upc.edu
Observed Aug 10, 2026, 20:43 UTC (13h ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation - watch it for 5-minute checks.
Up right now
Email byGoogle Workspace
Secured byHellenic Academic and Research Institutions CA
Also usesFacebook/MetaGoogle Search Console
8 subdomains · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat upc.edu actually stands on - every host below is a signed observation
upc.edu
A / AAAA
147.83.2.135
unattributedserves the site
NS
ns1.cesca.catns2.cesca.catns1.upc.eduns2.upc.edu
cesca.cat + upc.eduanswers its DNS
MX
alt2.aspmx.l.google.comalt3.aspmx.l.google.comaspmx.l.google.comalt1.aspmx.l.google.com+1 more
Google Workspacereceives its email
TLS
www.upc.edu
Hellenic Academic and Research Institutions CAissued its certificate
DNS Records
A 1
147.83.2.135
MX 5
5alt2.aspmx.l.google.com10alt3.aspmx.l.google.com1aspmx.l.google.com5alt1.aspmx.l.google.com10alt4.aspmx.l.google.com
TXT 11
facebook-domain-verification=njmvfgzqisovaytxj5f8up1ovvrf3qbrevo-code:1f3f68c59c45afb7f1aa82e0fa5f50c9MS=5F57EA05461D4811AEF4C3F8ED0F52F53DBD8A4Bvoje86dvmac5sh6b3s8fgdf179a81b366c-42d9-43bd-89d3-040fe23f50cdv=spf1 include:_spf1main.upc.edu include:_spf1secondary.upc.edu include:_spf2lsi.upc.edu include:_spf4fib.upc.edu ?all1687262495881google-site-verification=qFT1lJveXpwibVv5f8M5BaDBWOhxDSjuvwfv_awou4Y1657696626453HARICA-qJOZzLVfwzoOfNl7K8L
NS 4
ns1.cesca.catns2.cesca.catns1.upc.eduns2.upc.edu
SOA 1
ns.upc.edu hostmaster.upcnet.es
DMARC_RECORDS 1
v=DMARC1; p=quarantine; pct=0; rua=mailto:dmarc.rua@upc.edu
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
www.upc.edu |
C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS RSA 1 | Sat, 06 Feb 2027 15:23:25 +0000 |
GEANT TLS RSA 1 |
C=GR, O=Hellenic Academic and Research Institutions CA, CN=HARICA TLS RSA Root CA 2021 | Sat, 31 Dec 2039 11:14:59 +0000 |
HARICA TLS RSA Root CA 2021 |
C=GR, L=Athens, O=Hellenic Academic and Research Institutions Cert. Authority, CN=Hellenic Academic and Research Institutions RootCA 2015 | Fri, 31 Aug 2029 07:41:54 +0000 |
Subdomains (8)
The proof
Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_6b5a333d1e1449af- Output Hash
701857417ba27a24717b5836000f87a4b024f890af4dc9a2edf2839b5d0d3f6d- Signature
ed25519:8aac6575c328c9f25694dcb81460f676e86053ff6c5c373dfbc29f4b8ba3a6f6bb3e7e75e371de9acf6afb0dcf67800a8f87b18a0b0d5a3603941954543da404- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast