indexo.dev

ultimateelectronicsbook.com

.com crawl

First seen 2026-04-15 · Last seen 2026-05-07 · ok HTTP/1.1 200 1973 ms crawled 2026-05-10

US · 18.165.140.78 · AS16509 Amazon.com, Inc.

Reputation 95/100 weak security headers

sector tech type blog

HTML metadata

Title
Table of Contents | Ultimate Electronics Book
Description
A free, interactive book for electronics hobbyists and electrical engineering students: Practical Circuit Design and Analysis.
Language
en
Generator
Jekyll v4.1.1
Canonical
https://ultimateelectronicsbook.com/

Open Graph

url
https://ultimateelectronicsbook.com/
title
Table of Contents
locale
en_US
site name
Ultimate Electronics Book
description
A free, interactive book for electronics hobbyists and electrical engineering students: Practical Circuit Design and Analysis.

Technology

CDN
Amazon CloudFront
Server
AmazonS3

Third-party hosts loaded (3)

  • cdnjs.cloudflare.com×1
  • instant.page×1
  • www.circuitlab.com×1

Registration

Registrar
Porkbun LLC
Created
2019-02-09
Expires
2027-02-09 264 days left
Updated
2024-12-31
Name servers
  • ns-1366.awsdns-42.org
  • ns-1623.awsdns-10.co.uk
  • ns-284.awsdns-35.com
  • ns-528.awsdns-02.net

DNS records live

NS
  • ns-1366.awsdns-42.org
  • ns-1623.awsdns-10.co.uk
  • ns-284.awsdns-35.com
  • ns-528.awsdns-02.net
Verified for
  • Google

Email authentication no MX

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

Certificate (current)

Amazon RSA 2048 M04
from 2025-07-22 to 2026-08-20
Expires in 91 days

Full certificate history on crt.sh ↗

HTTP security headers

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

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

Links to (1)

Linked from (1)