dtsf.com
Observed Jul 27, 2026, 09:41 UTC (6d 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 · domcop
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat dtsf.com actually stands on - every host below is a signed observation
dtsf.com
A / AAAA
174.138.69.209
unattributedserves the site
NS
bingo.ns.cloudflare.commatteo.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
dtsf-com.mail.protection.outlook.com
Microsoft 365receives its email
TLS
dtsf.com
Let's Encryptissued its certificate
DNS Records
A 1
174.138.69.209
MX 1
0dtsf-com.mail.protection.outlook.com
TXT 2
v=spf1 include:spf.protection.outlook.com -allv=DMARC1; p=none; rua=mailto:dmarc@dtsf.com; ruf=mailto:dmarc@dtsf.com; fo=1;
NS 2
bingo.ns.cloudflare.commatteo.ns.cloudflare.com
SOA 1
bingo.ns.cloudflare.com dns.cloudflare.com
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
dtsf.com |
C=US, O=Let's Encrypt, CN=YR1 | Fri, 25 Sep 2026 15:35:46 +0000 |
YR1 |
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 receiptEd25519 Receipt
- Receipt ID
rcpt_ea4b2ecff9bc7c6f- Output Hash
a0cdd5565732d780727af03e70a5f3cc4332cbc987791c7507ab48de4c98ad05- Signature
ed25519:7b9feedc432c3189cb7df675e9a6cf5a76682ca08757ffee07cf7169ee8e5d0374650ea364d1e42193d945633443f109186efc54908fd2dd272d29e9b2be1100- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast