Rank #2,451Updated November 10, 2026
tcd.ie
Trinity College Dublin
The site runs on Amazon CloudFront, cdnjs, jQuery and 4 other technologies. Its email security grade is B. Its SSL certificate is issued by Hellenic Academic and Research Institutions CA and is valid for 88 more days.
- Domain age
- —
- Technologies
- 7
- Email security
- B
- SSL days left
- 88
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 15.197.242.139 | 300 |
| A | 3.33.249.246 | 300 |
| MX | tcd-ie.mail.protection.outlook.com 10 | 1465 |
| NS | auth-ns3.tcd.ie | 3600 |
| NS | auth-ns2.ucd.ie | 3600 |
| NS | auth-ns1.tcd.ie | 3600 |
| NS | auth-ns2.tcd.ie | 3600 |
| TXT | dell-technologies-domain-verification=tcd.ie_e68f91b5-b6b5-4a56-8196-a2821b60705d_1760793096 | 3600 |
| TXT | google-site-verification=535E0mjM6BC8LKGeWZPiDTUfBWWVRO6df5G5Gxz9CYE | 3600 |
| TXT | brevo-code:70df7540dafa8ea20f0eccbc493bb5ae | 3600 |
| TXT | docusign=7a164078-c20a-4d3e-a1ce-87b780e3850e | 3600 |
| TXT | klaviyo-site-verification=Tvbv8j | 3600 |
| TXT | docusign=08237f08-1bc7-4ced-866f-2f091ca1e091 | 3600 |
| TXT | amazonses:94slst6Hz90gKbyQVRj88Jrtkk//vCnWShfHzXbjfRU= | 3600 |
| TXT | apple-domain-verification=6d6n3eRPNHXeQzIv | 3600 |
| TXT | d365mktkey=jHusVOIxhFdqyiqVNzZIAZbf5JO9KYHH2xAmqQ4FhSAx | 3600 |
| TXT | google-site-verification=UBheMj-WKimynXvOEXFLk1-PUd8B6S91wIea98PFIuA | 3600 |
| TXT | LS0wGCXdOiSqamEg/ogaY8TFrKtppR0sIAYcLNO7M38AoQDAXMqFhjVv3zazNI4Tb/BvzZONCn8xReirme7RYQ== | 3600 |
| TXT | v=spf1 ip4:134.226.14.40 ip4:134.226.251.0/21 include:spf.protection.outlook.com include:_spf.google.com include:netaffinity.net include:_spf.eu.messagegears.net include:mh.blackboard.com -all | 3600 |
Technology stack
JavaScript library
Security
Tag manager
Video
Web server
Analytics and advertising IDs
google_tag_manager:GTM-KTX8CVSSL certificate
| Valid | Valid |
|---|---|
| Issuer | GR, GEANT TLS RSA 1, Hellenic Academic and Research Institutions CA |
| Expires | February 7, 2027 |
| Days remaining | 88 |
| Protocol | TLSv1.3 |
| Names | *.tcd.ie, tcd.ie, www.idstilda.tcd.ie, www.histories-humanities.tcd.ie, www.tilda.tcd.ie, www.chemistry.tcd.ie |
Email security
BScore 81/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
- warnSubdomains use a weaker policy (sp=none) than the main domain (p=reject).
- 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], mailto:[email protected].
- goodDKIM keys found (selector: selector1, k2, s1, s2, mail).
- good1 MX record(s) found. Mail is handled by Microsoft 365.
Homepage metadata
| Title | Trinity College Dublin |
|---|---|
| Language | en |
| Indexable | Yes |
| Word count | 478 |
About tcd.ie
What technology does tcd.ie use?
We detected 7 technologies on tcd.ie, including Amazon CloudFront, cdnjs, jQuery, HSTS, Google Tag Manager, YouTube.
Does tcd.ie protect its email with SPF and DMARC?
tcd.ie scores 81/100 (grade B) for email security. Subdomains use a weaker policy (sp=none) than the main domain (p=reject). No MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
What are the name servers of tcd.ie?
tcd.ie uses auth-ns3.tcd.ie, auth-ns2.ucd.ie, auth-ns1.tcd.ie, auth-ns2.tcd.ie.