Rank #8,191Updated November 10, 2026
cf.ac.uk
Its email security grade is C. Its SSL certificate is issued by Let's Encrypt and is valid for 50 more days.
- Domain age
- —
- Technologies
- —
- Email security
- C
- SSL days left
- 50
Registration
| Name servers |
|---|
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 43.245.41.93 | 60 |
| MX | cf-ac-uk.mail.protection.outlook.com 10 | 3600 |
| NS | mnetidns01.cf.ac.uk | 3600 |
| NS | mnetidns02.cf.ac.uk | 3600 |
| NS | ns3.ja.net | 3600 |
| TXT | v=spf1 include:spf.protection.outlook.com exists:%{ir}.%{v}.arpa.spf.cardiff.ac.uk -all | 300 |
| TXT | scnv-verification=6f3b1b9a82b9b5523451253f5f83a571:ceea21c0764997f59294b16075e30844:c105b2bb57714b5bb7fab7a7f89e5767 | 300 |
| TXT | QuoVadis=c9b0353e-e6e2-46c8-984d-a09e98dbe402 | 300 |
| TXT | MS=ms63802573 | 300 |
| TXT | MS=ms60395318 | 300 |
| TXT | mentimeter-8d826a9f-35de-4930-a644-9856fcd72553 | 300 |
| TXT | google-site-verification=LdJePZTvkh_n5gePg7UE8Gis5jPJl0BuLA2t88EnxDM | 300 |
| TXT | google-gws-recovery-domain-verification=70005529 | 300 |
| TXT | apple-domain-verification=e2tZ15BPiDbMy6w2 | 300 |
| TXT | 8A8FC754-9517-4903-89F0-485BD355265C | 300 |
| TXT | ZOOM_verify_4DwfP9IMSouWxNoqvBZ6dg | 300 |
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, YE1, Let's Encrypt |
| Expires | December 30, 2026 |
| Days remaining | 50 |
| Protocol | TLSv1.3 |
| Names | cf.ac.uk |
Email security
CScore 65/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
- warnDMARC policy is none (monitoring only). Spoofed mail is still delivered.
- 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 aggregate reports are sent to mailto:[email protected].
- goodDKIM keys found (selector: selector1, selector2).
- good1 MX record(s) found. Mail is handled by Microsoft 365.
About cf.ac.uk
Does cf.ac.uk protect its email with SPF and DMARC?
cf.ac.uk scores 65/100 (grade C) for email security. DMARC policy is none (monitoring only). Spoofed mail is still delivered. No MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
What are the name servers of cf.ac.uk?
cf.ac.uk uses mnetidns01.cf.ac.uk, mnetidns02.cf.ac.uk, ns3.ja.net.