calhoun.io

.io crawl

First seen 2026-04-14 · Last seen 2026-05-13 · ok HTTP/1.1 200 1167 ms crawled 2026-05-07

US · 104.198.14.52 · AS396982 Google LLC

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title

Calhoun.io - Go for Everyone

Description

...

Generator

Hugo 0.58.3

Feeds

RSS RSS
Calhoun.io - Go for Everyone RSS

Open Graph

url: https://www.calhoun.io
title: Calhoun.io - Go for Everyone
site name: Calhoun.io
description: ...

Technology

CDN: Netlify
CMS: Hugo

Analytics

Google Tag Manager

Fonts

Google Fonts

Social widgets

Twitter Widget

Third-party hosts loaded (4)

fonts.googleapis.com×1
platform.twitter.com×1
www.googletagmanager.com×1
www.gravatar.com×1

Social

DNS records live

NS

ns1.dnsimple.com
ns2.dnsimple-edge.net
ns3.dnsimple.com
ns4.dnsimple-edge.org

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=owk1wyS_hRwrrLL8Hrqlf9ERLS8vaOqsJickW4QUAT8
stripe-verification=11026a891986dd7e0637e22d891bb4dbf676d47e6d28e301907509c909baa3ce
google-site-verification=trBaqZx_tBnXgnt6D9_k1qlGtv8lRFaG9a5-dqoCW6Y

Email authentication partial

SPF: v=spf1 include:_spf.google.com include:ckespa.calhoun.io include:mailgun.org -all
strict (-all)
DMARC: v=DMARC1; p=none; rua=mailto:dmarc-reports@calhoun.io;
policy: none (monitoring only)
DKIM: no key found at common selectors

Certificate (current)

from 2026-05-01 to 2026-07-30

Expires in 71 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://www.calhoun.io/

present

strict-transport-security

findings

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

Header values

strict-transport-security: max-age=31536000