halon.io

.io crawl

First seen 2026-04-14 · Last seen 2026-05-19 · ok HTTP/1.1 200 994 ms crawled 2026-05-08

US · 199.60.103.2 · AS209242 Cloudflare London, LLC

Reputation 100/100

Classifying

HTML metadata

Title: Halon | Email Infrastructure and Security
Description: Email Infrastructure and security - ready-made by us, but controlled by you.
Language: en
Generator: HubSpot
Canonical: https://halon.io

Open Graph

url: https://halon.io
title: Halon | Email Infrastructure and Security
description: Email Infrastructure and security - ready-made by us, but controlled by you.

Technology

CDN: Cloudflare

Analytics

Google Tag Manager

Third-party hosts loaded (3)

www.googletagmanager.com×4
js.ipredictive.com×1
px.ads.linkedin.com×1

Social

DNS records live

NS

chin.ns.cloudflare.com
newt.ns.cloudflare.com

MX

5 mx1.halon.io
5 mx2.halon.io

TXT

status-page-domain-verification=1b9ln823574v

Verified for

Atlassian
Google

Email authentication strong

SPF

v=spf1 include:_spf.halon.io include:mail.zendesk.com include:servers.mcsv.net include:spf.mandrillapp.com include:2734201.spf02.hubspotemail.net include:stspg-customer.com -all

strict (-all)

DMARC

v=DMARC1; p=reject; rua=mailto:dmarc@halon.io; ruf=mailto:dmarc@halon.io;

policy: reject (enforced)

DKIM

k1: k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDbNrX2cY/GUKIFx2G/1I00ftdAj713WP9AQ1xir85i89sA2guU0ta4UX1Xzm06XIU6iBP41VwmPwBGRNofhBVR+e6WHUo…

selectors probed

Certificate (current)

WE1

from 2026-05-03 to 2026-08-01

Expires in 73 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 85/100 Checked live page: https://halon.io/

present

strict-transport-security
content-security-policy
x-content-type-options
referrer-policy

findings

missing frame protection
missing Permissions Policy

Header values

referrer-policy: no-referrer-when-downgrade
x-content-type-options: nosniff
content-security-policy: upgrade-insecure-requests
strict-transport-security: max-age=31536000