mbstu.ac.bd
Observed Aug 16, 2026, 11:48 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
Google WorkspaceSecured byLet's Encrypt
Let's EncryptAlso usesGoogle Search Console
Google Search Consolemajestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat mbstu.ac.bd actually stands on - every host below is a signed observation
mbstu.ac.bd
A / AAAA
103.157.135.180
unattributedserves the site
NS
ds2.bdren.net.bdds1.bdren.net.bd
net.bdanswers its DNS
MX
alt3.aspmx.l.google.comaspmx.l.google.comalt2.aspmx.l.google.comalt1.aspmx.l.google.com+1 more
Google Workspacereceives its email
TLS
*.mbstu.ac.bd
Let's Encryptissued its certificate
DNS Records
A 1
103.157.135.180
MX 5
10alt3.aspmx.l.google.com1aspmx.l.google.com5alt2.aspmx.l.google.com5alt1.aspmx.l.google.com10alt4.aspmx.l.google.com
TXT 3
google-site-verification=55iVG3_-XOd5BgfklX0IIAtYwKLW3aEg14_dHkBxpVUgoogle-gws-recovery-domain-verification=64013270v=spf1 ip4:103.157.135.80 ip4:103.28.121.80 +a +mx include:_spf.google.com ~all
NS 2
ds2.bdren.net.bdds1.bdren.net.bd
SOA 1
ds1.bdren.net.bd webhost.bdren.net.bd
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
*.mbstu.ac.bd |
C=US, O=Let's Encrypt, CN=YR2 | Mon, 21 Sep 2026 14:02:21 +0000 |
YR2 |
C=US, O=ISRG, CN=Root YR | Sat, 02 Sep 2028 23:59:59 +0000 |
Root YR |
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; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_e92684d07ca5ac58- Output Hash
71dfc8a137fc921023b3a018e5cb0e74980683232d3a69ed88776aa1e6be60da- Signature
ed25519:e4dbde8e4f2ce350fd504721bce722949d2225b3b1247b79dc0a35dce204ad16a88bae3b30a6de5979313c8e34088b1cde26246d7c20c2d0097f4fc127580c04- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast