indexo.dev

selfimproving.dev

.dev crawl

First seen 2026-04-11 · Last seen 2026-04-29 · ok HTTP/1.1 200 308 ms crawled 2026-05-18

US · 151.101.65.195 · AS54113 Fastly, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
The Self-Improving Developer
Description
You’ve taught yourself variables, classes, functions, objects. What next?
Language
en-US

Open Graph

url
https://selfimproving.dev/
title
The Self-Improving Developer
locale
en_US
image:url
https://selfimproving.dev/images/selfimproving-og-image.png
site name
The Self-Improving Developer
description
You’ve taught yourself variables, classes, functions, objects. What next?

Technology

Analytics
  • Google Tag Manager

Third-party hosts loaded (1)

  • www.googletagmanager.com×1

DNS records live

NS
  • ns.forpsi.cz
  • ns.forpsi.it
  • ns.forpsi.net
TXT
  • google-site-verification=rDsUYo8kFRbk9J9_WFv45FfdyJMy-2EOTl5ZWramM5s

Email authentication no MX

SPF
not published
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

WR3
from 2026-04-22 to 2026-07-21
Expires in 63 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://selfimproving.dev/

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=31556926

Linked from (1)