rfsu.com

Observed Jul 29, 2026, 05:37 UTC (13h 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.

Verify this receipt yourself + Watch this domain

Up right now

Email byMicrosoft 365

Secured byDigiCert

Also usesGoogle Search Console

1 subdomain · tranco

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

INFRASTRUCTURE MAPwhat rfsu.com actually stands on - every host below is a signed observation

rfsu.com

A / AAAA

213.88.149.101

unattributedserves the site

dns-b.buildit.netdns-c.buildit.eu

buildit.net + buildit.euanswers its DNS

rfsu-com.mail.protection.outlook.com

Microsoft 365receives its email

TLS

www.rfsu.com

DigiCert Incissued its certificate

DNS Records

A 1

213.88.149.101

MX 1

0rfsu-com.mail.protection.outlook.com

TXT 9

google-site-verification=OvCHTjZElv9188z8EsmsFe_pCQRk5L1aCaWfqY725uk
v=spf1 include:spf.protection.outlook.com include:spf.eu.exclaimer.net include:_spfa.buildit.net -all
apple-domain-verification=6QLV9HND1eVPPIFa
klaviyo-site-verification=NpEPe3
v=verifydomain MS=ms76477567
_78vzrr4bi1m10ubs8syn7ndpx2dr606
klaviyo-site-verification=McT2CF
anthropic-domain-verification-8qfvxz=pWNG3uwuQVW8hIV9LyBk8bVj4
v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email; ruf=mailto:dmarc@rfsu.com

NS 2

dns-b.buildit.net
dns-c.buildit.eu

SOA 1

dns-b.buildit.net hostmaster.buildit.net

TLS Certificates (3)

Common Name	Issuer	Expires
`www.rfsu.com`	C=US, O=DigiCert Inc, CN=GeoTrust EV RSA CA G2	Wed, 17 Feb 2027 23:59:59 +0000
`GeoTrust EV RSA CA G2`	C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root G2	Tue, 02 Jul 2030 12:42:57 +0000
`DigiCert Global Root G2`	C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root G2	Fri, 15 Jan 2038 12:00:00 +0000

Subdomains (2)

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 rfsu.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_17f98d7606eb8061
Output Hash: 4f293282ef6e205e9debd858d0f93014631b9ab987896417a0a3d201eee5e361
Signature: ed25519:537ec3ac4f8a1f79d41abd3b731ec941309eb0e891feaa2457a7282f6a3889e0bc25c726b97493b3dfcdf07c6d1bf61e8c27763bf0b050ae981cc009feefa902
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/rfsu.com