Rank #6,075Updated November 10, 2026
port.ac.uk
Its email security grade is B. Its SSL certificate is issued by Sectigo Limited and is valid for 31 more days.
- Domain age
- —
- Technologies
- —
- Email security
- B
- SSL days left
- 31
Registration
| Name servers |
|---|
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 3.248.71.106 | 86400 |
| MX | aspmx.l.google.com 10 | 86400 |
| MX | alt1.aspmx.l.google.com 20 | 86400 |
| MX | aspmx2.googlemail.com 30 | 86400 |
| MX | aspmx4.googlemail.com 30 | 86400 |
| MX | aspmx3.googlemail.com 30 | 86400 |
| MX | alt2.aspmx.l.google.com 20 | 86400 |
| MX | aspmx5.googlemail.com 30 | 86400 |
| NS | dns0.port.ac.uk | 172800 |
| NS | dns1.port.ac.uk | 172800 |
| TXT | _globalsign-domain-verification=xqvYWm9syTayijselvIbYnPFCI4hwwrQQB4ac0jtgb | 86400 |
| TXT | google-site-verification=ypPYZSCt78tYNb0RXPofLp6Ci8V4dIfMH8DS4EvkwYw | 86400 |
| TXT | autodesk-domain-verification=LDC6vXOvq6g-IoQilToS | 86400 |
| TXT | google-site-verification=h_0fY5D3W7WNf2M9sw_gCJsLVloRynMBNSF5yTkoTBQ | 86400 |
| TXT | facebook-domain-verification=ph58tfqnpcpv1djag9pytnrkpcqraq | 86400 |
| TXT | google-site-verification=MG8G2wgSurJ1BJYRhOsZMXAKDeNSn8muTs-9ej0XsB4 | 86400 |
| TXT | QuoVadis=2397bf92-d6ee-4bf4-9d71-c1166fe9a390 | 86400 |
| TXT | amazonses:OwSONUbu7+zfk/nLBW1wF8X18S8gygJqGmAgCXAmMdo= | 86400 |
| TXT | MS=ms72065754 | 86400 |
| TXT | v=spf1 include:_spf.google.com ip4:148.197.0.0/16 include:servers.mcsv.net include:_ses.getbynder.com ip4:108.177.15.27 ip4:80.6.91.150 ip4:199.255.192.0/22 ip4:199.127.232.0/22 ip4:54.240.0.0/18 ip4:69.169.224.0/20 ip4:23.249.208.0/20 ip4:23.251.224.0/19 ip4:76.223.176.0/20 ip4:54.240.64.0/19 ip4:54.240.96.0/19 ip4:52.82.172.0/22 ip4:34.198.56.55 ip4:76.223.128.0/19 ip6:2a00:2381:db::/56 ip6:2a05:2080::/29 ip4:5.196.146.211 ip4:5.196.146.250 ip4:46.105.146.11 ip4:192.99.26.11 ip4:54.36.22.50 ip4:54.36.22.124 ip4:5.196.146.195 ip4:67.227.87.186 ip4:217.182.181.164 ip4:217.182.181.254 ip4:147.160.167.0/26 ip4:52.49.201.246 ip4:52.49.235.189 ip4:23.21.109.197 ip4:23.21.109.212 exists:%{i}._spf.mta.salesforce.com include:spf.planoncloud.com include:spf.protection.outlook.com -all | 86400 |
| TXT | docusign=a977bae2-af0c-4eb1-af30-0ba46d2db488 | 86400 |
| TXT | MS=ms83483494 | 86400 |
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | GB, Sectigo Public Server Authentication CA DV R36, Sectigo Limited |
| Expires | December 12, 2026 |
| Days remaining | 31 |
| Protocol | TLSv1.3 |
| Names | port.ac.uk, *.port.ac.uk, portsmouth.ac.uk, www.portsmouth.ac.uk |
Email security
BScore 85/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
- warnNo MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
- warnNo TLS-RPT record, so you won't hear about failed encrypted deliveries.
- warnNo BIMI record (optional: shows your logo next to your emails in supporting inboxes).
- goodSPF record found.
- goodSPF ends with -all: servers you have not listed are rejected (hard fail).
- goodDMARC policy is reject: mail that fails authentication is blocked.
- goodDMARC aggregate reports are sent to mailto:[email protected].
- goodDKIM keys found (selector: selector1, k1, s1, s2).
- good7 MX record(s) found. Mail is handled by Google Workspace.
About port.ac.uk
Does port.ac.uk protect its email with SPF and DMARC?
port.ac.uk scores 85/100 (grade B) for email security. No MTA-STS: mail sent to you can be downgraded to an unencrypted connection. No TLS-RPT record, so you won't hear about failed encrypted deliveries.
What are the name servers of port.ac.uk?
port.ac.uk uses dns0.port.ac.uk, dns1.port.ac.uk.