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flets.com

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

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Hosting Provider

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

84

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

SEO Analysis

D53/100
14
7
2
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
F
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

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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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
61/100
10
Passed
4
Critical
1
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...

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
F
807 mg
CO₂e / view
6.4 MB
Page Weight
5%
Cleaner Than
New Visitor
923 mg
vs
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...
F

Security Score

20%Critical

No SSL

No WAF

N/A

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

70

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
Privacy Policy
Terms of Service

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.
C
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...

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
h2
24px
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 4.5:1).

❌ 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

3

User behavior and product analytics

Advertising

2

Ad platforms and retargeting pixels

2

Categories

5

Total Tools

1

Enterprise

1

Mid-Market

Assessment: Sophisticated marketing and sales technology infrastructure

Ad Networks

Amazon Publisher Services

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Scripts & Styles

29 Resources

20
Scripts
9
Styles
20
Async
0
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