usos.edu.pl
Observed Aug 9, 2026, 19:38 UTC (19h 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
Secured byHellenic Academic and Research Institutions CA
Also usesGoogle Search Console
domcop
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat usos.edu.pl actually stands on - every host below is a signed observation
usos.edu.pl
A / AAAA
193.0.109.80
unattributedserves the site
NS
ns4.uw.edu.plns3.uw.edu.plns1.core.icm.edu.plns2.mimuw.edu.pl+1 more
edu.planswers its DNS
MX
mail.mimuw.edu.pl
edu.plreceives its email
TLS
*.usos.edu.pl
Hellenic Academic and Research Institutions CAissued its certificate
DNS Records
A 1
193.0.109.80
MX 1
0mail.mimuw.edu.pl
TXT 3
USOSgoogle-site-verification=5hmvPT4n5e4oHxKqsOwv__tj8aRt_svI6tBaRILN0-Mv=spf1 ip6:2001:6a0:5001::/48 ip4:193.0.96.0/24 ip4:193.0.109.0/24 mx ~all
NS 5
ns4.uw.edu.plns3.uw.edu.plns1.core.icm.edu.plns2.mimuw.edu.plns.mimuw.edu.pl
SOA 1
ns.mimuw.edu.pl hostmaster.mimuw.edu.pl
DMARC_RECORDS 1
v=DMARC1; p=none; rua=mailto:hostmaster@usos.edu.pl;
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
*.usos.edu.pl |
C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS RSA 1 | Fri, 05 Feb 2027 15:29:34 +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, L=Athens, O=Hellenic Academic and Research Institutions Cert. Authority, CN=Hellenic Academic and Research Institutions RootCA 2015 | Fri, 31 Aug 2029 07:41:54 +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; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_8747bb755abca27a- Output Hash
ff708ea2bcae6a0e915125a00bb6a8203e209e8f5ce876d05f1e1cf1abe4a254- Signature
ed25519:02dc7476c8561e9364862dea5a8ab3b68f8e792fa41f10385d1278653a695a0c4c35bafd80e6b212cca1d7e5a40ed28f31cd22fca76674a3019f2e211fd16509- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast