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castbox.fm

https://castbox.fm· First analyzed 13 Feb 2026· Updated 13 Feb 2026
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castbox.fm
Desktop screenshot of castbox.fm
Mobile screenshot of castbox.fm
Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

54.168.255.27

Server Location

🇯🇵 Tokyo, Japan

ASN

AS16509

Organization

AWS EC2 (ap-northeast-1)

Server

Nginx

Nameservers

ns-1323.awsdns-37.org.ns-1860.awsdns-40.co.uk.ns-989.awsdns-59.net.ns-101.awsdns-12.com.

Performance

Page Speed

873 KB
35 requests

Image Optimization

imgix
0–49
50–89
90–100

Architecture Stack

Headless
⚙️ SSR
Decoupled
API
Data Source
Headless CMS
Strapi
Infrastructure
Hosting
Amazon Web Services (AWS)
CDN
Imgix

Progressive Web App

Web ManifestTheme Color

Detected API Sources

/api/pwa/app.js

Technology Stack

5 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Meta Frameworks

1
Astro

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Nginx

SEO Analysis

A84/100
12
2
0
C
castbox.fmcastbox.fm

Best free podcast app for Apple iOS and Android | Let words move you

Millions of podcasts for all topics. Listen to the best free podcast on Android, Apple iOS, Amazon Alexa, Google Home, Carplay, Android Auto, PC. Create...

Title Length68 chars

Recommended: 50-60 chars

Description Length155 chars

Recommended: 120-160 chars

Issues (0)

    2 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    104 URLs

    robots.txt

    24 rules

    Sponsored

    Sponsored

    F

    Security Score

    31%Critical
    Interactive

    HTTPS

    No WAF

    133d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Amazon

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.2

    HTTP Protocol

    HTTP/2

    Valid From

    30.05.2025

    Valid Until

    26.06.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    *.castbox.fmcastbox.fm

    SHA-256 Fingerprint

    5F:8C:AD:EF:59:EB:CB:83:80:03:EB:77:26:C5:37:D9:89:05:1A:B2...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-origin
    *
    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html; charset=utf-8
    date
    Fri, 13 Feb 2026 14:55:21 GMT
    server
    nginx
    vary
    Accept-Encoding
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    95

    SPF
    DKIM
    DMARC

    DMARC Policy

    Reject (Strictest)

    MX Records (5)

    alt1.aspmx.l.google.com
    alt2.aspmx.l.google.com
    alt3.aspmx.l.google.com
    alt4.aspmx.l.google.com

    +1 more

    Domain Information

    castbox.fm

    Domain Age
    10y 1m

    Created

    14.01.2016

    Expires

    14.01.2027

    Last Updated

    20.11.2025

    Registrar

    Instra Corporation Pty Ltd

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Privacy policy page linked
    Data Protection Officer mentioned

    Typography & Readability

    Lato

    62/100
    Readability
    /30
    32/40

    18px · LH 1.33

    Hierarchy
    /20
    18/25

    2x ratio

    WCAG
    /25
    5/15

    Contrast: undefined

    Performance
    /25
    20/20

    System fonts

    Heading Font

    Lato

    Sans36px

    Body Font

    Lato

    Sans18px

    Contrast Ratio

    --

    Reading Comfort

    Single Font Family

    left aligned
    36px
    h1
    14px
    h2
    16px
    h3
    14px
    h4
    18px
    p

    ✅ Excellent readability: 18px body text is ideal for all devices.

    ✅ Strong hierarchy: Headlines are 2.0x larger than body text.

    ✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

    ✅ Consistent design: Single font family with weight variations is a modern best practice.

    ⚠️ Risky: Text appears on background images without overlay protection.

    ✅ Clean layout: Consistent left alignment throughout.

    Buy on MyFonts

    Business & Marketing Stack

    2 Tools Detected

    Growing

    Behavior Analytics

    2
    Google AnalyticsFree
    Google Tag ManagerFree

    User behavior and product analytics

    1

    Categories

    2

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    13 Resources

    11
    Scripts
    2
    Styles
    11
    Async
    0
    Defer

    Top Script Sources

    s3.castbox.fm(9)local(1)googletagmanager.com(1)

    Website Identity

    castbox.fm

    10 years old
    Instra Corporation Pty Ltd📧 Google Workspace

    Sponsored

    Last analyzed: 13 Feb 2026 at 14:55

    Historical Analysis & Change Tracking