dymon.co.jp
Observed Jul 27, 2026, 09:15 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.
Up right now
Email byGoogle Workspace
Secured byLet's Encrypt
Also usesGoogle Search ConsoleHubSpot
1 subdomain · domcop
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat dymon.co.jp actually stands on - every host below is a signed observation
dymon.co.jp
A / AAAA
103.3.1.19
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.comalt3.aspmx.l.google.comalt4.aspmx.l.google.com+1 more
Google Workspacereceives its email
TLS
www.dymon.co.jp
Let's Encryptissued its certificate
DNS Records
A 1
103.3.1.19
MX 5
5alt1.aspmx.l.google.com5alt2.aspmx.l.google.com10alt3.aspmx.l.google.com10alt4.aspmx.l.google.com1aspmx.l.google.com
TXT 3
google-site-verification=A8AukZA4_MggADvMW-nvxOnKkp9TTWr24ktUncobt0Av=spf1 include:_spf.google.com include:21634080.spf10.hubspotemail.net ~allv=DMARC1; p=none;
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.dymon.co.jp |
C=US, O=Let's Encrypt, CN=YR2 | Fri, 11 Sep 2026 09:18:00 +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_0782682a42d66da4- Output Hash
d6eace4524d31a97fc028f64a025c3b742cd4b4a09cf4d49131616a8e5daf304- Signature
ed25519:e2eaadbd7d5d60fb17ab80dea6bb74cff31c681f1d056eb0f70e3a5fec977e0a9c7df5d9b2daf727d7798327a2ddc8b8dffa66ff7786006531554be0ec98f005- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast