k-semi.jp
Observed Aug 16, 2026, 11:24 UTC (11h 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
Let's Encrypt1 subdomain · majestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat k-semi.jp actually stands on - every host below is a signed observation
k-semi.jp
A / AAAA
85.131.209.70
unattributedserves the site
NS
ns2.xserver.jpns4.xserver.jpns5.xserver.jpns1.xserver.jp+1 more
xserver.jpanswers its DNS
TLS
www.k-semi.jp
Let's Encryptissued its certificate
DNS Records
A 1
85.131.209.70
TXT 1
v=spf1 +a:sv16529.xserver.jp +a:k-semi.jp +mx include:spf.sender.xserver.jp ~all
NS 5
ns2.xserver.jpns4.xserver.jpns5.xserver.jpns1.xserver.jpns3.xserver.jp
SOA 1
ns1.xserver.jp root.xserver.jp
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
www.k-semi.jp |
C=US, O=Let's Encrypt, CN=YR2 | Sun, 11 Oct 2026 23:09:58 +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 |
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; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_bcfc9b6e5217eb20- Output Hash
d7a6f9864ef92b6a15c96873d03d5869f1c8b195fcf23e808429237b91ececcc- Signature
ed25519:64f15607779b353e3c630fe8737a27ad076e20caec522c825fb4c2129b5ad469bc9d518b350f1b6e4625eeae34adc49e03e48fe246b85c4e35f1472b3dd3a906- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast