cossa.ru

Observed Jul 27, 2026, 09:53 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.

Verify this receipt yourself + Watch this domain

Up right now

Email byGoogle Workspace

Secured byLet's Encrypt

1 subdomain · tranco_100k

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat cossa.ru actually stands on - every host below is a signed observation

cossa.ru

A / AAAA

5.188.130.50

unattributedserves the site

d.ns.selectel.ruc.ns.selectel.rub.ns.selectel.rua.ns.selectel.ru

selectel.ruanswers its DNS

ASPMX4.GOOGLEMAIL.COMASPMX2.GOOGLEMAIL.COMASPMX5.GOOGLEMAIL.COMALT1.ASPMX.L.GOOGLE.COM+3 more

Google Workspacereceives its email

TLS

cossa.ru

Let's Encryptissued its certificate

DNS Records

A 1

5.188.130.50

MX 7

30ASPMX4.GOOGLEMAIL.COM
30ASPMX2.GOOGLEMAIL.COM
30ASPMX5.GOOGLEMAIL.COM
20ALT1.ASPMX.L.GOOGLE.COM
20ALT2.ASPMX.L.GOOGLE.COM
10ASPMX.L.GOOGLE.COM
30ASPMX3.GOOGLEMAIL.COM

TXT 3

v=spf1 a mx include:_spf.google.com include:mxsspf.sendpulse.com include:_spf.dashasender.ru include:spf.mail.selcloud.ru ~all
33ddd83e-9671-4ca9-a4f6-eb89f497cc03
v=DMARC1; p=quarantine

NS 4

d.ns.selectel.ru
c.ns.selectel.ru
b.ns.selectel.ru
a.ns.selectel.ru

SOA 1

a.ns.selectel.ru support.selectel.ru

TLS Certificates (4)

Common Name	Issuer	Expires
`cossa.ru`	C=US, O=Let's Encrypt, CN=YE2	Mon, 14 Sep 2026 05:13:02 +0000
`YE2`	C=US, O=ISRG, CN=Root YE	Sat, 02 Sep 2028 23:59:59 +0000
`Root YE`	C=US, O=Internet Security Research Group, CN=ISRG Root X2	Thu, 02 Sep 2032 23:59:59 +0000
`ISRG Root X2`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (1)

www.cossa.ru

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 receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for cossa.ru. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/cossa.ru">
  <img src="https://domaindrift.io/badge/cossa.ru.svg"
       width="300" height="64" alt="DomainDrift signed observations for cossa.ru">
</a>

Ed25519 Receipt

Receipt ID: rcpt_7585d27585e89760
Output Hash: 3f3cb7b032d99fba11f9a4c7c7f57e22163f06aec217282d27bc717b4b33d100
Signature: ed25519:dd111314327be61d0d9d18f25f9484d0eee6484f6af87c9cff890385c98232a3f7b4e79f0083d732685a1824b3bb22870f61e4bba061e9587ef6042956102c0b
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/cossa.ru