joshkaufman.net
Observed Aug 16, 2026, 14:24 UTC (7h 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
CloudflareSecured byGoogle Trust Services
Google Trust ServicesAlso usesGoogle Search Console
Google Search ConsoleIPv6 · majestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat joshkaufman.net actually stands on - every host below is a signed observation
joshkaufman.net
A / AAAA
172.67.143.53104.21.39.462606:4700:3033::ac43:8f352606:4700:3034::6815:272e
Cloudflareserves the site
NS
glen.ns.cloudflare.commegan.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
in1-smtp.messagingengine.comin2-smtp.messagingengine.com
messagingengine.comreceives its email
TLS
joshkaufman.net
Google Trust Servicesissued its certificate
DNS Records
A 2
172.67.143.53104.21.39.46
AAAA 2
2606:4700:3033::ac43:8f352606:4700:3034::6815:272e
MX 2
10in1-smtp.messagingengine.com20in2-smtp.messagingengine.com
TXT 3
google-site-verification=ZcEqOuYujAitZJGYMqfg8yXdbsqAQ6bDgCO6oSGHNdEgoogle-site-verification=dlxabJrlTTIVEanVnU-zWTKvH4NyiGE6h14ecgMg8VEv=spf1 include:spf.messagingengine.com ?all
NS 2
glen.ns.cloudflare.commegan.ns.cloudflare.com
SOA 1
glen.ns.cloudflare.com dns.cloudflare.com
DMARC_RECORDS 1
v=DMARC1; p=none; pct=100; rua=mailto:re+biojqmui0jb@dmarc.postmarkapp.com; sp=none; aspf=r;
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
joshkaufman.net |
C=US, O=Google Trust Services, CN=WE1 | Mon, 02 Nov 2026 22:29:50 +0000 |
WE1 |
C=US, O=Google Trust Services LLC, CN=GTS Root R4 | Tue, 20 Feb 2029 14:00:00 +0000 |
GTS Root R4 |
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 (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_2426a7bd258f3eaa- Output Hash
93005f64774b2251ec4d12ecf2c85b8cdb66116977afc70cb43f1666ae987d38- Signature
ed25519:18689d4336d3b071129a3547629b448da530e00c15c235574549bce1c3159604840221cea6ae9ce1ee4a429c347b478fbd3dc419dab761fc0eac0062aa9af207- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast