ustadmobile.com

Observed Jul 26, 2026, 21:54 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 byMicrosoft 365

Secured byLet's Encrypt

Also usesGoogle Search Console

domcop

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

INFRASTRUCTURE MAPwhat ustadmobile.com actually stands on - every host below is a signed observation

ustadmobile.com

A / AAAA

95.217.189.215

unattributedserves the site

dns1.registrar-servers.comdns2.registrar-servers.com

registrar-servers.comanswers its DNS

ustadmobile-com.mail.protection.outlook.com

Microsoft 365receives its email

TLS

*.ustadmobile.com

Let's Encryptissued its certificate

DNS Records

A 1

95.217.189.215

MX 1

10ustadmobile-com.mail.protection.outlook.com

TXT 4

OSSRH-85553
MS=ms53673807
v=spf1 include:spf.protection.outlook.com -all
google-site-verification=YhzQ1ZGMBMcNQKiPGlSvz4yIcx248ViBaYN8-9oCKvg

NS 2

dns1.registrar-servers.com
dns2.registrar-servers.com

SOA 1

dns1.registrar-servers.com hostmaster.registrar-servers.com

TLS Certificates (4)

Common Name	Issuer	Expires
`*.ustadmobile.com`	C=US, O=Let's Encrypt, CN=YE1	Sat, 10 Oct 2026 09:21:23 +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 receipt

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

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

Ed25519 Receipt

Receipt ID: rcpt_87cf8629279af3ef
Output Hash: 33bb7cda05adf135bdbea967d415ff97f063b5bfe166ab6978e60fc9eff568c1
Signature: ed25519:7e83db4a580468fa89f1b447b736c4506fe80109209fc1a9aca25d101abb52d8f132358093f6c51f9fbd9939c0d5a30449c513453d58249d5778bb2aa51a600a
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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