du.ac.bd
Observed Jul 24, 2026, 01:58 UTC (8h 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
1 subdomain · tranco_100k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat du.ac.bd actually stands on - every host below is a signed observation
du.ac.bd
A / AAAA
103.221.252.190
unattributedserves the site
NS
dns1.du.ac.bddns2.du.ac.bd
ac.bdanswers its DNS
MX
aspmx.l.google.comalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx2.googlemail.com+3 more
Google Workspacereceives its email
TLS
du.ac.bd
Let's Encryptissued its certificate
DNS Records
A 1
103.221.252.190
MX 7
10aspmx.l.google.com20alt1.aspmx.l.google.com20alt2.aspmx.l.google.com30aspmx2.googlemail.com30aspmx3.googlemail.com30aspmx4.googlemail.com30aspmx5.googlemail.com
TXT 2
v=spf1 include:_spf.google.com ~allgoogle-gws-recovery-domain-verification=44766890
NS 2
dns1.du.ac.bddns2.du.ac.bd
SOA 1
dns1.du.ac.bd hostmaster.du.ac.bd
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
du.ac.bd |
C=US, O=Let's Encrypt, CN=YE2 | Sat, 03 Oct 2026 18:32:50 +0000 |
YE2 |
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_804d85dab2e837c6- Output Hash
b2c0103f056ca3cfe2cc9310b1147627606720098ec1d43d40c28e3e60f5592c- Signature
ed25519:d98838d094f54275d402527ebb57bf4cfc35a562c0a4c81bfb08e86a4b354d6e57136e609db73f86bda7d935f2b3214ac9b4e415824389467ee3d7e1e98ead0d- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast