bfb.de
Observed Aug 16, 2026, 12:02 UTC (6h 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
Runs onCloudflare
CloudflareAlso usesMicrosoft 365
Microsoft 3654 subdomains · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat bfb.de actually stands on - every host below is a signed observation
bfb.de
A / AAAA
85.13.138.137
Cloudflareserves the site
NS
ns2.nodesecure.dens1.nodesecure.com
nodesecure.de + nodesecure.comanswers its DNS
MX
mx03.hornetsecurity.commail.bfb.demx02.hornetsecurity.commx01.hornetsecurity.com+1 more
hornetsecurity.com + bfb.dereceives its email
HTTPS probe
redirect
Redirecting (3xx) 301 → https://www.sellwerk-berlin.de/
HTTP status301
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time999 ms
DNS resolutionNOERROR
Redirect chain
https://www.sellwerk-berlin.de/Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".
DNS Records
A 1
85.13.138.137
MX 5
30mx03.hornetsecurity.com100mail.bfb.de20mx02.hornetsecurity.com10mx01.hornetsecurity.com40mx04.hornetsecurity.com
TXT 3
MS=ms55606410MS=ms46511490v=spf1 ip4:91.102.14.10/27 ip4:185.98.184.0/24 ip4:194.173.174.10/24 ip4:95.130.22.112/29 ip4:95.130.22.144/29 ip4:62.157.215.107 a:mail.bfb.de include:spfext.it2media.de include:spf.protection.outlook.com include:spf.hornetsecurity.com include:spf-de.emailsignatures365.com -all
NS 2
ns2.nodesecure.dens1.nodesecure.com
SOA 1
ns1.nodesecure.com domain.bfb.de
TLS Certificates (0)
None.
Subdomains (4)
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 receiptEd25519 Receipt
- Receipt ID
rcpt_bd7b80c79bfe861c- Output Hash
923294e46c0ac552986cc19e27b449137afc655b8e64a20f9647f3cf8312e668- Signature
ed25519:a73705e10c5d93a9398b28511dad2b3475b99a07f8c54a2b8f81f4d716acdcba46435ccad2fa26a310d3d9f1ebc7dc9fd47a42d9789f005b42277fc24bb82e02- Public Key
ed25519:7aad40f2d6399c207fe2fc15aade04a78324787a355d36725cc90687f9e10cff- Parent
(genesis)- Plane
- fast