hybridletter.com

HTML metadata

Title

The Hybrid Letter | Substack

Description

Hyrox, Deka, and hybrid racing. A newsletter for strength and endurance athletes — and anyone who wants to become one. Click to read The Hybrid Letter, a Substack publication with tens of thousands of subscribers.

Language

en

Canonical

https://www.hybridletter.com/

Feeds

• The Hybrid Letter RSS

Open Graph

url

https://www.hybridletter.com/

title

The Hybrid Letter | Substack

description

Hyrox, Deka, and hybrid racing. A newsletter for strength and endurance athletes — and anyone who wants to become one. Click to read The Hybrid Letter, a Substack publication with tens of thousands of subscribers.

Technology

CDN

Cloudflare

CMS

Gatsby

Analytics

• Cloudflare Insights

Fonts

• Google Fonts

Third-party hosts loaded (4)

• substackcdn.com×253
• fonts.gstatic.com×1
• js.sentry-cdn.com×1
• static.cloudflareinsights.com×1

Registration

Registrar

GoDaddy.com, LLC

Created

2023-09-01

Expires

2027-09-01 469 days left

Updated

2025-09-02

Name servers

• ns41.domaincontrol.com
• ns42.domaincontrol.com

DNS records live

NS

• ns41.domaincontrol.com
• ns42.domaincontrol.com

MX

• 1 aspmx.l.google.com
• 10 alt3.aspmx.l.google.com
• 10 alt4.aspmx.l.google.com
• 5 alt1.aspmx.l.google.com
• 5 alt2.aspmx.l.google.com

TXT

• v=spf1 include:dc-aa8e722993._spfm.hybridletter.com ~all

Verified for

• Google

Certificate (current)

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 65/100 Checked live page: https://www.hybridletter.com/

present

• strict-transport-security
• content-security-policy

findings

• CSP uses wildcard sources
• missing frame protection
• missing content type protection
• missing Referrer Policy
• missing Permissions Policy

Links to (5)

• substack.com×5
• enable-javascript.com×2
• runningsucks101.com×2
• twopct.com×2
• thehalfmarathoner.com×1

Linked from (1)

• twopct.com×3