Skip to main content
SGSiteGraph

radiko.jp

radiko

Last scanned Jul 26, 2026, 5:17 AM · 2 views

78

Overall score

Fair

Summary

radiko(ラジコ)はスマートフォンやアプリ・パソコンでラジオが聴ける無料のサービスです。1週間以内に放送された番組が聴けるタイムフリー聴取機能や、全国のラ�… This website uses Nginx hosted on MCNET - NTT SmartConnect Corporation, JP. SEO is fair (65/100) and accessibility is good (75/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.

radiko(ラジコ)はスマートフォンやアプリ・パソコンでラジオが聴ける無料のサービスです。1週間以内に放送された番組が聴けるタイムフリー聴取機能や、全国のラジオが聴き放題のラジコプレミアムも！AM・FMラジオ対応

Japan
Hosted on MCNET - NTT SmartConnect Corporation, JP

Top issues to fix

10 issues found · 3 high priority

  • Missing Strict-Transport-Security header

    Security

    Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • No H1 heading found

    SEO

    Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.

  • Missing X-Content-Type-Options header

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • Meta description longer than 160 characters

    SEO

    Trim the meta description to under 160 characters to avoid truncation in search results.

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

+4 more issues — details in the sections below.

65

SEO

5 issue(s) found

100

Performance

292 ms

75

Security

HTTPS & header checks

75

Accessibility

2 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

radiko(ラジコ)はスマートフォンやアプリ・パソコンでラジオが聴ける無料のサービスです。1週間以内に放送された番組が聴けるタイムフリー聴取機能や、全国のラジオが聴き放題のラジコプレミアムも！AM・FMラジオ対応

X (Twitter)X (Twitter)InstagramFacebookYouTube

Contact

Email, phone, and address published on this site's own pages.

Source: https://radiko.jp/contact

Meta tags

Title
radiko
Description
radiko(ラジコ)はスマートフォンやアプリ・パソコンでラジオが聴ける無料のサービスです。1週間以内に放送された番組が聴けるタイムフリー聴取機能や、全国のラジオが聴き放題のラジコプレミアムも！AM・FMラジオ対応
Canonical
Language
ja
Charset
UTF-8
Viewport
width=device-width,initial-scale=1.0
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
radiko
og:description
PC・スマートフォンでラジオが聴けるradiko　一人の時間をもっと快適に楽しく！今日からあなたもradikoで音のある生活、はじめよう！
og:type
website
og:url
https://radiko.jp/

Twitter Card

twitter:card
summary_large_image
twitter:title
radiko
twitter:description
radikoは、パソコンがそのままラジオ受信機となる「IP(Internet Protocol)サイマルラジオ」の配信サービスです

Technologies

Detected frameworks, languages, and tools.

jQueryMeta PixelNginx

Hosting & CDN

CDN provider
—
IP address
203.211.199.120
ASN
AS7671 (MCNET - NTT SmartConnect Corporation, JP)

DNS records

TypeValue
A
  • 203.211.199.120
AAAA—
MX
  • alt1.aspmx.l.google.com
  • alt3.aspmx.l.google.com
  • aspmx.l.google.com
  • alt4.aspmx.l.google.com
  • alt2.aspmx.l.google.com
TXT—
NS
  • quincy.ns.cloudflare.com
  • lovisa.ns.cloudflare.com
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.2
Issuer
Sectigo Limited
Subject
radiko.jp
Valid from
May 25, 2026
Valid to
Dec 9, 2026
Days until expiry
136
SAN domains
radiko.jp, www.radiko.jp

Security headers

  • Strict-Transport-SecurityMissing
  • Content-Security-PolicyMissing
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsMissing
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 7 · H3 0

Links

179 internal · 15 external · 1 broken

Images

14 total · 3 missing alt

Scripts / Styles

89 scripts · 10 stylesheets

JS / CSS size

956 KB · 208 KB

Page size

15.3 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
13
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Meta description longer than 160 characters
  • Missing canonical link
  • No H1 heading found
  • No structured data (JSON-LD) found
  • sitemap.xml not found

Accessibility issues

  • More than 20% of images are missing alt text
  • No H1 heading found

Scan details

Requested URL
https://radiko.jp
Final URL
https://radiko.jp
HTTP status
200
HTTP version
HTTP/1.1
Response time
292 ms
HTML size
15.3 KB
Redirect chain
https://radiko.jp

See something wrong on this report? Request a correction

Related websites

Same technology stack

fing.com

Network Scanner & Monitoring Tool for Home and Office | Fing

99
wordpressnginxgoogle-analytics
AWS

fing.io

Network Scanner & Monitoring Tool for Home and Office | Fing

99
wordpressnginxgoogle-analytics
AWS

wellnessliving.com

All-In-One Business Software Solution - WellnessLiving

98
wordpressnginxmeta-pixel
INCAPSULA - Incapsula Inc, US

goeshow.com

eShow | Event Management Technology

98
wordpressnginxgoogle-analytics
DATABANK-LATISYS - Latisys-Chicago, LLC, US

domaine.fr

Domaine.fr : enregistrement noms de domaine .fr .com .net

98
nginxgoogle-analyticsmeta-pixel
AWS

directnic.com

Directnic.com-Get a FREE Domain with any annual Hosting Plan

97
nginxgoogle-analyticsmeta-pixel
TP - The Producers, Inc., US

Frequently asked questions

What technology does radiko.jp use?
radiko.jp is built with jQuery, Meta Pixel, Nginx.
Is radiko.jp secure (HTTPS)?
Yes. radiko.jp uses TLS 1.2 with a certificate issued by Sectigo Limited, valid until Dec 9, 2026.
Who hosts radiko.jp?
radiko.jp is hosted on MCNET - NTT SmartConnect Corporation, JP.
What is radiko.jp's SEO score?
radiko.jp scored 65/100 for SEO in the latest analysis (fair).
What is radiko.jp's overall website score?
radiko.jp has an overall SiteGraph score of 78/100, combining SEO, performance, security, and accessibility.