jtt.co.jp
Observed Aug 16, 2026, 19:15 UTC (5h 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 Encryptdomcop
Every line above is a signed observation. Check the math at the bottom of the page.
DRIFT
Steady. No change on record for jtt.co.jp in the last day; this reading matches the one before it. The steady record is signed like every other reading. Watch it to catch the next move the moment it lands.
INFRASTRUCTURE MAPwhat jtt.co.jp actually stands on - every host below is a signed observation
jtt.co.jp
A / AAAA
112.78.125.22
unattributedserves the site
NS
ns1.dns.ne.jpns2.dns.ne.jp
ne.jpanswers its DNS
MX
jtt.co.jp
jtt.co.jpreceives its email
TLS
jtt.co.jp
Let's Encryptissued its certificate
DNS Records
A 1
112.78.125.22
MX 1
10jtt.co.jp
TXT 1
v=spf1 a:www522b.sakura.ne.jp mx include:mail.secure-cms.net ~all
NS 2
ns1.dns.ne.jpns2.dns.ne.jp
SOA 1
master.dns.ne.jp tech.sakura.ad.jp
DMARC_RECORDS 1
v=DMARC1; p=quarantine; aspf=r; adkim=r; rua=mailto:h.shimode@jtt.co.jp
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
jtt.co.jp |
C=US, O=Let's Encrypt, CN=YR2 | Wed, 14 Oct 2026 21:31:25 +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 (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; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_b79e8c6671502444- Output Hash
e68f1b84ea79456e1a18e3eb686cfa5cad825b4b0f73519ab249f4a2e0876004- Signature
ed25519:f5f334003d4264054705861d57324c9d14b16c8df4b1eb3d6ba2df0604cf129a4f54b17905e24508e31338e8c9f707c6e025ab9800a678e4adef1197869b0006- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast