usmart.sg
Observed Aug 2, 2026, 10:27 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
Secured byDigiCert
Also usesGoogle Search Console
domcop
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat usmart.sg actually stands on - every host below is a signed observation
usmart.sg
A / AAAA
47.242.182.40
unattributedserves the site
NS
ns-1492.awsdns-58.orgns-1978.awsdns-55.co.ukns-400.awsdns-50.comns-639.awsdns-15.net
awsdns-58.org + awsdns-55.co.uk + moreanswers its DNS
MX
mxbiz2.qq.commxbiz1.qq.com
qq.comreceives its email
TLS
*.usmart.sg
DigiCert Incissued its certificate
DNS Records
A 1
47.242.182.40
MX 2
10mxbiz2.qq.com5mxbiz1.qq.com
TXT 4
v=spf1 include:spf.mail.qq.com ~allgoogle-site-verification=GpRKGXasKiXU-h_rfDc5oGJUTyknkcxUPQ59As-BwZwgoogle-site-verification=hsDBPmFXPU_Tu_LWFmQT2tsgtId-MmdXKXD67QpXKEUtiktok-developers-site-verification=IPo2hEI55ZDaqVztdJVQwcVgqVxl3nb3
NS 4
ns-1492.awsdns-58.orgns-1978.awsdns-55.co.ukns-400.awsdns-50.comns-639.awsdns-15.net
SOA 1
ns-639.awsdns-15.net awsdns-hostmaster.amazon.com
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
*.usmart.sg |
C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=RapidSSL TLS RSA CA G1 | Sun, 03 Jan 2027 23:59:59 +0000 |
RapidSSL TLS RSA CA G1 |
C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root G2 | Tue, 02 Nov 2027 12:24:33 +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 receiptEd25519 Receipt
- Receipt ID
rcpt_91efe0efff1e98f2- Output Hash
1eb1b4625a0eaa435cec13b6a23d2a71c669a053f2c19cf9e69fe7557adb7d56- Signature
ed25519:21b603902768d6016ebccb0c2f4a90c788d511864a08bbe68fcaf6329fb7c1ffc408d5933d4cf65a10c11f69f0dd3c8385d7ce3388526c33928ffda0505e9d07- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast