rfet.es
Observed Jul 25, 2026, 08:47 UTC (6d 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
Email byMicrosoft 365
Secured byLet's Encrypt
1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat rfet.es actually stands on - every host below is a signed observation
rfet.es
A / AAAA
52.48.17.79
unattributedserves the site
NS
kipp.ns.cloudflare.comlaila.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
rfet-es.mail.protection.outlook.com
Microsoft 365receives its email
TLS
rfet.es
Let's Encryptissued its certificate
DNS Records
A 1
52.48.17.79
MX 1
10rfet-es.mail.protection.outlook.com
TXT 5
MS=ms29253602Sendinblue-code:1e1a7c763b28e8ee519e15f0086e1e08amazonses:Cv5HzeD75SS3HiHSEyC6t2YOGYfsPrmPIwkDq7jiSgg=v=spf1 include:spf.mailjet.com +mx +a +ip4:138.201.65.67 +ip4:78.129.229.30 +include:spf.sendinblue.com +include:amazonses.com +include:spf.protection.outlook.com +include:pgt.rfet.es ~allv=DMARC1; p=none; sp=none; rua=mailto:dmarc@mailinblue.com!10m; ruf=mailto:dmarc@mailinblue.com!10m; rf=afrf; pct=100; ri=86400
NS 2
kipp.ns.cloudflare.comlaila.ns.cloudflare.com
SOA 1
kipp.ns.cloudflare.com dns.cloudflare.com
SRV 1
cpanelemaildiscovery.cpanel.net:443 p0
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
rfet.es |
C=US, O=Let's Encrypt, CN=YR1 | Thu, 01 Oct 2026 20:37:43 +0000 |
YR1 |
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 (1)
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_56572af5c91a7c58- Output Hash
312c9093aeec056a437d4ce7ecdabe3f50bad9d6fff91ddd8f0fd9c63f3a9a24- Signature
ed25519:2515cace4ffbc0c81520179d514b658a616e98e0bd9a2da5b0b6ccea4e685db4a34b4456497d7daa216a40f62380acd92981f2d9ade9f0e37cc1823a3b8bca0a- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast