What powers iknow.jp?

Last seen Oct 2026 · 24 technologies across 15 categories

Analytics

Google Analytics
since Jun 2018

CDN

Cloudflare
since Oct 2018
Unpkg
since Apr 2024

Documentation

Zendesk
since Apr 2020

Email

Amazon SES
since Aug 2022
Google Workspace
since Aug 2022
Sendgrid
since Aug 2022

Font scripts

Typekit v1.21.0
since Jun 2018

JavaScript libraries

core-js v3.6.2
since Sep 2021
jQuery v1.10.2
since May 2017
jQuery Migrate
since May 2017
jQuery UI v1.10.3
since Jun 2018
Moment.js v2.4.0
since Aug 2018
web-vitals v4
since Apr 2024

Miscellaneous

Open Graph
since Sep 2022

PaaS

Amazon Web Services
since Aug 2022

Programming languages

Ruby
since Jun 2018

Reverse proxies

Envoy
since Nov 2021

Security

Cloudflare Bot Management
since Dec 2021
HSTS
since Sep 2022

Tag managers

Google Tag Manager
since May 2017

Web frameworks

Ruby on Rails
since Jun 2018

Web servers

Nginx v1.14.2
since May 2017

Widgets

Facebook
since Jun 2018

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 Nov 2026.

  • robots.txt found
  • llms.txt not found
  • ai.txt not found
  • Sep 2026 applebot removed from robots.txt
  • Sep 2026 applebot added to robots.txt

See who blocks each AI crawler across the web

Top search keywords

KeywordPositionEst. monthly visits
j p words #4 1,200
j p words #4 1,200
japanese vocabulary #3 160
japanese vocab #5 75
learn japanese vocabulary #1 52
vocab in japanese #2 34
japanese words #24 29
1000 most common japanese words #3 25
basic japanese words and phrases #15 22
most common words in japanese #6 15
japanese basic vocab #10 10
word in japanese language #6 9
all japanese word #4 9
japanese all words #4 9
japanese vocabulary words #3 7
written japanese words #4 6
common japanese sentences #27 6
vocabulary words japanese #3 5
most used japanese words #5 4
basic japanese #36 3
top 1000 japanese words #3 3
most commonly used japanese words #6 3
japanese words chart #3 3
japanese words a to z #8 3
hiragana words #14 3

The site's top keywords in Google (US), with the visits each one is estimated to bring per month.

Top backlinks

Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.

AI Crawlers

No AI crawlers blocked

Full breakdown

Audience

  • 94% desktop
  • 6% phone
  • Japan
  • United States

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

Open Page Rank

5.87 / 10 · ranked #119,975 of all domains

108 referring domains · OpenPageRank

Search traffic

2,900 est. monthly organic visits (US)

258 keywords in Google's top 30

Core Web Vitals

LCP1.5 s
INP50 ms
CLS0
TTFB300 ms

Real user p75, Chrome UX Report, Sep 2026.

Page

  • Language: English
  • Weight: 1.3 MB · 39 requests
  • Structured data: OpenGraph

Homepage as crawled by the HTTP Archive, Oct 2026.

Infrastructure

  • Hosted on Amazon Web Services (18.180.252.78)
  • Email: no MX record returned
  • Email security: SPF (soft fail)
  • SSL: Let's Encrypt, RSA 2048, expires Jan 2027
  • Common Crawl link graph: rank 69,521, 10 hosts
  • Verified with: Google

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

Subdomains

HostTechs
iknow.jp 16
support.iknow.jp 11
www.iknow.jp 9

Full technology history →
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