duel.tech
Observed Jul 29, 2026, 04:57 UTC (11h 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 byGoogle Workspace
Secured byLet's Encrypt
Also usesGoogle Search ConsoleHubSpot
IPv6 · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat duel.tech actually stands on - every host below is a signed observation
duel.tech
A / AAAA
104.18.27.5104.18.26.52606:4700::6812:1b052606:4700::6812:1a05
Cloudflareserves the site
NS
chin.ns.cloudflare.comed.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
aspmx.l.google.comalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx2.googlemail.com+1 more
Google Workspacereceives its email
TLS
duel.tech
Let's Encryptissued its certificate
DNS Records
A 2
104.18.27.5104.18.26.5
AAAA 2
2606:4700::6812:1b052606:4700::6812:1a05
MX 5
10aspmx.l.google.com20alt1.aspmx.l.google.com30alt2.aspmx.l.google.com40aspmx2.googlemail.com50aspmx3.googlemail.com
TXT 6
MS=ms44501749MS=ms46684013MS=ms47891472google-site-verification=p4oTxfxFmMCquIDjabq4L9VBsyx4zrHRiiA7DEa_ZNYv=spf1 include:_spf.google.com include:spf.mandrillapp.com include:4870528.spf10.hubspotemail.net ~allv=DMARC1; p=quarantine; pct=10;
NS 2
chin.ns.cloudflare.comed.ns.cloudflare.com
SOA 1
chin.ns.cloudflare.com dns.cloudflare.com
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
duel.tech |
C=US, O=Let's Encrypt, CN=YE2 | Tue, 01 Sep 2026 01:30:20 +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 (2)
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_d26220a29fb8c754- Output Hash
d5ad7be85cf0cb91d970e493655c98372431e8338c893a06acd5683fca67996d- Signature
ed25519:f05d52a25f52c9a418379c309a720bafa1da45d6e04e57fb0d5df5e329538092f18a38025decf621658cbe35e07a96f3604524a32a24093ebf84f2dcccc51406- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast