alsa-project.org
Observed Jul 24, 2026, 02:14 UTC (14h 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 byLet's Encrypt
Also usesGoogle Search Console
6 subdomains · tranco_100k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat alsa-project.org actually stands on - every host below is a signed observation
alsa-project.org
A / AAAA
45.14.194.44
unattributedserves the site
NS
ns.web4u.czns2.web4u.cz
web4u.czanswers its DNS
MX
alsa1.perex.czalsa0.perex.cz
perex.czreceives its email
TLS
alsa-project.org
Let's Encryptissued its certificate
DNS Records
A 1
45.14.194.44
MX 2
10alsa1.perex.cz50alsa0.perex.cz
TXT 3
v=spf1 mx mx:perex.cz -allgoogle-site-verification=snu7nBLyu5c2to8NyHpAZkKP8sJDMXdFqetsn7Cg0zwv=DMARC1; p=none; rua=mailto:dmarc-rua@alsa-project.org
NS 2
ns.web4u.czns2.web4u.cz
SOA 1
ns.web4u.cz admin.web4u.cz
CAA 1
issue "letsencrypt.org"
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
alsa-project.org |
C=US, O=Let's Encrypt, CN=YR2 | Sun, 30 Aug 2026 02:58:24 +0000 |
YR2 |
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 (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.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_c9c5d73aeff19273- Output Hash
083bdda389f7845c1c8bb0b5ce704e8a8853fce832c233bf54cd1daa41dfb094- Signature
ed25519:b82e31ac053d7094f4d39d71ee9b486dd099783073cf97fc45ee3352d1d35221c7156a36d6c4607a046fca403c3625342f8af76b7385ebf77252738ab00da30e- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast