indexo.dev

jxnl.co

.co crawl

First seen 2026-06-01 · Last seen 2026-06-01 · ok HTTP/1.1 200 258 ms crawled 2026-06-01

US · 104.21.42.148 · AS13335 Cloudflare, Inc.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Introductions - Jason Liu
Description
Notes on AI systems, open source, personal work, and the occasional life update from Jason Liu.
Language
en
Generator
mkdocs-1.6.1, mkdocs-material-9.7.6
Canonical
https://jxnl.co/
Feeds

Open Graph

url
https://jxnl.co/
title
Introductions - Jason Liu
description
Notes on AI systems, open source, personal work, and the occasional life update from Jason Liu.

Technology

CDN
Cloudflare
Fonts
  • Google Fonts

Third-party hosts loaded (4)

  • cdn.jsdelivr.net×2
  • cdnjs.cloudflare.com×1
  • fonts.googleapis.com×1
  • fonts.gstatic.com×1

Social

DNS records live

NS
  • elias.ns.cloudflare.com
  • may.ns.cloudflare.com
MX
  • 1 aspmx.l.google.com
  • 10 aspmx2.googlemail.com
  • 10 aspmx3.googlemail.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com
Verified for
  • Google

Email authentication weak

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

Certificate (current)

WE1
from 2026-04-21 to 2026-07-21
Expires in 48 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 45/100 Checked live page: https://jxnl.co/

present
  • x-content-type-options
  • referrer-policy
findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing Permissions Policy
Header values
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff

Links to (19)

Linked from (1)