sbc.edu
Observed Jul 21, 2026, 17:39 UTC (3d 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 byLet's Encrypt
Also usesFacebook/Meta
1 subdomain · tranco_100k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat sbc.edu actually stands on - every host below is a signed observation
sbc.edu
A / AAAA
44.211.110.75
unattributedserves the site
NS
etta.ns.cloudflare.comnoel.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
aspmx.l.google.comalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx2.googlemail.com+3 more
Google Workspacereceives its email
TLS
sbc.edu
Let's Encryptissued its certificate
DNS Records
A 1
44.211.110.75
MX 7
10aspmx.l.google.com20alt1.aspmx.l.google.com20alt2.aspmx.l.google.com30aspmx2.googlemail.com30aspmx3.googlemail.com30aspmx4.googlemail.com30aspmx5.googlemail.com
TXT 13
3tigsp4l0ja3id5pehjrgmmkt466foqnc8oqoudhd0kd2i63depc6h4au150v4s1rnvc2om8tbbmhv6vLQifQ1/L7bziBzn1jt5VjsHsUDy6cOJriYArL3X50=MS=ms76208811XfaFC2gapple-domain-verification=fv343s8YTyZrJcKhcp78il21dk5jrsm9v98njf992hfacebook-domain-verification=j4dg6qycw121x1qtofsp0rdhyf1vyul94bjhav9ivrsmth2pfkjshqnr
NS 2
etta.ns.cloudflare.comnoel.ns.cloudflare.com
SOA 1
etta.ns.cloudflare.com dns.cloudflare.com
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
sbc.edu |
C=US, O=Let's Encrypt, CN=YE1 | Thu, 17 Sep 2026 16:14:31 +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 (1)
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
rcpt_5c05551e27935861- Output Hash
6192eec1003c0099a56d2d8a21db97f0c5d5184e237c8f31a697792edc7c0097- Signature
ed25519:9acca9db0cb8d514ea4660eb80a14bcb0d5370ef918dd7247386941b34520ba7a7aa7a47c329607e06a31f6995ed00bf16c8f7694d050b14ac6a082f959c820e- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast