learncodethehardway.org

HTML metadata

Technology

Server

Caddy

Fonts

• Google Fonts

Third-party hosts loaded (1)

• fonts.googleapis.com×1

Social

• twitter

Registration

Registrar

Gandi SAS

Created

2010-04-27

Expires

2027-04-27 342 days left

Updated

2026-03-23

Name servers

• ns-113-c.gandi.net
• ns-252-b.gandi.net
• ns-98-a.gandi.net

DNS records live

NS

• ns-113-c.gandi.net
• ns-252-b.gandi.net
• ns-98-a.gandi.net

MX

• 0 mail.learncodethehardway.org

TXT

• google-site-verification=1wTsc2OXvJUhTAjlfxUbYkZG49I4wmX8_RD3k1_UAe4

Email authentication partial

SPF

v=spf1 mx:mail.learncodethehardway.org ip4:138.201.193.136 ip4:95.216.45.211 include:shop.learncodethehardway.org a:learncodethehardway.org ~all

softfail (~all)

DMARC

v=DMARC1; p=none; rua=mailto:postmaster@learncodethehardway.org

policy: none (monitoring only)

DKIM

• default: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDO38rTr9DLIsRciJD98P4hHXzuo1drBKHUw4jpj+680BKZQVE+70JLWXQu7jcZE9DXPe4lJ5MkwPB3nqw5wX…

selectors probed

Certificate (current)

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://learncodethehardway.org/

findings

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

Links to (4)

• learncodethehardway.com×2
• learnpythonthehardway.org×2
• learnrubythehardway.org×2
• twitter.com×2

Linked from (3)

• learnrubythehardway.org×2
• learnpythonthehardway.org×2
• zedshaw.com×2