ucsc.edu
Observed Jul 18, 2026, 12:08 UTC (9h ago). Every field below was attested with an Ed25519 signature at scan time.
Up right now
Email byGoogle Workspace
Secured byLet's Encrypt
Also usesDocuSignAtlassianGoogle Search Console
IPv6 · education_expanded
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat ucsc.edu actually stands on - every host below is a signed observation
ucsc.edu
A / AAAA
37.16.20.2302a09:8280:1::42:42ec:0
2a09serves the site
NS
ns.zocalo.netadns1.ucsc.eduadns2.ucsc.edu
zocalo.net + ucsc.eduanswers its DNS
MX
alt1.aspmx.l.google.comaspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.com+1 more
Google Workspacereceives its email
TLS
ucsc.edu
Let's Encryptissued its certificate
DNS Records
A 1
37.16.20.230
AAAA 1
2a09:8280:1::42:42ec:0
MX 5
5alt1.aspmx.l.google.com1aspmx.l.google.com10alt3.aspmx.l.google.com10alt4.aspmx.l.google.com5alt2.aspmx.l.google.com
TXT 24
9O98HIXRENZDBS4B49HG3EGSGUMD1SB71E1OLS1WGdocusign=92d2ff42-85b4-49d3-a7d4-ff6206c6b7daatlassian-domain-verification=LT04D8PQ6rZDOYwwtkO66srjecUfj6tf1GAHT3MwwC9wt9hRhzj2gMIa4LGQO1PWamazonses:OLdo8B8RSoAxJeaMNhByxa+OHC80Gzqzze41wXllhgE=apple-domain-verification=XO9icURQtTK4967R2o4e1vfscfmdnoc50n5n46n340virtru-site-verify=PbFPJQrlhOQuDphjnRmvQBT7NLpufe9o8IIjwsUbgoogle-site-verification=YKp9SeXigjb7PuNbHQlI53u7up6azjlipnWnMcQDl8Aatlassian-domain-verification=o4jKqspwzy6t1dhudUEPmQkJQXHUCdA4N1FBCLN2EU345AFSuN8faLnW6Msa84ZBbrevo-code:22a68b537c51751441d18a254169d3ff
NS 3
ns.zocalo.netadns1.ucsc.eduadns2.ucsc.edu
SOA 1
adns1.ucsc.edu hostmaster.ucsc.edu
SRV 5
alt3.xmpp-server.l.google.com:5269 p20alt2.xmpp-server.l.google.com:5269 p20alt1.xmpp-server.l.google.com:5269 p20xmpp-server.l.google.com:5269 p10alt4.xmpp-server.l.google.com:5269 p20
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
ucsc.edu |
C=US, O=Let's Encrypt, CN=YE1 | Fri, 11 Sep 2026 23:42:03 +0000 |
YE1 |
C=US, O=ISRG, CN=Root YE | Sat, 02 Sep 2028 23:59:59 +0000 |
Root YE |
C=US, O=Internet Security Research Group, CN=ISRG Root X2 | Thu, 02 Sep 2032 23:59:59 +0000 |
ISRG Root X2 |
C=US, O=Internet Security Research Group, CN=ISRG Root X1 | Thu, 02 Sep 2032 23:59:59 +0000 |
Subdomains (0)
None observed.
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; nothing leaves your machine.
Verify this receiptEd25519 Receipt
- Receipt ID
29ece481-577d-47e7-8ade-3c13be8ce360- Output Hash
dbb691d84c8451385ccf5bff8f1602b95808339d46d1f5151ee9fcb26aaebb0d- Signature
ed25519:b8f0c8db80f64d236f4d96269be3da96a9bcf14db72dc9ce7983007ecc2779a9717d7d47114368574c87075173af5b30c692cfb225b4e2401fec9c7736339105- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast