upfc.jp
Observed Jul 27, 2026, 22:45 UTC (5d 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.
Guarded by a firewall
Secured byLet's Encrypt
Also usesGoogle Search Console
1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat upfc.jp actually stands on - every host below is a signed observation
upfc.jp
A / AAAA
153.125.168.212
unattributedserves the site
NS
ns1.gslb8.sakura.ne.jpns2.gslb8.sakura.ne.jp
ne.jpanswers its DNS
MX
mail.upfc.jp
upfc.jpreceives its email
TLS
upfc.jp
Let's Encryptissued its certificate
DNS Records
A 1
153.125.168.212
MX 1
10mail.upfc.jp
TXT 3
google-site-verification=_wm3o2YHTcrN2kh_MQUjfnxYdtyx5KmThlBYeR21BYUv=spf1 +ip4:133.242.248.132/28 ~allv=DMARC1; p=none; rua=mailto:dmarc@upfc.jp; ruf=mailto:dmarc@upfc.jp;
NS 2
ns1.gslb8.sakura.ne.jpns2.gslb8.sakura.ne.jp
SOA 1
ns1.gslb8.sakura.ne.jp noc.sakura.ad.jp
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
upfc.jp |
C=US, O=Let's Encrypt, CN=YR2 | Sat, 05 Sep 2026 04:29:15 +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_e3ee949a3da91e19- Output Hash
336b9cbfc1843f261de846a4dc3b028882d75369fe346ea23e67fae5d52b69a4- Signature
ed25519:5e362958ba404b49094f23f80c2069c3cce72d58a2b0e0611e05a0e9f35264c517a0b50da67697f63e176544be092e1e5ceae75c568fd4c54fd36bf853d7c003- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast