howtoopensource.dev

.dev crawl

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 1968 ms crawled 2026-05-19

US · 104.21.42.12 · AS13335 Cloudflare, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: How to Open Source
Description: How to Open Source: The missing open source handbook for new contributors
Language: en

Open Graph

url: https://howtoopensource.dev
title: How to Open Source
site name: How to Open Source
description: Learn the Secrets of Successful Contributors

Technology

CDN: Cloudflare

Analytics

Google Tag Manager

Fonts

Google Fonts

Third-party hosts loaded (2)

fonts.googleapis.com×2
www.googletagmanager.com×1

Social

DNS records live

NS

hal.ns.cloudflare.com
tricia.ns.cloudflare.com

TXT

ALIAS for howtoopensource.github.io

Email authentication no MX

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

Certificate (current)

WE1

from 2026-03-26 to 2026-06-24

Expires in 34 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://howtoopensource.dev/

findings

missing HSTS
missing Content Security Policy
missing frame protection
missing content type protection
missing Referrer Policy
missing Permissions Policy

Links to (2)

gumroad.com×3
twitter.com×3

Linked from (1)

schneems.com×3