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iij.ad.jp

https://iij.ad.jp· First analyzed 28 Apr 2026· Updated 28 Apr 2026
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iij.ad.jp
Desktop screenshot of iij.ad.jp
Mobile screenshot of iij.ad.jp
Mobile

Sponsored

Hosting Provider

IIJ Internet

IP Address

202.232.2.191

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS2497

Organization

IIJ Internet

Server

Apache

Nameservers

dns0.iij.ad.jp.dns1.iij.ad.jp.

Performance

76

Core Web Vitals

Weight

First Contentful Paint
2.9 s10%
Speed Index
3.8 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
7.2 MB
134 requests

Image Optimization

Lazy LoadWebP
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
IIJ Internet

Technology Stack

6 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Libraries

1
jQuery

UI Components

1
Slick Carousel

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Apache

SEO Analysis

C63/100
18
5
2
Meta Tags9/15
Content11/12
Headings3/8
Technical15/21
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social3/5
Freshness2/4
Mobile4/4
Indexability3/3
I
iij.ad.jpiij.ad.jp

トップ | インターネットイニシアティブ（IIJ）

株式会社インターネットイニシアティブ（IIJ）のオフィシャルサイト。IIJはクラウドサービスからインターネット接続サービス、セキュリティサービス、アウトソーシングサービス、システムインテグレーションに至るまで、総合的なソリューションサービスを提供しています。

Title Length25 chars

Recommended: 50-60 chars (~148px / 580px)

Description Length129 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (92/141) — critical for accessibility and SEO

7 issues found

Upgrade to view details

Local SEO

Local Search Readiness

6/100
Poor
2 13 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

D43/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
Citation
13/25

AI Bot Access

14/14 accessible
AI Search
OAI-SearchBot
PerplexityBot
Claude-SearchBot
Gemini-Deep-Research
DuckAssistBot
Training
GPTBot
ClaudeBot
Google-Extended
Meta-ExternalAgent
Bytespiderinfo
Amazonbot
Applebot-Extended
CCBotinfo
Fetch
ChatGPT-User

Machine Readability

llms.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
def. listsnav
Text ratio:7%
Words:929
Token eff.:Optimal
Sections/1K:37.7
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headingsavg 1.5w
Canonical URL
Open Graph3/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
AI readiness recommendation preview...
Upgrade to view recommendations

Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
C
69/100
10
Passed
3
Critical
3
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
13/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
10/15
Verifies form fields have labels, error messages are clear, and inputs are properly associated.
Color & Contrast
15/15
Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
Keyboard & Focus
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
2/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
4 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
21/100
F
908 mg
CO₂e / view
7.2 MB
Page Weight
5%
Cleaner Than
New Visitor
1.04 g
vs
Returning (cached)
519 mg
Annual (10K/mo)
109.0 kg
Emission Segments
Data Center
203 mg
Network
218 mg
Device
488 mg
Resource Breakdown
JavaScript
81.9 KB
Images
3.3 MB
CSS
3.8 MB
HTML
9.2 KB
Other
15.9 KB
Green Hosting Not Verified
IIJ Internet
8 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

56%Poor
Interactive

HTTPS

No WAF

306d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Cybertrust Japan Co., Ltd.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

04.02.2026

Valid Until

28.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.iij.ad.jpiij.ad.jp

SHA-256 Fingerprint

88:78:49:49:5C:91:EC:F2:1D:FA:17:12:BA:3B:34:DB:6D:B3:B8:6C...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges
bytes
connection
Keep-Alive
content-encoding
📦 Gzip(gzip)
content-length
9120
content-type
text/html
date
Tue, 28 Apr 2026 01:39:34 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

75

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

omgi.iij.ad.jp

Domain Information

iij.ad.jp

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
Privacy policy page linked

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
D
53/100
Mobile Friendly1 breakpoint
Viewport Meta
The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
Responsive Design
Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
Touch Icons
Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
Readable Font Size
Base font size should be at least 16px on mobile to ensure text is readable without zooming.
Relative Units
Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
No H-Scroll Risk
No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
Tap Targets OK
Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
No Fixed Widths
No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
Viewport
width=device-width,initial-scale=1
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Noto Sans Japanese

WCAG AA
59/100
Readability
/30
21/30

16px · LH 1.60

Hierarchy
/20
8/20
WCAG
/25
15/25

4.59:1 min contrast

Performance
/25
15/25

1 font · 2 req

Heading Font

Noto Sans Japanese

Sans

Body Font

Noto Sans Japanese

Sans16px

Contrast Ratio

4.59:1

WCAG AA (≥4.5:1)

Reading Comfort

~35 CPL

Narrow lines
48px
h2
28px
h3
16px
p

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.6:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFontsFlesch 52

Color Palette

9 unique colors
4.81:1 AA Light
#ffffff
Background· 45.39999999999999%
#627675
Secondary· 4.8%
#1b101c
Primary· 7.6%
#754833
Secondary· 6.7%
#2c3750
Secondary· 6.5%
#aa8a5f
Secondary· 5.4%
#902128
Accent· 5.1%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

Sponsored

Scripts & Styles

26 Resources

20
Scripts
6
Styles
4
Async
0
Defer

Top Script Sources

local(14)cdn01.stright.bizris.com(2)pixel.byspotify.com(1)cs.nakanohito.jp(1)google-analytics.com(1)

Website Identity

iij.ad.jp

Location detected: 🇯🇵 Japanvia tld
ja

Sponsored

Last analyzed: 28 Apr 2026 at 01:40

Historical Analysis & Change Tracking