dsb1.ca
Observed Jul 28, 2026, 10:52 UTC (1d 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
Email byMicrosoft 365
Secured byLet's Encrypt
Also usesGoogle Search Console
tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat dsb1.ca actually stands on - every host below is a signed observation
dsb1.ca
A / AAAA
104.18.190.233104.16.158.133104.16.159.133104.18.189.233
Cloudflareserves the site
NS
ns1-38.azure-dns.comns2-38.azure-dns.netns3-38.azure-dns.orgns4-38.azure-dns.info
azure-dns.com + azure-dns.net + moreanswers its DNS
MX
dsb1-ca.mail.protection.outlook.com
Microsoft 365receives its email
TLS
dsb1.ca
Let's Encryptissued its certificate
DNS Records
A 4
104.18.190.233104.16.158.133104.16.159.133104.18.189.233
MX 1
0dsb1-ca.mail.protection.outlook.com
TXT 9
apple-domain-verification=zOc3lS6b8w74B5y5MS=ms76612461z5uyvqK1rRo3lxTT4RUgTQrH3J2dYGG1kX2IuD2U98rHbJc6yYLd+AfBnSURHCKm/sYA+m8GDTItlrV6C4Z6kQ==google-site-verification=DDOM39zeZneTmhiLiFGhi12wo6ORvBTVIaDK31y3ubUv=spf1 ip4:207.35.161.226 ip4:207.35.163.186 include:spf.protection.outlook.com include:sendgrid.net include:customerspf.schoolmessenger.com include:calendar-server.bounces.google.com include:trix.bounces.google.com ~allbw=3nU5Hf6EkV4DsdyTwjq28T5irZJ1QOIJBcK6164DbIxIdell-technologies-domain-verification=dsb1.ca_c38e9b73-cdff-45c3-aa34-b3792b5eba50_1755888959adeptat-domain-verification=4k3WEuI-uvzlpVQclqoxsqKcta2DOx6ogStSQ-Iwv=DMARC1; p=quarantine; rua=mailto:rua@dsb1.ca; ruf=mailto:ruf@dsb1.ca; pct=100; adkim=s; aspf=s
NS 4
ns1-38.azure-dns.comns2-38.azure-dns.netns3-38.azure-dns.orgns4-38.azure-dns.info
SOA 1
ns1-38.azure-dns.com azuredns-hostmaster.microsoft.com
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
dsb1.ca |
C=US, O=Let's Encrypt, CN=YE1 | Mon, 21 Sep 2026 13:05:14 +0000 |
YE1 |
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; nothing leaves your machine.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_a270b05e76a81866- Output Hash
de5bb9c5e38d9377f3b738c05e32e592e022e3722f7040f58d234e6eb63a2615- Signature
ed25519:732b55b00157ae80a49cc57b643c2c180cb9a1c47c7670701abb8bbed612e4f697ebb017735ceb775936975b58f4e1e4251467d77be36b73ab53cefbcafb4609- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast