calvinrobinson.com

.com crawl

First seen 2026-04-13 · Last seen 2026-05-07 · ok HTTP/1.1 200 1119 ms crawled 2026-05-07

US · 3.33.251.168 · AS16509 Amazon.com, Inc.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title

Fr Calvin Robinson | Substack

Description

Common Sense Crusade. Click to read Fr Calvin Robinson, a Substack publication with tens of thousands of subscribers.

Language

Canonical

https://www.calvinrobinson.com/

Feeds

Fr Calvin Robinson RSS

Open Graph

url: https://www.calvinrobinson.com/
title: Fr Calvin Robinson | Substack
description: Common Sense Crusade. Click to read Fr Calvin Robinson, 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×257
fonts.gstatic.com×1
js.sentry-cdn.com×1
static.cloudflareinsights.com×1

Social

Registration

Registrar

123-Reg Limited

Created

2007-04-20

Expires

2027-04-20 336 days left

Updated

2026-04-21

Name servers

ns09.domaincontrol.com
ns10.domaincontrol.com

DNS records live

NS

ns09.domaincontrol.com
ns10.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

google-site-verification=Sc9ZaFXcjPeA-z4cbubYKtSpwesgrejjTJgJys49vhY
google-site-verification=0VsYDpwwfNecXbczyChGQHDGZSTw8ISHDN8HSjjdGe0

Email authentication partial

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

Certificate (current)

GoDaddy TLS Intermediate CA DV - R1v1

from 2026-03-16 to 2026-09-30

Expires in 134 days

Full certificate history on crt.sh ↗

HTTP security headers

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

Header values

content-security-policy: frame-ancestors 'self' https://*.substack.com https://substack.com
strict-transport-security: max-age=31536000; includeSubDomains; preload