leadsigma.com
Observed Aug 12, 2026, 03:34 UTC (3h 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 byGoogle Workspace
Secured byLet's Encrypt
Also usesGoogle Search ConsoleHubSpot
tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat leadsigma.com actually stands on - every host below is a signed observation
leadsigma.com
A / AAAA
216.198.79.1
unattributedserves the site
NS
ns-1458.awsdns-54.orgns-1971.awsdns-54.co.ukns-312.awsdns-39.comns-754.awsdns-30.net
awsdns-54.org + awsdns-54.co.uk + moreanswers its DNS
MX
aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comalt1.aspmx.l.google.com+1 more
Google Workspacereceives its email
TLS
leadsigma.com
Let's Encryptissued its certificate
DNS Records
A 1
216.198.79.1
MX 5
1aspmx.l.google.com10alt3.aspmx.l.google.com10alt4.aspmx.l.google.com5alt1.aspmx.l.google.com5alt2.aspmx.l.google.com
TXT 5
MS=D1CA6F148C5BDB7D3AE9B07BAF765F9E197318B3google-site-verification=EfqgpSY02SO65EBWscS2TTWsCS7kCAmMtPhqLK7UesQgoogle-site-verification=Wqw0yY_6PFbqaNooOEknTffXZZOaPddPV9t06y-2BSIhubspot-developer-verification=NTEzNTU0MTEtOGE4Zi00NTFkLTkwMzYtNTY4Y2UwMTZlMjI1v=spf1 include:et._spf.pardot.com include:cust-spf.exacttarget.com include:aspmx.pardot.com include:_spf.google.com include:amazonses.com ~all
NS 4
ns-1458.awsdns-54.orgns-1971.awsdns-54.co.ukns-312.awsdns-39.comns-754.awsdns-30.net
SOA 1
ns-1971.awsdns-54.co.uk awsdns-hostmaster.amazon.com
DMARC_RECORDS 1
v=DMARC1; p=none; rua=mailto:john@leadsigma.com; aspf=r; adkim=r
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
leadsigma.com |
C=US, O=Let's Encrypt, CN=YR2 | Sun, 27 Sep 2026 20:42:39 +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 (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; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_bd9092f78666d4b3- Output Hash
ab7a9dbce0fe654fa82fc2a28884bf47ea6696b136d5089a7b13f231f763624a- Signature
ed25519:79d33bb3584071a079bc609345ab53020fdaf114e1c64ec7ecca8ae166facd32a56fd69f5b02d2481f51450eafa7f8422cd53fbb84852c95b72905883457f203- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast