nbt.com
Observed Jul 21, 2026, 19:22 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
Runs onKorea Telecom
Email byGoogle Workspace
Secured byLet's Encrypt
Registered withGabia, Inc.
Also usesAtlassianGoogle Search Console
1 subdomain · fortune_500
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat nbt.com actually stands on - every host below is a signed observation
nbt.com
A / AAAA
183.111.138.207
Korea Telecomserves the site
NS
ns-1160.awsdns-17.orgns-1895.awsdns-44.co.ukns-249.awsdns-31.comns-563.awsdns-06.net
awsdns-17.org + awsdns-44.co.uk + moreanswers its DNS
MX
aspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comms17177191.msv1.invalid+2 more
Google Workspacereceives its email
TLS
nbt.com
Let's Encryptissued its certificate
DNS Records
A 1
183.111.138.207
MX 6
1aspmx.l.google.com10aspmx2.googlemail.com10aspmx3.googlemail.com32767ms17177191.msv1.invalid5alt1.aspmx.l.google.com5alt2.aspmx.l.google.com
TXT 8
atlassian-domain-verification=RWV5zZqK99kNHLoliYp37bNcZs8rWSY6Yi6KEIW2IPCJkteNasgldolJKiAnKvSGatlassian-sending-domain-verification=78b2efa6-54dc-419f-8a48-ec07fa037bfagoogle-site-verification=95fBO-DDNYYMZpIQHIfVp3g_nH9f1QWnJJnIcOlzKkkgoogle-site-verification=qUdcurZI-N8XW9PNcmzdAeOVh1MMuPCb-4Gf6-HhN8Mmailer.domain.verification=wLpz9NhCB1aJtcROaEh7206Nmvhlr6new-relic-domain-verification=73a8e6a94fe84fc1a4308f4b7138ab0ev=spf1 include:amazonses.com include:_spf.google.com include:mail.stibee.com include:email.ncloud.com ~allv=DMARC1; p=none;
NS 4
ns-1160.awsdns-17.orgns-1895.awsdns-44.co.ukns-249.awsdns-31.comns-563.awsdns-06.net
SOA 1
ns-249.awsdns-31.com awsdns-hostmaster.amazon.com
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
nbt.com |
C=US, O=Let's Encrypt, CN=YR1 | Tue, 13 Oct 2026 15:22:33 +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_d72a4560f5ddea04- Output Hash
93367083f28ab3a817288b4901c9e9e4fe9f9ca44dc8c7ccdb801532b7f1fd69- Signature
ed25519:6f6a1b6aba8e72b41f9944a5c4cfdf428197015053ca4750ab43775f9c44669fe584edf3814d2ae6d7c290e07f7afc58512b0144420e5a8ddcdee1edebb6a307- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast