usmartsg.com

Observed Jul 27, 2026, 22:17 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

Not responding

Signed observation on record.

Also usesFacebook/Meta

tranco

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

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

usmartsg.com

A / AAAA

139.199.140.146

unattributedserves the site

ns-1121.awsdns-12.orgns-2036.awsdns-62.co.ukns-65.awsdns-08.comns-895.awsdns-47.net

awsdns-12.org + awsdns-62.co.uk + moreanswers its DNS

mxbiz2.qq.commxbiz1.qq.com

qq.comreceives its email

TLS

*.usmartsg.com

DigiCertissued its certificate

DNS Records

A 1

139.199.140.146

MX 2

10mxbiz2.qq.com
5mxbiz1.qq.com

TXT 2

v=spf1 include:spf.mail.qq.com ~all
facebook-domain-verification=psgi278vnvm85uo6wz8yx4b6koyahf

NS 4

ns-1121.awsdns-12.org
ns-2036.awsdns-62.co.uk
ns-65.awsdns-08.com
ns-895.awsdns-47.net

SOA 1

ns-895.awsdns-47.net awsdns-hostmaster.amazon.com

TLS Certificates (3)

Common Name	Issuer	Expires
`*.usmartsg.com`	C=US, O=DigiCert, Inc., CN=GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1	Sat, 26 Dec 2026 23:59:59 +0000
`GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1`	C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root G2	Tue, 14 Dec 2032 23:59:59 +0000
`DigiCert Global Root G2`	C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root CA	Sun, 09 Nov 2031 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 usmartsg.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_594867e9bbdeadb3
Output Hash: 7b50080aa9fa1003546d6b0fc8d441dac39aaa2d763873ae5b033754ced142f1
Signature: ed25519:374ae5ab0afd83f4dedc6c4014f5c85e271ca93da9ef53d755dbecbe3adfe93874ca9cf2b0fe36a6cff5e428f45411fbc6dcb4566c8c7bd66bc3f5e1ab46690a
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

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