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90
Total
80
DNS
100
Email
81
Security
100
Network
100
Availability
Domaingre.ac.uk
IPv42
IPv61
MX records1
StatusActive
Domain technical report

Welcome to the University of Greenwich, London

gre.ac.uk

University of Greenwich in London and Kent was established in 1890. We are located on the banks of the River Thames in South London. Apply for our degree courses now.

Generated: 2026-08-10T06:52:31-05:00 · Cached result

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IPv42
IPv61
MX1
NS4

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

2 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

1 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-STS5 / 5 pts · Mail

Mail transport policy.

✓
TLS-RPT5 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

42 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers16 / 35 pts · Security

4 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: gre.ac.uk

✓
IPv4 diversity35 / 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/1.1 200 OK

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

2 record(s)
193.37.244.176
193.37.244.43

AAAA

1 record(s)
64:ff9b::c125:f42b

CNAME

0 record(s)
—

Not configured

MX

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

TXT

20 record(s)
;; communications error to 69.64.44.20#53: timed out
"QuoVadis=3442e2cc-adde-458b-abcf-0ad06be321d0"
"mentimeter-1ba3a55c-72ed-4efa-8ada-08c8b6bca041"
"MS=ms98869453"
"atlassian-sending-domain-verification=2b881738-ddf6-406d-abba-0a22b6409768"
"google-site-verification=au_hazxdi_9P-aRlKRzGKeZvKJhqRkQ4dapUzz9fKks"
"v=spf1 include:spf.gre.ac.uk include:servers.mcsv.net include:customers.clickdimensions.com include:eu._netblocks.mimecast.com include:spf.protection.outlook.com include:spf.mail.wpmhost.net ~all"
"adobe-idp-site-verification=eb297538-caea-44b2-aeea-d79bdc4e0ada"
"work-accounts-domain-verification=UCX7pbmvf3fq3n7QdXFYDoXyAV3RHW"
"atlassian-domain-verification=dplEjcokH6XvdcFVJwWtv57LlVolezzOFP9cPNfjJ1K6J14NCCfalrt/E8rOUknu"
"EUHV6XIVXL3RBTZAAFJ93GSXJZDGDYCHHA5HQ2IAD"
"QuoVadis=fb9b2b1c-c66b-40f8-8758-93477faa778b"
"miro-verification=c95d4fd247e112a8766000a2c7e8bd9dea0c866e"
"adobe-idp-site-verification=77bd0eb9-ed3c-42ba-8f99-ca29845a37e5"
"google-site-verification=NEama_ZWkCi2h1lzESuORNJzxKOJuY_LuxosqLcoLF8"
"twilio-domain-verification=36f764eb2302d3d74f857a22bcbec20b"
"onetrust-domain-verification=5199a670800e4ba28feea8bba2e2d0b5"
"rhino_accounts=5bbeb235b62264f565bdbd6a86d1f2a9"
"IdjFjUzsyvULZw/91tRQCOwWMywlwHGk/iqQOH6VpvGDGUIkW1sbX/lfVCYY6IyOThM1akuM4Jg/BAZYhp+9yw=="
"google-site-verification=aRWecEvWLGdAqCUB3M7tECNLmVadrcQni28eHvDljzA"

NS

4 record(s)
gm-idns-2.gre.ac.uk.
gm-edns-1.gre.ac.uk.
ns3.ja.net.
me-edns-1.gre.ac.uk.

SOA

1 record(s)
gm-edns-1.gre.ac.uk. postmaster.gre.ac.uk. 864 10800 3600 2419200 900

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

1 record(s)
100 10 "s" "x-eduroam:radius.tls" "" _radsec._tcp.roaming.ja.net.

TLSA

0 record(s)
—

Not configured

SSHFP

0 record(s)
—

Not configured

SPF

Configured
v=spf1 include:spf.gre.ac.uk include:servers.mcsv.net include:customers.clickdimensions.com include:eu._netblocks.mimecast.com include:spf.protection.outlook.com include:spf.mail.wpmhost.net ~all

DMARC

Configured
v=DMARC1;p=none;rua=mailto:183ec6bd7459946@rep.dmarcanalyzer.com;ruf=mailto:183ec6bd7459946@for.dmarcanalyzer.com;fo=1;

DKIM

Selector selector1
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC3iGdbZFwH0e6i1MEPQc1JPevbsckwY/a7ub7nzKycR98TiKLA+pv1gieJd2TE4E9pMVoiDIWJV8TyVICLPRNbi2b35yBOub7r0QUjlPmmGtx/3/kDZTMRrvLzTZ1uJGGO+IKBrS6jk0L7boLDBgg7zsA+zE/EE4P8EHJfT6vZFwIDAQAB; n=1024,1450859721,1

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Welcome to the University of Greenwich, London
Description
University of Greenwich in London and Kent was established in 1890. We are located on the banks of the River Thames in South London. Apply for our degree courses now.
Final URL
https://www.gre.ac.uk/
HTTP status
200

HTTP

Status
HTTP/1.1 200 OK
Final URL
https://www.gre.ac.uk/
Version
2
Server
BigIP
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Sectigo Limited
CN
www.gre.ac.uk
Valid from
2026-03-05T18:00:00-06:00
Valid until
2026-09-21T18:59:59-05:00
Days remaining
42
Protocol
TLSv1.2
Cipher
ECDHE-RSA-AES256-GCM-SHA384

Security headers

4 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
✓
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
193.37.244.176, 193.37.244.43
53,52 ms
Cloudflare
1.1.1.1
193.37.244.176, 193.37.244.43
437,89 ms
Quad9
9.9.9.9
193.37.244.176, 193.37.244.43
253,67 ms
OpenDNS
208.67.222.222
193.37.244.176, 193.37.244.43
253,47 ms
AdGuard
94.140.14.14
193.37.244.176, 193.37.244.43
219,46 ms

IP, geolocation and ASNAssociated network information

193.37.244.176

No data
success
No
country
region
city
asn
organization
isp

193.37.244.43

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

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

Port 25: Closed/unreachable - 36.5 ms - 
Port 465: Closed/unreachable - 4004.9 ms - 
Port 587: Closed/unreachable - 4017.9 ms -

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