yescourse.com
Observed Jul 27, 2026, 19:36 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 byAmazon SES
Secured byGoogle Trust Services
Also usesGoogle Search Console
IPv6 · 1 subdomain · domcop
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat yescourse.com actually stands on - every host below is a signed observation
yescourse.com
A / AAAA
130.211.37.1372600:1901:0:e4f::
2600serves the site
NS
ns-cloud-a3.googledomains.comns-cloud-a2.googledomains.comns-cloud-a1.googledomains.comns-cloud-a4.googledomains.com
googledomains.comanswers its DNS
MX
mail.yescourse.com
Amazon SESreceives its email
TLS
yescourse.com
Google Trust Servicesissued its certificate
DNS Records
A 1
130.211.37.137
AAAA 1
2600:1901:0:e4f::
MX 1
10mail.yescourse.com
TXT 4
v=spf1 a mx include:mailgun.org include:amazonses.com ~allgoogle-site-verification=6Ph43jqVDtY0LtSqaOQlK7_G1pvr9JQ10Jw42Xc_QlUspf2.0/pra a mx include:amazonses.com -allv=DMARC1; p=quarantine; rua=mailto:dmarc@yescourse.com
NS 4
ns-cloud-a3.googledomains.comns-cloud-a2.googledomains.comns-cloud-a1.googledomains.comns-cloud-a4.googledomains.com
SOA 1
ns-cloud-a1.googledomains.com cloud-dns-hostmaster.google.com
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
yescourse.com |
C=US, O=Google Trust Services, CN=WR3 | Mon, 28 Sep 2026 00:47:02 +0000 |
WR3 |
C=US, O=Google Trust Services LLC, CN=GTS Root R1 | Tue, 20 Feb 2029 14:00:00 +0000 |
GTS Root R1 |
C=BE, O=GlobalSign nv-sa, 2.5.4.11=Root CA, CN=GlobalSign Root CA | Fri, 28 Jan 2028 00:00:42 +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_52551843389ba2eb- Output Hash
bbdabdf3a83f79f8b13bf90d942f74bc3719fb5970303c1345e755c9b5e5a4b6- Signature
ed25519:72a62d0dacfae4ebd164eff6a97349917d44ee24c1f9ae963b69ba730b80f458744fd46c0b7276288ae527db4e5d45568b1450502cc79f2a0115ef212dcbb009- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast