bfu.ch

Observed Aug 10, 2026, 21:09 UTC (7d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of bfu.ch was taken 7d ago

bfu.ch is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting bfu.ch under watch moves it to the fast lane, where DomainDrift re-checks it about every 5 minutes and signs each reading, so a change becomes a dated event within minutes instead of waiting for the sweep to come round.

Watch bfu.ch Watching a domain needs a DRM3 account. The reading above stays free and public either way.

Verify this receipt yourself + Watch this domain

Up right now

Runs onMicrosoft Corporation

Email byMicrosoft 365

Secured byLet's Encrypt

Also usesFacebook/MetaGoogle Search Console

18 subdomains · tranco

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

DRIFT

Steady. No change on record for bfu.ch in the last day; this reading matches the one before it. The steady record is signed like every other reading. Watch it to catch the next move the moment it lands.

INFRASTRUCTURE MAPwhat bfu.ch actually stands on - every host below is a signed observation

bfu.ch

A / AAAA

4.226.42.64

Microsoft Corporationserves the site

ns1-03.azure-dns.comns2-03.azure-dns.netns3-03.azure-dns.orgns4-03.azure-dns.info

azure-dns.com + azure-dns.net + moreanswers its DNS

bfu-ch.mail.protection.outlook.com

Microsoft 365receives its email

TLS

bfu.ch

Let's Encryptissued its certificate

DNS Records

A 1

4.226.42.64

MX 1

5bfu-ch.mail.protection.outlook.com

TXT 6

v=spf1 a mx ip4:82.220.25.36 ip4:82.220.25.40 ip4:31.11.29.203 ip4:31.11.29.204 a:mail.bfu.ch include:spf.protection.outlook.com include:spf.umantis.com include:_spf.plan-net.swiss -all
facebook-domain-verification=aycgxgbdlimihi81yb3pw0yzcnyf3r
5tuayKq630wiGRFYNQLIpZxm9egVKGwzqbgSUqz5nXp/qKDfs94vfP7mMlyKwr/3r6LB5QJvyt+wpKplEMVU/g==
iNHupo4nlzBt3+VDSDZOEHmXpCNReAvN1fs4rQcIt+Q=
mx-965c1d8973a941fc
google-site-verification=QHozLbX0XYv_SGpOP1S88BE0gM-5RB5Vt8-8slVZqNc

NS 4

ns1-03.azure-dns.com
ns2-03.azure-dns.net
ns3-03.azure-dns.org
ns4-03.azure-dns.info

SOA 1

ns1-03.azure-dns.com administrator.bfu.ch

DMARC_RECORDS 1

v=DMARC1; p=reject

TLS Certificates (3)

Common Name	Issuer	Expires
`bfu.ch`	C=US, O=Let's Encrypt, CN=YR1	Fri, 06 Nov 2026 08:09:16 +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 (18)

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 receipt

Ed25519 Receipt

Receipt ID: rcpt_88d66470b1728152
Output Hash: 594d6ded9d6db861b937a4c8f347ba06697539170894bdccad3e137f2c54079b
Signature: ed25519:0083f12ed4341cc47ffb1239fb8a1407a40fd4838c4c2c1261afa7c99346bc9547f89b00c6f1e321a4369670bce2e5e8a3ab457e9fb429defefea5e29726a600
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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