highlightjs.org

.org crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 372 ms crawled 2026-05-18

US · 75.2.60.5 · AS16509 Amazon.com, Inc.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title: highlight.js
Description: The Internet's favorite JavaScript syntax highlighter supporting Node.js and the web.

Open Graph

url: https://highlightjs.org/
title: highlight.js

Technology

CDN: Netlify
CMS: Next.js

Third-party hosts loaded (1)

www.netlify.com×1

Social

Contact

Email

security@highlightjs.org

Registration

Registrar

Tucows Domains Inc.

Created

2012-05-22

Expires

2026-05-22 1 day left

Updated

2025-05-26

Name servers

ns1.hover.com
ns2.hover.com

DNS records live

NS

ns1.hover.com
ns2.hover.com

MX

10 mx.hover.com.cust.hostedemail.com

Email authentication weak

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

Certificate (current)

from 2026-03-27 to 2026-06-25

Expires in 36 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 60/100 Checked live page: https://highlightjs.org/

present

strict-transport-security
x-content-type-options

findings

missing Content Security Policy
missing frame protection
missing Referrer Policy
missing Permissions Policy

Header values

x-content-type-options: nosniff
strict-transport-security: max-age=31536000