us.edu.pl

Observed Jul 18, 2026, 13:44 UTC (12h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onSilesian University of Technology

Email byGoogle (SPF sender)

Secured byHellenic Academic and Research Institutions CA

Registered withnazwa.pl sp. z o.o.

tranco_40k

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

INFRASTRUCTURE MAPwhat us.edu.pl actually stands on - every host below is a signed observation

us.edu.pl

A / AAAA

155.158.211.71

Silesian University of Technologyserves the site

cocos.fuw.edu.pldns2.us.edu.pldns1.us.edu.pl

edu.planswers its DNS

d69205a.ess.barracudanetworks.comd69205b.ess.barracudanetworks.com

Google (SPF sender)receives its email

TLS

*.us.edu.pl

Hellenic Academic and Research Institutions CAissued its certificate

DNS Records

A 1

155.158.211.71

MX 2

10d69205a.ess.barracudanetworks.com
20d69205b.ess.barracudanetworks.com

TXT 2

v=spf1 ip4:155.158.102.210 ip4:155.158.102.75 ip4:155.158.102.69 ip4:155.158.102.209 ip4:155.158.102.247 ip4:155.158.102.69 ip4:155.158.104.167 ip4:155.158.102.57 ip4:208.91.114.151 include:_spf.google.com a:mailbus.bg.us.edu.pl a:theta2.us.edu.pl -all
v=DMARC1;p=quarantine;sp=quarantine;pct=100;rua=mailto:dmarc@us.edu.pl;ri=86400;aspf=r;adkim=r;fo=1

NS 3

cocos.fuw.edu.pl
dns2.us.edu.pl
dns1.us.edu.pl

SOA 1

dns1.us.edu.pl dns.us.edu.pl

TLS Certificates (4)

Common Name	Issuer	Expires
`*.us.edu.pl`	C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS RSA 1	Fri, 13 Nov 2026 10:32:37 +0000
`GEANT TLS RSA 1`	C=GR, O=Hellenic Academic and Research Institutions CA, CN=HARICA TLS RSA Root CA 2021	Sat, 31 Dec 2039 11:14:59 +0000
`HARICA TLS RSA Root CA 2021`	C=GR, O=Hellenic Academic and Research Institutions CA, CN=HARICA TLS RSA Root CA 2021	Mon, 13 Feb 2045 10:55:37 +0000
`Hellenic Academic and Research Institutions RootCA 2015`	C=GR, L=Athens, O=Hellenic Academic and Research Institutions Cert. Authority, CN=Hellenic Academic and Research Institutions RootCA 2015	Sat, 30 Jun 2040 10:11:21 +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 us.edu.pl. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: 9303b1df-6881-4a7a-b68f-6604b901f851
Output Hash: 54043a958395ee79b44dab2796e115578417d379e83163cb6b6008c8e73bf7ef
Signature: ed25519:fe26fd362f1fc46dd326725ed57964e4715374d754dca6a3b06ff9e6c995adf492baaf47fadc9bc44e72b8fb2624cccf14202acbd8b0f697e7dd48f4b3516d0c
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/us.edu.pl