material.co.jp
Observed Aug 16, 2026, 14:22 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
Email byGoogle (SPF sender)
Google (SPF sender)Secured byLet's Encrypt
Let's Encrypt1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat material.co.jp actually stands on - every host below is a signed observation
material.co.jp
A / AAAA
183.90.231.68
unattributedserves the site
NS
ns1.xbiz.ne.jpns2.xbiz.ne.jpns3.xbiz.ne.jp
ne.jpanswers its DNS
MX
material.co.jp
Google (SPF sender)receives its email
TLS
www.material.co.jp
Let's Encryptissued its certificate
DNS Records
A 1
183.90.231.68
MX 1
0material.co.jp
TXT 1
v=spf1 +a:sv267.xbiz.ne.jp +a:material.co.jp +mx include:spf.sender.xserver.jp include:_spf.google.com ~all
NS 3
ns1.xbiz.ne.jpns2.xbiz.ne.jpns3.xbiz.ne.jp
SOA 1
ns1.xbiz.ne.jp root.xbiz.ne.jp
DMARC_RECORDS 1
v=DMARC1; p=quarantine; rua=mailto:owada@material.co.jp;
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
www.material.co.jp |
C=US, O=Let's Encrypt, CN=YR1 | Thu, 22 Oct 2026 03:02:10 +0000 |
YR1 |
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_bd6f83982318d1bb- Output Hash
3d8c84f64cd9bf7cfbac27578e62660ed9c74403150c6fc867dc74aad40cbd3e- Signature
ed25519:c89b3660748b27a8bab732670c989a1a17e29a7307788055a099ae68a19812aac1791dd295274890a6aaecb1ee8e0f43889b99c4a532069110d4997e1ecea50c- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast