yubisashi.com
Observed Jul 26, 2026, 09:52 UTC (7d 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 Workspace
Secured byLet's Encrypt
Also usesGoogle Search Console
1 subdomain · majestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat yubisashi.com actually stands on - every host below is a signed observation
yubisashi.com
A / AAAA
183.90.250.21
unattributedserves the site
NS
01.dnsv.jp02.dnsv.jp03.dnsv.jp04.dnsv.jp
dnsv.jpanswers its DNS
MX
alt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.com+1 more
Google Workspacereceives its email
TLS
www.yubisashi.com
Let's Encryptissued its certificate
DNS Records
A 1
183.90.250.21
MX 5
20alt1.aspmx.l.google.com20alt2.aspmx.l.google.com10aspmx.l.google.com30aspmx2.googlemail.com30aspmx3.googlemail.com
TXT 3
google-site-verification=Can5ueYzwrn3C0I-fPHOQmDb7NOcvY0y1DeN5q05pp8google-site-verification=Z6_x9T8jb4puWDpEAj_9T6qeYjrPKR3Vs7WY-8c-QdEv=spf1 +ip4:52.68.78.29 +ip4:153.126.170.156 -all
NS 4
01.dnsv.jp02.dnsv.jp03.dnsv.jp04.dnsv.jp
SOA 1
01.dnsv.jp hostmaster.dnsv.jp
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
www.yubisashi.com |
C=US, O=Let's Encrypt, CN=YR2 | Sat, 10 Oct 2026 06:08:56 +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_0c58215fcfad6aac- Output Hash
a2842c1f82c11181b45ac825805c9846600b2f36a1906ba4418657f073ab7dbd- Signature
ed25519:1a5db24052db2e02ede08d9fb27c85ea4628727df6c6e0f7e6696030f32396abbb1ec459720625176d245e1937c8260e7828d432869b81fd2286b15bd8f8710b- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast