arosa.ch
Observed Jul 25, 2026, 23:10 UTC (2d 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
Email byMicrosoft 365
Secured byLet's Encrypt
1 subdomain · majestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat arosa.ch actually stands on - every host below is a signed observation
arosa.ch
A / AAAA
49.12.148.136
unattributedserves the site
NS
de.ch-inter.netnl.ch-inter.netch.ch-inter.net
ch-inter.netanswers its DNS
MX
arosa-ch.mail.protection.outlook.com
Microsoft 365receives its email
TLS
www.arosa.ch
Let's Encryptissued its certificate
DNS Records
A 1
49.12.148.136
MX 1
0arosa-ch.mail.protection.outlook.com
TXT 3
v=spf1 a mx ip4:217.6.38.131 ip4:194.209.86.50 ip4:185.157.0.64/29 ip4:81.63.140.250 include:spf.protection.outlook.com include:servers.mcsv.net a:relay01.wlk-ems.com -allMS=ms17687745v=DMARC1; p=none
NS 3
de.ch-inter.netnl.ch-inter.netch.ch-inter.net
SOA 1
ch.ch-inter.net it.arosa.ch
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
www.arosa.ch |
C=US, O=Let's Encrypt, CN=YR2 | Sat, 17 Oct 2026 05:25:29 +0000 |
YR2 |
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 (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; nothing leaves your machine.
Verify this receiptPut the receipt on your own site. A live badge showing what DomainDrift observes and signs for arosa.ch. It updates itself. It attests a signed observation - not that the site is safe.
<a href="https://domaindrift.io/t/arosa.ch">
<img src="https://domaindrift.io/badge/arosa.ch.svg"
width="300" height="64" alt="DomainDrift signed observations for arosa.ch">
</a>
Ed25519 Receipt
- Receipt ID
rcpt_49284ed1391f7685- Output Hash
2b602366219b40ad461d1221303d65d4dd8380177ab42a2cfcd63b0737d1999c- Signature
ed25519:b27dc387a6fd2802c1e462838248b9d72b9db029a72c4917a3a2d2e52956385dac53a7342d7a3dc0fb6bd01fdbbd51f4465fa03675940345942278fa3395a604- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast