indexo.dev

onlycfo.io

.io crawl

First seen 2026-05-02 · Last seen 2026-05-08 · ok HTTP/1.1 200 2766 ms crawled 2026-05-08

US · 15.197.225.128 · AS16509 Amazon.com, Inc.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
OnlyCFO's Newsletter | Substack
Description
Insights, benchmarks, and research for finance leaders. Click to read OnlyCFO's Newsletter, a Substack publication with tens of thousands of subscribers.
Language
en
Canonical
https://www.onlycfo.io/
Feeds

Open Graph

url
https://www.onlycfo.io/
title
OnlyCFO's Newsletter | Substack
description
Insights, benchmarks, and research for finance leaders. Click to read OnlyCFO's Newsletter, 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

DNS records live

NS
  • ns21.domaincontrol.com
  • ns22.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=Xl2dy1-8Kt_GTYqm9v_dgCQ0TfQNWc0lZDJ5rRUIXr4

Email authentication weak

SPF
v=spf1 include:dc-aa8e722993._spfm.onlycfo.io ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

GoDaddy TLS Intermediate CA DV - R1v1
from 2026-03-14 to 2026-09-28
Expires in 131 days

Full certificate history on crt.sh ↗

HTTP security headers

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

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

Links to (2)

Linked from (2)