indexo.dev

mattjennings.io

.io crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 2500 ms crawled 2026-05-18

US · 64.29.17.1 · AS16509 Amazon.com, Inc.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
Matt Jennings
Language
en

Open Graph

url
https://mattjennin.gs
title
Matt Jennings
description
Full-stack developer based in Canada. I enjoy building apps and games for the web, watching hockey, and making espresso.

Technology

CDN
Vercel

Third-party hosts loaded (1)

  • img.shields.io×1

Social

Contact

Email

DNS records live

NS
  • ns1.vercel-dns.com
  • ns2.vercel-dns.com
MX
  • 10 in1-smtp.messagingengine.com
  • 20 in2-smtp.messagingengine.com
Verified for
  • Google

Email authentication weak

SPF
v=spf1 include:spf.messagingengine.com ?all
neutral (?all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-03-30 to 2026-06-28
Expires in 38 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://mattjennings.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=63072000

Links to (7)

Linked from (1)