gunnerkrigg.com

HTML metadata

Technology

CDN

Cloudflare

Analytics

• Google Tag Manager

Third-party hosts loaded (3)

• cdn.fuseplatform.net×1
• www.facebook.com×1
• www.googletagmanager.com×1

Social

• twitter

Registration

Registrar

DreamHost, LLC

Created

2005-08-12

Expires

2026-08-12 85 days left

Updated

2025-07-12

Name servers

• amit.ns.cloudflare.com
• zita.ns.cloudflare.com

DNS records live

NS

• amit.ns.cloudflare.com
• zita.ns.cloudflare.com

MX

• 0 mx1.dreamhost.com
• 0 mx2.dreamhost.com

Email authentication weak

SPF

v=spf1 mx include:netblocks.dreamhost.com include:relay.mailchannels.net -all

strict (-all)

DMARC

not published

DKIM

no key found at common selectors

Certificate (current)

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.gunnerkrigg.com/

findings

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

Links to (5)

• patreon.com×4
• proboards.com×4
• houghtona.com×4
• topatoco.com×4
• twitter.com×4

Linked from (11)

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