What powers isef.jp?

Last seen Aug 2026 · 21 technologies across 15 categories

Advertising

Google AdSense
since Oct 2022
Twitter Ads
since Oct 2022

CDN

Cloudflare
since Oct 2022

CMS

WordPress
since Oct 2022

Databases

MySQL
since Oct 2022

Font scripts

Twitter Emoji (Twemoji)
since Oct 2022

JavaScript libraries

core-js v2.6.5
since Jun 2023
jQuery v3.7.1
since Oct 2022
jQuery Migrate v3.4.1
since Oct 2022

Miscellaneous

RSS
since Dec 2022

PaaS

WordPress.com
since Jan 2026

Page builders

Colibri WP
since Jun 2023
WordPress Block Editor
since Jun 2025

Performance

Priority Hints
since Feb 2024

Programming languages

PHP
since Oct 2022

Security

Cloudflare Bot Management
since Jun 2025
HSTS
since Jan 2026
reCAPTCHA
since Oct 2022

Web servers

Nginx
since Jun 2023

Widgets

Twitter
since Oct 2022

WordPress plugins

AI Crawlers

Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.

  • robots.txt found
  • llms.txt not found
  • ai.txt not found

See who blocks each AI crawler across the web

AI Crawlers

No AI crawlers blocked

Full breakdown

Audience

  • Japan

Where the site's Chrome visitors come from, largest estimated audience first.

Open Page Rank

3.07 / 10 · ranked #1,475,351 of all domains

18 referring domains · OpenPageRank

Core Web Vitals

LCP1.1 s
INP50 ms
CLS0
TTFB500 ms

Real user p75, Chrome UX Report, Aug 2026.

Page

  • Language: Japanese
  • Weight: 1.2 MB · 60 requests
  • WordPress theme: brite · all themes

Homepage as crawled by the HTTP Archive, Sep 2026.

Infrastructure

DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted

Full technology history →
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