usability-academy.com

Observed Jul 26, 2026, 08:55 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.

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Up right now

Secured byLet's Encrypt

majestic

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

INFRASTRUCTURE MAPwhat usability-academy.com actually stands on - every host below is a signed observation

usability-academy.com

A / AAAA

85.13.135.185

unattributedserves the site

ns6.kasserver.comns5.kasserver.com

kasserver.comanswers its DNS

w008948e.kasserver.com

kasserver.comreceives its email

TLS

usability-academy.com

Let's Encryptissued its certificate

DNS Records

A 1

85.13.135.185

MX 1

10w008948e.kasserver.com

TXT 1

v=spf1 a mx include:spf.kasserver.com ~all

NS 2

ns6.kasserver.com
ns5.kasserver.com

SOA 1

ns5.kasserver.com hostmaster.kasserver.com

TLS Certificates (4)

Common Name	Issuer	Expires
`usability-academy.com`	C=US, O=Let's Encrypt, CN=YE1	Mon, 07 Sep 2026 10:20:01 +0000
`YE1`	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 (0)

None observed.

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 usability-academy.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_23e314f16c4c0b88
Output Hash: 09b59a804d48b8eeaba8d11863478c1cc80efc0415953047126119af5a49d122
Signature: ed25519:87a68942c92ecd10a06979a24a5a7bfc31cc461b1d98bac52bd286649dd1ae3ee77e170e8bd204c8f3a3f06cdd38e51c910a7fffcce97ee8e2defd267a78c30a
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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Permalink: https://domaindrift.io/t/usability-academy.com