markdownguide.org

.org crawl

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 1833 ms crawled 2026-05-18

US · 151.101.131.52 · AS54113 Fastly, Inc.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title: Markdown Guide
Description: A free and open-source reference guide that explains how to use Markdown.
Language: en
Canonical: https://www.markdownguide.org/

Open Graph

url: https://www.markdownguide.org/
title: Markdown Guide
description: A free and open-source reference guide that explains how to use Markdown.

Technology

Server: nginx

Third-party hosts loaded (3)

assets.jotbird.com×1
hawk.forklabs.com×1
media.ethicalads.io×1

Social

Registration

Registrar

NameCheap, Inc.

Created

2017-01-27

Expires

2027-01-27 253 days left

Updated

2026-01-02

Name servers

amy.ns.cloudflare.com
phil.ns.cloudflare.com

DNS records live

NS

amy.ns.cloudflare.com
phil.ns.cloudflare.com

MX

10 in1-smtp.messagingengine.com
20 in2-smtp.messagingengine.com

TXT

ahrefs-site-verification_f0f099004e96b064122135556e57af335563ef0864adf369a1458256ea863d2c
google-site-verification=zbgz00_KoRD4wzQ58AE0MQL9rOKe9hmkQv8De5cIEe0

Email authentication weak

SPF: v=spf1 include:spf.messagingengine.com ~all
softfail (~all)
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

Certainly Intermediate R1

from 2026-05-09 to 2026-06-08

Expires in 20 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 80/100 Checked live page: https://www.markdownguide.org/

present

strict-transport-security
x-frame-options
x-content-type-options
referrer-policy
permissions-policy

findings

missing Content Security Policy

Header values

referrer-policy: strict-origin-when-cross-origin
x-frame-options: DENY
permissions-policy: interest-cohort=()
x-content-type-options: nosniff
strict-transport-security: max-age=31557600