ysmu.ru
Observed Aug 3, 2026, 03:34 UTC (21h 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 byMicrosoft 365
Secured byLet's Encrypt
1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat ysmu.ru actually stands on - every host below is a signed observation
ysmu.ru
A / AAAA
31.31.198.191
unattributedserves the site
NS
ns3.edu.yar.runs2.ysmu.runs1.ysmu.ru
yar.ru + ysmu.ruanswers its DNS
MX
ysmu-ru.mail.protection.outlook.com
Microsoft 365receives its email
TLS
xn--c1asv9b.xn--p1ai
Let's Encryptissued its certificate
DNS Records
A 1
31.31.198.191
MX 1
10ysmu-ru.mail.protection.outlook.com
TXT 1
v=spf1 include:spf.protection.outlook.com -all
NS 3
ns3.edu.yar.runs2.ysmu.runs1.ysmu.ru
SOA 1
ns1.ysmu.ru root.ysmu.ru
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
xn--c1asv9b.xn--p1ai |
C=US, O=Let's Encrypt, CN=YR2 | Mon, 14 Sep 2026 23:50:11 +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_90890e9eb08b450f- Output Hash
331074a5146a11756ccd6ca1ab590de5b53b0f3ea72bde165863d4f51f7b283e- Signature
ed25519:2f290c449792fd19a60425f218b3a43dc4e14ab0c490c64298fd46cd40af9c5da954aa51daf513db980f134c2369523d2abcd92517e09fcff483b74b90b3d207- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast