algebra.hr

Observed Jul 24, 2026, 12:29 UTC (2h 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

Runs onCloudflare

Email byMicrosoft 365

Secured byHellenic Academic and Research Institutions CA

Also usesGoogle Search ConsoleHubSpot

6 subdomains · tranco

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

INFRASTRUCTURE MAPwhat algebra.hr actually stands on - every host below is a signed observation

algebra.hr

A / AAAA

178.218.162.49

Cloudflareserves the site

everton.ns.cloudflare.comwally.ns.cloudflare.com

cloudflare.comanswers its DNS

algebra-hr.mail.protection.outlook.com

Microsoft 365receives its email

TLS

*.algebra.hr

Hellenic Academic and Research Institutions CAissued its certificate

DNS Records

A 1

178.218.162.49

MX 1

10algebra-hr.mail.protection.outlook.com

TXT 5

HARICA-OkQIE97qwhUZwwCQCZm
google-site-verification=HX5XmPLwGj9YizbWKaEH8MZ00FaKyPZdu6Yze_EWeKY
google-site-verification=t01QYCUnGn3WgctGF6TXXPDVPzt_-NXb7SK_aWsjeik
v=spf1 a:primus.racunarstvo.hr a:mx1.racunarstvo.hr ip4:91.99.97.238 ip4:49.13.66.102 include:spf.protection.outlook.com include:spf.mandrillapp.com include:8317478.spf04.hubspotemail.net ~all
v=DMARC1; p=quarantine; sp=none; adkim=s; aspf=s; rua=mailto:e70b90831019467a8c915157de0a7c76@dmarc-reports.cloudflare.net,mailto:spam.monitoring@algebra.hr; ruf=mailto:spam.monitoring@algebra.hr; pct=100; fo=0:1;

NS 2

everton.ns.cloudflare.com
wally.ns.cloudflare.com

SOA 1

everton.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (3)

Common Name	Issuer	Expires
`*.algebra.hr`	C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS RSA 1	Fri, 23 Oct 2026 10:04:02 +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 (6)

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.

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Ed25519 Receipt

Receipt ID: rcpt_a5a42b009efad5a9
Output Hash: 2e8982650989baeb5fc76ba988d5dd8a82e2db3aed45d84c6f64e44de030a07f
Signature: ed25519:eced8604c5850b4081e4ec74c3c3f4dd0b3b17ded2c8adac16eb006cd777c834adfb181d1d50e465c1eea2df00621f255b0a9d31e73e9e72da7cab0e6574e706
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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