blue.ch
Observed Aug 16, 2026, 13:05 UTC (8h 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 onSwisscom (Schweiz)
Secured bySwissSign AG
Also usesSwissSignMindmanagerOneTrustJamfGoogle Search ConsoleMicrosoft 365Facebook/MetaMiro
SwissSign
OneTrust
Jamf
Google Search Console
Microsoft 365
Facebook/Meta
Miro1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat blue.ch actually stands on - every host below is a signed observation
blue.ch
A / AAAA
138.190.84.94
Swisscom (Schweiz)serves the site
NS
dns2.swisscom.comdns3.swisscom.comdns1.swisscom.com
swisscom.comanswers its DNS
MX
mail10.swisscom.commail.swisscom.commail20.swisscom.com
swisscom.comreceives its email
TLS
blue.ch
SwissSign AGissued its certificate
DNS Records
A 1
138.190.84.94
MX 3
20mail10.swisscom.com10mail.swisscom.com20mail20.swisscom.com
TXT 12
swisssign-check=hnZ1sR1wTUXIpX1uq5pP5K9mGPImindmanager-verification=30ec1ae05d7d5ea89d62efa3d0dfad114853edadbdc46102f438bde80e6b8016onetrust-domain-verification=196a72ac0b51497fbdf688d96ac3c7f5v=spf1 ip4:5.148.171.172 ip4:5.148.171.177 ip4:5.148.180.102 ip4:13.111.103.57 ip4:149.72.129.28 ip4:149.72.181.196 ip4:195.176.132.54 ip4:217.150.241.52 ip4:217.150.241.55 ip4:217.150.241.56 include:_spf.pluspol-networks.de include:_spf.online.superoffice.com include:spf.appmail.swisscom.com include:spf.smtp2go.com include:spf.swisscom.com include:_spf.callexpert.ch -allswisssign-check=SPhlAryvGVV217PTDFcbqlCCcnkjamf-site-verification=fXNOPhfM3lCRyZc1bdTHJAgoogle-site-verification=4FowzSxEQwNfsuoShpOQOzNyDH7OhjKgWuSPqA-yPnUMS=ms66304029facebook-domain-verification=pa9syugysmkv5gonchmodpt073j0p5miro-verification=5209d46a6a61b079ea076df05fc46e6386d28892
NS 3
dns2.swisscom.comdns3.swisscom.comdns1.swisscom.com
SOA 1
dns3.swisscom.com admin\.dns.swisscom.com
DMARC_RECORDS 1
v=DMARC1; p=none; pct=100; rua=mailto:reports-rua@swisscom.com; ruf=mailto:reports-ruf@swisscom.com;
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
blue.ch |
C=CH, O=SwissSign AG, CN=SwissSign RSA TLS OV ICA 2022 - 1 | Wed, 16 Dec 2026 12:31:33 +0000 |
SwissSign RSA TLS OV ICA 2022 - 1 |
C=CH, O=SwissSign AG, CN=SwissSign RSA TLS Root CA 2022 - 1 | Sun, 29 Jun 2036 09:34:30 +0000 |
SwissSign RSA TLS Root CA 2022 - 1 |
C=CH, O=SwissSign AG, CN=SwissSign Gold CA - G2 | Mon, 22 Sep 2036 11:27:11 +0000 |
Subdomains (1)
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_bbb0e10632aa1318- Output Hash
3d0197e4d75ff302a12dbee6900b7eba77123c1bcb46ea73e6398bf561f788bc- Signature
ed25519:0acade350c2775b26a7165bbe1f50d55871c67486dd62e3b17535e784535202fd59679915cfefb18dd649f6dfac51431565465b100557acd3e8636de617cbd06- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast