eclass.edu.vn

Observed Jul 26, 2026, 11:24 UTC (6d 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.

Verify this receipt yourself + Watch this domain

Up right now

Email byGoogle (SPF sender)

Secured byLet's Encrypt

1 subdomain · domcop

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat eclass.edu.vn actually stands on - every host below is a signed observation

eclass.edu.vn

A / AAAA

103.1.236.212

unattributedserves the site

ns1.matbao.vnns2.matbao.vn

matbao.vnanswers its DNS

mail.eclass.edu.vn

Google (SPF sender)receives its email

TLS

eclass.edu.vn

Let's Encryptissued its certificate

DNS Records

A 1

103.1.236.212

MX 1

5mail.eclass.edu.vn

TXT 1

v=spf1 +a +mx +ip4:103.77.161.75 include:_spf.google.com include:spf.protection.outlook.com ~all

NS 2

ns1.matbao.vn
ns2.matbao.vn

SOA 1

ns1.matbao.vn admin.matbao.com

TLS Certificates (4)

Common Name	Issuer	Expires
`eclass.edu.vn`	C=US, O=Let's Encrypt, CN=YE1	Wed, 23 Sep 2026 19:22:12 +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)

www.eclass.edu.vn

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 receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for eclass.edu.vn. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/eclass.edu.vn">
  <img src="https://domaindrift.io/badge/eclass.edu.vn.svg"
       width="300" height="64" alt="DomainDrift signed observations for eclass.edu.vn">
</a>

Ed25519 Receipt

Receipt ID: rcpt_d27a8f2f7956ed48
Output Hash: ad86dc07b86be380ef0ef242a6d2c24814acacc04fb1b06407b089723ec7fef7
Signature: ed25519:4978789ab699f087b884db10b4d0d70aa3f128034b4c81d961486084c101ab814a50d4d0ed5d52c9a48296d8e462ec87fb9f1ec61d36a213d335ebcb08593d0a
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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