelerator.com

✓

IPv4 diversity35 / 35 pts · Network

Two or more IPv4 addresses receive full points.

IPv6 connectivity0 / 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

2 record(s)

15.197.155.249
3.33.141.243

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

1 record(s)

0 uol.in.tmes.trendmicro.eu.

TXT

32 record(s)

"QuoVadis=667ec68b-855c-4f5e-9dd7-3a42e65350d9"
"ibmid=a3844846-f766-4dc2-b36d-b3a1ea622936"
"9D77190F-18EA-4BA3-BB46-3623C32454DF"
"QuoVadis=c95807fd-5441-4368-92f9-89f7d886406b"
"hcp-domain-verification=6292d17b816d22d21945c55a6f2093b98be91fd88b527f9e5c404a54422cb590"
"d365mktkey=H7oMz9BPJuptKAuxWp2y8cl8LDUpjlPMDM3T6Sk9Uzgx"
"tmes=3d7ed9c7f0822f2a261fe325fb1182b4"
"d365mktkey=BtFCHP47aVxbCvqSxLg0M2eiCqXx3xoev4hpDhQA52sx"
"iW4iUQkG7Ty2/YW35PpUiBJWmAiTwd6ZwqGDCotBwcLTBBjGNcVS+zviFmFB45sPdYK/g+zInG9wwEYA0u5F6A=="
"have-i-been-pwned-verification=bffd8f60dd6222676cdf3ee417db0c4c"
"d365mktkey=KfPxUvuZocIV0oFM32mJgWc5bPVjJerIJs3YgJaMlscx"
"DZC=PagXPRL"
"d365mktkey=Xod65r4yx1p3bZYtWvx77rh8TwXxXOZ2Y3j2nWNxCdgx"
"MS=ms61819594"
"pardot295242=d6f9e2a8b7d60948b44e83bd8cfcd846c6d8d5d474db03955aa11c39254daa73"
"yi7inkpcssphqbunrgcsrv5kc44xszwi._domainkey.rescomms.leeds.ac.uk"
"atlassian-domain-verification=9l4YorffoYbQAXi30qeeyK9nABMShCOaU0WqYv13WU/KLVdDQ9oIo6CHWH4s8PeA"
"d365mktkey=B3GPxfC7puhU84AxVlFvTaAoL85e4zxYXzv95EFhbsox"
"google-site-verification=02oJVjbWOYTIUy_HrU98JlkheQQ2zt-6wJ--_wsVN8Q"
"jamf-site-verification=R5A1Ysc6x1aEp68AtcyQ3Q"
"google-site-verification=pu1lR4CB8eBIkchN6OMOoS1gBDvMMtW1ZF7-ecXTdw8"
"tmes=71e7324cdd1904f654d7446ff0bc0e7b"
"facebook-domain-verification=03kt8kxw9kf6fpcmcfeak0d176236g"
"tmes=7dec6fa4ced73582138029de8265123d"
"BD0C-605F-E67F-C2F0-3283-C2A9-63FC-CADA"
"tmes=20478128d39695d944888e341904292e"
"v=spf1 ip4:194.82.12.4/32 ip4:172.166.14.167/32 ip4:20.49.212.144/28 ip4:20.77.170.14/32 include:spf.protection.outlook.com include:spf1.leeds.ac.uk include:spf.tmes.trendmicro.eu ~all"
"d365mktkey=4sql50yeu9cnn8jy52fwmp7e0"
"apple-domain-verification=OHOqmJHw1kOxLErw"
"tmes=ad3be6e5618c1e14e4d41bcddb66cec8"
"d365mktkey=JiKn3xEefZvBqfxb6r7PHCbpl75Ax632vK3Vxa7x1P0x"
"langdock-verify=FRGcUrG9975QOhYYAMk-YzXty9XrLBxIXMTPxLJqx3c"

NS

4 record(s)

dns.leeds.ac.uk.
ucsdns2.leeds.ac.uk.
ucsdns1.leeds.ac.uk.
ns12.ja.net.

SOA

1 record(s)

dns.leeds.ac.uk. hostmaster.dns.leeds.ac.uk. 2036633438 1800 300 604800 3600

CAA

0 record(s)

—

Not configured

DS

0 record(s)

—

Not configured

DNSKEY

0 record(s)

—

Not configured

RRSIG

0 record(s)

—

Not configured

NSEC

0 record(s)

—

Not configured

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.
100 10 "s" "aaa+auth:radius.tls.tcp" "" _radsec._tcp.openroaming.eduroam.uk.

TLSA

0 record(s)

—

Not configured

SSHFP

0 record(s)

—

Not configured

SPF

Configured

v=spf1 ip4:194.82.12.4/32 ip4:172.166.14.167/32 ip4:20.49.212.144/28 ip4:20.77.170.14/32 include:spf.protection.outlook.com include:spf1.leeds.ac.uk include:spf.tmes.trendmicro.eu ~all

DMARC

Configured

v=DMARC1; p=quarantine; sp=quarantine; rua=mailto:dmarc_rua@leeds.ac.uk, mailto:uol@dmarcrua.tmes.trendmicro.eu; ruf=mailto:dmarc_ruf@leeds.ac.uk; adkim=r; aspf=r; fo=1

DKIM

Selector selector1

v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQD2eG96R/umolQ2Z6G2nRhz4aTXV1/ICa6qUlQ9cYTB1nN18K61DhK0jra6q+5hqx1koIK9hzOA1UMijfTv2L2UUAopKrjgyafflypOM8iFnd4rERX/tqnR0kFaJvplEpLhYe9RMv5n9Z1ID3Er81j1BN29vkFcWaSZQ+bbWJA94QIDAQAB; n=1024,1456006418,1471731218

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

University of Leeds

Description

The University of Leeds is a large UK higher education institution and part of the Russell Group of leading universities.

Final URL

https://www.leeds.ac.uk/

HTTP status

206

HTTP

Status

HTTP/2 200

Final URL

https://www.leeds.ac.uk/

Version

Server

Web Server

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Amazon

leeds.ac.uk

Valid from

2025-12-28T18:00:00-06:00

Valid until

2027-01-27T17:59:59-06:00

Days remaining

171

Protocol

TLSv1.3

Cipher

TLS_AES_128_GCM_SHA256

Security headers

3 active

✓

HSTSImplemented

—

Content Security PolicyNot detected

✓

X-Content-Type-OptionsImplemented

✓

X-Frame-OptionsImplemented

—

Referrer PolicyNot detected

—

Permissions PolicyNot detected

—

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

15.197.155.249, 3.33.141.243

57,29 ms

Cloudflare

1.1.1.1

15.197.155.249, 3.33.141.243

124,98 ms

Quad9

9.9.9.9

15.197.155.249, 3.33.141.243

1.637,26 ms

OpenDNS

208.67.222.222

15.197.155.249, 3.33.141.243

242,65 ms

AdGuard

94.140.14.14

15.197.155.249, 3.33.141.243

200,67 ms

IP, geolocation and ASNAssociated network information

15.197.155.249

No data

success

country

region

city

asn

organization

isp

3.33.141.243

No data

success

country

region

city

asn

organization

isp

Visitor information

Visitor

216.73.217.62

reverse

country

country_code

region

city

latitude

longitude

isp

organization

asn

timezone

browser

Other

language

user_agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

is_bot

Yes

cloudflare

SMTPEmail port connectivity

uol.in.tmes.trendmicro.eu

Port 25: Closed/unreachable - 8.7 ms - 
Port 465: Closed/unreachable - 4021.8 ms - 
Port 587: Closed/unreachable - 4020.8 ms -

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