flets.com

https://flets.com· First analyzed 01 May 2026· Updated 01 May 2026

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flets.com

Mobile

Sponsored

Hosting Provider

Japan163

IP Address

163.137.234.147

Site Location

🇯🇵 Japanvia ip

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS17516

Organization

Japan163

Nameservers

ns-1943.awsdns-50.co.uk.ns-822.awsdns-38.net.ns-91.awsdns-11.com.ns-1075.awsdns-06.org.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.9 s10%

Speed Index

2.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

6.4 MB

200 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Japan163

Technology Stack

11 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

Advertising

Twitter Ads Microsoft Advertising Taboola

Libraries

UI Components

CSS Frameworks

Tag Managers

SEO Analysis

D53/100

Meta Tags7/15

Content7/12

Headings3/8

Technical13/21

E-E-A-T0/7

Images3/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile4/4

Indexability3/3

flets.comflets.com

【公式】NTT東日本|個人のお客さまトップ|個人のお客さま

NTT東日本の個人のお客さま向け公式サイトです。インターネット（フレッツ光/コラボ光）・電話・電報・通信機器などのサービスを、個人のお客さまに向けにご案内しています。

Title Length29 chars

Recommended: 50-60 chars (~175px / 580px)

Description Length83 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (41/59) — critical for accessibility and SEO

9 issues found

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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

F38/100

Bot Access

20/25

Machine Read.

5/25

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. listsnavheader/footer

Text ratio:3%

Words:198

Token eff.:Too Short

Sections/1K:35.4

Depth:3/5

Structured Data

No Schema

Citation Readiness

Opening Summary100w

Descriptive Headingsavg 1.1w

Canonical URL

Open Graph3/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

AI readiness recommendation preview...

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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.

61/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

5/15

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

9/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

4 recommendations

•Accessibility recommendation preview...

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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.

14/100

807 mg

CO₂e / view

6.4 MB

Page Weight

Cleaner Than

New Visitor

923 mg

Returning (cached)

461 mg

Annual (10K/mo)

96.9 kg

Emission Segments

Data Center

180 mg

Network

194 mg

Device

433 mg

Resource Breakdown

JavaScript

615.3 KB

Images

3.9 MB

CSS

1.9 MB

HTML

34.6 KB

Green Hosting Not Verified

Japan163

10 recommendations

•Carbon footprint recommendation preview...

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Security Score

20%Critical

No SSL

No WAF

N/A

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

connection

Keep-Alive

content-type

text/html

date

Fri, 01 May 2026 11:49:37 GMT

keep-alive

timeout=5, max=100

transfer-encoding

chunked

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

r01ims003.rabbit.groupis-ex.ntt

Domain Information

flets.com

Domain Age

25y 10m

Created

11.07.2000

Expires

11.07.2027

Last Updated

15.04.2026

Registrar

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

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

69/100

Mobile Friendly3 breakpoints

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

BIZ UDPGothic

WCAG AA

65/100

Readability

/30

22/30

16px · LH 1.60

Hierarchy

/20

7/20

WCAG

/25

20/25

4.54:1 min contrast

Performance

/25

16/25

1 font

Heading Font

BIZ UDPGothic

Sans

Body Font

BIZ UDPGothic

Sans16px

Contrast Ratio

4.54:1

WCAG AA (≥4.5:1)

Reading Comfort

Single Font Family

left aligned

32px

24px

16px

✅ 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 4.5:1).

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

⚠️ Fluid type without rem: clamp() detected but missing rem units. May fail WCAG 1.4.4 zoom test.

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

Buy on MyFontsFluid Type

Color Palette

8 unique colors

Light

#ffffff

Background· 64.4%

#c7f6bf

Primary· 7.1%

#ddf8d6

Accent· 6%

#316584

Secondary· 5.9%

#51b4a0

Secondary· 5.2%

#e4f0f4

Secondary· 4.9%

#7adc9b

Accent· 4.4%

#e0e2b1

Secondary· 2.1%

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

Microsoft ClarityFree

Google Tag ManagerFree

User behavior and product analytics

Advertising

Microsoft AdsEnterprise

TaboolaMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

29 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(5)s.yimg.jp(4)clarity.ms(2)scripts.clarity.ms(1)px.ladsp.com(1)

Website Identity

flets.com

25 years old

Location detected: 🇯🇵 Japanvia ip

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

Sponsored

Last analyzed: 01 May 2026 at 11:50

Historical Analysis & Change Tracking