bifu.co

Observed Aug 11, 2026, 03:37 UTC (5d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of bifu.co was taken 5d ago

bifu.co is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting bifu.co 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 bifu.co 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 onAmazon

Email byMandrill (Mailchimp)

Secured byAmazon

Also usesLarkGoogle Search Console

DNSSEC on · IPv6 · domcop

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

INFRASTRUCTURE MAPwhat bifu.co actually stands on - every host below is a signed observation

bifu.co

A / AAAA

3.171.100.93.171.100.623.171.100.813.171.100.91+8 more

Amazonserves the site

adi.ns.cloudflare.comstan.ns.cloudflare.com

cloudflare.comanswers its DNS

mx1.larksuite.commx2.larksuite.commx3.larksuite.com

Mandrill (Mailchimp)receives its email

TLS

bifu.co

Amazonissued its certificate

DNS Records

A 4

3.171.100.9
3.171.100.62
3.171.100.81
3.171.100.91

AAAA 8

2600:9000:2512:400:19:dd9c:de40:93a1
2600:9000:2512:4600:19:dd9c:de40:93a1
2600:9000:2512:8600:19:dd9c:de40:93a1
2600:9000:2512:9200:19:dd9c:de40:93a1
2600:9000:2512:b400:19:dd9c:de40:93a1
2600:9000:2512:be00:19:dd9c:de40:93a1
2600:9000:2512:c400:19:dd9c:de40:93a1
2600:9000:2512:f000:19:dd9c:de40:93a1

MX 3

1mx1.larksuite.com
5mx2.larksuite.com
10mx3.larksuite.com

TXT 5

mandrill_verify.tcbuZo28NHS6-eNNVMVg5g
verification-code-site-App_lark=FJgnRGqOsRYUIjZ2Xu6l
google-site-verification=OB_PNoC1cup_LSkura-eMreEVxScDt2tRAbbsOW2a0Y
google-site-verification=pQQy1rHFv_zY5JnMCVf-VPpVqFzH-_068k3bJX-OzWU
v=spf1 include:spf.onlarksuite.com include:spf.mandrillapp.com include:mail.zendesk.com -all

NS 2

adi.ns.cloudflare.com
stan.ns.cloudflare.com

SOA 1

adi.ns.cloudflare.com dns.cloudflare.com

DMARC_RECORDS 1

v=DMARC1; p=quarantine; pct=100; ruf=mailto:infra@bifu.co; rua=mailto:infra@bifu.co

TLS Certificates (3)

Common Name	Issuer	Expires
`bifu.co`	C=US, O=Amazon, CN=Amazon RSA 2048 M04	Fri, 19 Feb 2027 23:59:59 +0000
`Amazon RSA 2048 M04`	C=US, O=Amazon, CN=Amazon Root CA 1	Fri, 23 Aug 2030 22:26:35 +0000
`Amazon Root CA 1`	C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Services Root Certificate Authority - G2	Thu, 31 Dec 2037 01:00:00 +0000

Subdomains (0)

None observed.

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_e45321b5c50a301c
Output Hash: 890cff68bff0205615b42b70a1ea1a6b9343d3a60c27995c74bfc7bd84ba4ee6
Signature: ed25519:6253d95f830389211b07f6dad49c2dc2ead38199b6a2d23bf83ad35935605f62c52660ac5cb65c1b58d3f8d1532c864ee55940a8e8c89255af68a33c7498070e
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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