upfree.vn
Observed Aug 2, 2026, 15:30 UTC (19h 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 byLet's Encrypt
1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat upfree.vn actually stands on - every host below is a signed observation
upfree.vn
A / AAAA
125.212.221.89
unattributedserves the site
NS
ns4.zonedns.vnns2.zonedns.vnns1.zonedns.vnns3.zonedns.vn
zonedns.vnanswers its DNS
TLS
upfree.vn
Let's Encryptissued its certificate
DNS Records
A 1
125.212.221.89
NS 4
ns4.zonedns.vnns2.zonedns.vnns1.zonedns.vnns3.zonedns.vn
SOA 1
ns1.zonedns.vn root.upfree.vn
TLS Certificates (5)
| Common Name | Issuer | Expires |
|---|---|---|
upfree.vn |
C=US, O=Let's Encrypt, CN=YR2 | Tue, 06 Oct 2026 07:07:58 +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 |
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 (1)
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_a52ffabd64438415- Output Hash
7acb4d3fda619d4104c158f625ed39ecb82ec48b42cc9b55ad9b437c5d4d72f2- Signature
ed25519:996491ea5490ba33a74c4a9a75d8d1a397ffd9cd272f4248a1307d24cedfdec6a1d5d8e69201e7e4bf2df73d4d8eb329a0dc9a09ee6a1af71a38b9e81a95b60f- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast