indexo.dev

jonathan.com

.com crawl

First seen 2026-05-08 · Last seen 2026-05-08 · ok HTTP/1.1 200 1581 ms crawled 2026-05-15

US · 104.21.76.225 · AS13335 Cloudflare, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
Jonathan Castello
Description
The website & blog of Jonathan Castello.
Language
en-US
Feeds

Open Graph

url
https://jonathan.com/
title
Jonathan Castello
site name
Jonathan Castello
description
The website & blog of Jonathan Castello.

Technology

CDN
Cloudflare

Third-party hosts loaded (2)

  • cdn.jsdelivr.net×1
  • cdnjs.cloudflare.com×1

Social

Registration

Registrar
Moniker Online Services LLC
Created
1997-06-06
Expires
2026-06-05 16 days left
Updated
2025-11-25
Name servers
  • amber.ns.cloudflare.com
  • merlin.ns.cloudflare.com

DNS records live

NS
  • amber.ns.cloudflare.com
  • merlin.ns.cloudflare.com
MX
  • 10 in1-smtp.messagingengine.com
  • 20 in2-smtp.messagingengine.com

Email authentication strong

SPF
v=spf1 include:spf.messagingengine.com ?all
neutral (?all)
DMARC
v=DMARC1; p=quarantine; rua=mailto:twisolar@gmail.com
policy: quarantine
DKIM
no key found at common selectors

Certificate (current)

WE1
from 2026-04-08 to 2026-07-07
Expires in 49 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://jonathan.com/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (6)

Linked from (1)