bonding.de
Observed Aug 12, 2026, 05:09 UTC (16h 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 onRWTH Aachen University
Email byHubSpot
HubSpotSecured byLet's Encrypt
Let's EncryptAlso usesMicrosoft 365
Microsoft 365majestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat bonding.de actually stands on - every host below is a signed observation
bonding.de
A / AAAA
137.226.35.3
RWTH Aachen Universityserves the site
NS
nsb5.schlundtech.dens.bonding.de
schlundtech.de + bonding.deanswers its DNS
MX
mx5.rz.rwth-aachen.de
HubSpotreceives its email
TLS
*.bonding.de
Let's Encryptissued its certificate
DNS Records
A 1
137.226.35.3
MX 1
10mx5.rz.rwth-aachen.de
TXT 3
oneuptime-verification-bvktUPpTaHHBmIWUjCgdv=spf1 include:spf.protection.outlook.com include:_spf.itc.rwth-aachen.de ip4:134.169.12.140 ip4:134.169.192.135 ip4:134.130.7.8 ip4:134.130.0.0/16 ip4:134.169.0.0/16 a:groupware.tu-bs.de a:mailfront1.rz.tu-bs.de a:mailfront2.rz.tu-bs.de a:mailfront3.rz.tu-bs.de a:www-bonding.rz.rwth-aachen.de a:wbonding.ext.rz.tu-bs.de a:mailgw1.uni-kl.de a:mailgw2.uni-kl.de a:mailgw3.uni-kl.de a:mailgw4.uni-kl.de include:144207819.spf01.hubspotemail.net include:spf.postal.bonding.de -allMS=ms18585867
NS 2
nsb5.schlundtech.dens.bonding.de
SOA 1
ns.bonding.de dnsmaster.bonding.de
SRV 2
beckie.bonding.de:993 p5smtp.bonding.de:465 p5
DMARC_RECORDS 1
v=DMARC1; p=none
TLS Certificates (5)
| Common Name | Issuer | Expires |
|---|---|---|
*.bonding.de |
C=US, O=Let's Encrypt, CN=YE2 | Sun, 08 Nov 2026 09:00:00 +0000 |
*.bonding.de |
C=US, O=Let's Encrypt, CN=YE2 | Sun, 08 Nov 2026 09:00:00 +0000 |
YE2 |
C=US, O=ISRG, CN=Root YE | Sat, 02 Sep 2028 23:59:59 +0000 |
Root YE |
C=US, O=Internet Security Research Group, CN=ISRG Root X2 | Thu, 02 Sep 2032 23:59:59 +0000 |
ISRG Root X2 |
C=US, O=Internet Security Research Group, CN=ISRG Root X1 | Thu, 02 Sep 2032 23:59:59 +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 receiptEd25519 Receipt
- Receipt ID
rcpt_1bb3428c05479fa8- Output Hash
bb983a2c0aaa5ecc8248ba9b7d65b9db380a4c7c0bbaf2d577c407cc298608e8- Signature
ed25519:28c02e8b637ed8308a1c99e019600c752fc0d0591ed5ab7c53c295a20418593cf3dea6d5f7df7075cf2d8b406ec3f26efa92049ddb5f89c44563d3db9b2cec01- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast