Denkou2-siken.com

denkou2-siken.com Profile

Title

第二種電気工事士ドットコム － 試験制度＆過去問題を徹底解説

Description

第二種電気工事士試験の解説でNo.1を目指す学習用サイトです。平成25年度から令和8年までの過去問題1,550問(解説付き)を無料で公開しています。さらに、試験の最新動向や過去問題の解説、質問用の掲示板など第二種電気工事士試験に関係する情報を発信しています。トップページの過去問題一問一答で理解度を確認しましょう。

Tags

電工 電工二種 第二種電気工事士試験 過去問題

Category

Computers Electronics and Technology / Consumer Electronics

Denkou2-siken.com is a specialized online platform designed to facilitate the preparation for the Denko Shiken, a Japanese electrical engineer certification examination. The website provides a comprehensive array of study materials, including past examination papers, practice questions, and detailed explanations to enhance users' understanding of core concepts. Additionally, it features interactive quizzes and progress tracking tools to monitor learning advancement. The user interface is clean and intuitive, prioritizing ease of navigation, with organized sections for different topics and resources, making it accessible for both novice and experienced candidates aiming to succeed in the certification process.

Edit Site Info

What technologies does denkou2-siken.com use?

These are the technologies used at denkou2-siken.com. denkou2-siken.com has a total of 9 technologies installed in 10 different categories.

Analytics 1

Google Analytics

Font Scripts 1

Google Font API

Tag Managers 1

Google Tag Manager

Web Servers 1

Nginx

Reverse proxies 1

Nginx

JavaScript Libraries 1

jQuery

SSL/TLS certificate authorities 1

Let's Encrypt

CDN 1

Google Hosted Libraries

Performance 1

Priority Hints

Miscellaneous 1

Open Graph

denkou2-siken.com Traffic Analysis

Denkou2-siken.com is ranked #176,258 in the world. This website is viewed by an estimated 2.5K visitors daily, generating a total of 49.5K pageviews. This equates to about 74.4K monthly visitors. Denkou2-siken.com traffic has increased by 18.35% compared to last month.

Daily Unique Visitors

2,457

Monthly Visits

74,447

Pages per Visit

20.14

Daily Pageviews

49,483

Avg. Visit Duration

23:53

Bounce Rate

20.27%

Global Reach

0.000041%

Monthly Visits (SEMrush)

64,605

Monthly Unique Visitors (SEMrush)

33,339

Monthly Visits (SimilarWeb)

72,271

HypeRank

176,258

SimilarWeb Rank

248,825

*All traffic values are estimates only.

denkou2-siken.com SEMrush Overview

SEMrush is a complete online advertising and marketing platform that gives a wide variety of tools and features to help businesses and marketers improve their online visibility and optimize their digital marketing strategies.

Domain

denkou2-siken.com

RankBased on keywords, cost and organic traffic

n/a

Organic KeywordsKeywords in top 20 Google SERP

0

Organic TrafficVisitors coming from top 20 search results

0

Organic CostEquivalent Google Ads spend for the same traffic

$0.00

Full SEMrush Report →

Backlinks Report

Denkou2-siken.com has a total of 1,576 backlinks from 1,361 referring domains and most of them comes from Singapore.

Which sites are competitors to denkou2-siken.com?

Websites similar to denkou2-siken.com are sites similar on user interests and browsing behavior. Users can discover new websites that are similar to the ones they already enjoy or find useful.

Domain	Daily Visitors
detail-infomation.com	8.9K	Compare →
jema-net.or.jp	2.1K	Compare →
e-sysnet.com	1.8K	Compare →
denki-no-shinzui.com	1.3K	Compare →

Revenue Report

denkou2-siken.com would generate approximately $17.3 per day if the source of income were advertisements, which equates to an estimated monthly revenue of $518.4 and annual gross revenue of approximately $6.3K. Based on these figures, the site's net worth is estimated at around $20.7K.

How much would denkou2-siken.com make?

How much is denkou2-siken.com worth?

*All earnings values are estimates only.

Impact of Ad Blockers

Ad Networks

ads.txt lists the companies authorized to sell advertising on a website. denkou2-siken.com lists 1 authorized seller entries, 1 of them direct.

Ad Experience Report

Summary of the ad and abusive experience ratings Google assigns to denkou2-siken.com, per platform.

Where is denkou2-siken.com hosted?

Denkou2-siken.com may be hosted in multiple data centers distributed in different locations around the world. This is probably just one of them.

Other sites hosted on 183.90.238.40

How fast does denkou2-siken.com load?

The average loading time of denkou2-siken.com is 1225 ms. The Desktop speed index is 94 and mobile speed index is 74.

Does denkou2-siken.com use compression?

Website compression is the process of reducing the size of website files, such as HTML, CSS, JavaScript, and image files, to improve website performance and load times. Compressing website files can significantly reduce the amount of data that needs to be transferred from the server to the user's browser, resulting in faster page load times and improved user experience. Files on denkou2-siken.com are reduced by 67%.

Google Safe Browsing

Google Safe Browsing is a service provided by Google that helps protect users from visiting websites that may contain malicious or harmful content, such as malware, phishing attempts, or deceptive software.

WOT MyWot.com Reputation Ratings

MyWOT (short for "My Web of Trust") is a web-based reputation and rating service that provides users with information about the trustworthiness and safety of websites.

Status

UNKNOWN

SSL Checker SSL Certificate Verify

An SSL (Secure Sockets Layer) certificate is a digital certificate that establishes a secure encrypted connection between a web server and a user's browser. It provides authentication and encryption, ensuring that data transmitted between the server and the browser remains private and protected. denkou2-siken.com supports HTTPS.

Security Headers

HTTP security headers tell browsers how to protect visitors: force HTTPS, block clickjacking and limit what scripts can do. denkou2-siken.com sends 0 of the 6 recommended security headers, and its SSL certificate is issued by Let's Encrypt.

Strict-Transport-Security

missing

Content-Security-Policy

missing

X-Frame-Options

missing

X-Content-Type-Options

missing

Referrer-Policy

missing

Permissions-Policy

missing

SSL issuer

Let's Encrypt

SSL expires

2026-12-09 in 47 days

Email Security

SPF, DKIM and DMARC are DNS records that prove which servers may send email for a domain and tell receivers what to do with forged messages. Missing or weak records make emails from denkou2-siken.com more likely to land in spam and the domain easier to spoof.

Email provider

own mail server

SPF

present

DMARC

none (monitoring only)

DKIM

found

DNSSEC

not signed

v=spf1 +a:sv2339.xserver.jp +a:denkou2-siken.com +mx include:spf.sender.xserver.jp ~all

AI Crawlers

Websites use robots.txt to allow or block AI crawlers that collect content for training and AI search. denkou2-siken.com blocks 4 of 26 known AI crawlers.

OpenAI

blocked GPTBot, ChatGPT-User

Google

blocked Google-Extended

Common Crawl

blocked CCBot

llms.txt

not found

Verify HTTP/2 & HTTP/3 Support

HTTP/2 (Hypertext Transfer Protocol version 2) is a major revision of the HTTP protocol, which is the foundation of data communication on the World Wide Web. It was developed as an improvement over the previous HTTP/1.1 version to enhance web performance and efficiency. HTTP/3 goes a step further and runs over QUIC instead of TCP, for faster connections and better performance on unreliable networks.

Http Header

HTTP headers are extra portions of records despatched among a consumer (which include an internet browser) and a server at some stage in an HTTP request or response. They offer instructions, metadata, or manipulate parameters for the conversation among the consumer and server.

server: nginx
date: Thu, 22 Oct 2026 21:52:37 GMT
content-type: text/html; charset=utf-8
vary: Accept-Encoding
cache-control: no-store
vary: Accept-Encoding
content-encoding: br

DNS Lookup

DNS entries (Domain Name System) are a critical component of the Internet infrastructure. They act as directories that translate human-readable domain names (such as example.com) to machine-readable IP addresses. DNS records are stored on DNS servers and help forward internet traffic efficiently.

Whois Lookup

Domain WHOIS is a public database that provides information about domain names, including registered owners, contact information, domain registrars, registration and expiration dates, name servers, and other relevant information. Domain registration for this website began on November 27, 2022 and will expire on November 27, 2026 if not renewed. This website is now assigned through the registrar GMO Internet Group, Inc. d/b/a Onamae.com. The WHOIS data for this website's domain was last updated on October 28, 2025.

Domain Created

2022-11-27

Domain Expires

2026-11-27

Domain Updated

2025-10-28

Domain Age

3 years 10 months 25 days

Domain Registrar

GMO Internet Group, Inc. d/b/a Onamae.com

   Domain Name: DENKOU2-SIKEN.COM
   Registry Domain ID: 2741096876_DOMAIN_COM-VRSN
   Registrar WHOIS Server:
   Registrar URL: https://internet.gmo/
   Updated Date: 2025-10-28T01:42:30Z
   Creation Date: 2022-11-27T14:10:01Z
   Registry Expiry Date: 2026-11-27T14:10:01Z
   Registrar: GMO Internet Group, Inc. d/b/a Onamae.com
   Registrar IANA ID: 49
   Registrar Abuse Contact Email: 
   Registrar Abuse Contact Phone: +81.337709199
   Domain Status: ok https://icann.org/epp#ok
   Name Server: NS1.XSERVER.JP
   Name Server: NS2.XSERVER.JP
   Name Server: NS3.XSERVER.JP
   Name Server: NS4.XSERVER.JP
   Name Server: NS5.XSERVER.JP
   DNSSEC: unsigned
   URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2026-10-22T21:52:35Z