indexo.dev

jonkolko.com

.com crawl

First seen 2026-04-13 · Last seen 2026-05-07 · ok HTTP/1.1 200 603 ms crawled 2026-05-07

US · 76.76.21.142 · AS16509 Amazon.com, Inc.

Reputation 100/100

sector education type homepage

HTML metadata

Title
Jon Kolko - Designer, Design Leader, Educator
Description
Jon Kolko; design strategy, education and writing.
Language
en

Open Graph

locale
en_US
site name
Jon Kolko
description
Jon Kolko; design strategy, education and writing.

Technology

CDN
Vercel
CMS
Next.js

Social

Registration

Registrar
Name.com, Inc.
Created
2005-12-18
Expires
2026-12-18 212 days left
Updated
2026-04-24
Name servers
  • ns1.vercel-dns.com
  • ns2.vercel-dns.com

DNS records live

NS
  • ns1.vercel-dns.com
  • ns2.vercel-dns.com
TXT
  • google-site-verification=ZkejSvU6cVLhaam8_g6yVUS1gINY97ROhhF3aN22b-M

Email authentication no MX

SPF
not published
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-03-28 to 2026-06-26
Expires in 38 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://www.jonkolko.com/

present
  • strict-transport-security
findings
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
strict-transport-security
max-age=63072000

Links to (9)

Linked from (1)