alumdevelop.ru

Observed Jul 28, 2026, 07:09 UTC (4h 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

Secured byLet's Encrypt

1 subdomain · majestic

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

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

alumdevelop.ru

A / AAAA

77.223.103.25

unattributedserves the site

c.ns.selectel.rub.ns.selectel.rua.ns.selectel.rud.ns.selectel.ru

selectel.ruanswers its DNS

mx.yandex.net

yandex.netreceives its email

TLS

alumdevelop.ru

Let's Encryptissued its certificate

DNS Records

A 1

77.223.103.25

MX 1

10mx.yandex.net

TXT 1

v=spf1 redirect=_spf.yandex.net

NS 4

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

SOA 1

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

TLS Certificates (3)

Common Name	Issuer	Expires
`alumdevelop.ru`	C=US, O=Let's Encrypt, CN=YR1	Mon, 05 Oct 2026 18:51:54 +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)

www.alumdevelop.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 alumdevelop.ru. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_a5a631ee2790a713
Output Hash: d77397b54e759c203847a7dd979b06d42bc5a199313c7ec7a62d3ae58dece272
Signature: ed25519:ca8895beacacd35a5a948114a5e2485b725481e8b17899b4452d10237d08eabf48718711748b3c1fb050a82be1e22aca717ef97e4801f5505827ed912461ca03
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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