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castle.io

Castle – Stop bots and account abuse in minutes

Last scanned Jul 26, 2026, 5:17 AM

93

Overall score

Excellent

Summary

A complete suite of SDKs and APIs to monitor users, block bots, and stop in-app fraud. This website uses Google Analytics hosted on AWS behind Netlify CDN. SEO is excellent (100/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance good (80/100).

Castle

A complete suite of SDKs and APIs to monitor users, block bots, and stop in-app fraud.

United States
Hosted on AWS

Products & pricing

Product and pricing information published in this site's own structured data.

Choose your plan

$0 USD

Top issues to fix

2 issues found · 1 high priority

  • Missing Content-Security-Policy header

    Security

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

  • 4 broken links on the page

    SEO

    Fix or remove broken links — they waste crawl budget and erode user trust.

100

SEO

0 issue(s) found

80

Performance

89 ms

90

Security

HTTPS & header checks

100

Accessibility

0 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.

Castle

A complete suite of SDKs and APIs to monitor users, block bots, and stop in-app fraud.

X (Twitter)LinkedIn

Contact

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

Meta tags

Title
Castle – Stop bots and account abuse in minutes
Description
A complete suite of SDKs and APIs to monitor users, block bots, and stop in-app fraud.
Canonical
https://castle.io/
Language
en
Charset
UTF-8
Viewport
width=device-width
Robots meta
index, follow
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Castle – Stop bots and account abuse in minutes
og:description
A complete suite of SDKs and APIs to monitor users, block bots, and stop in-app fraud.
og:type
website
og:url
https://castle.io/

Twitter Card

twitter:card
summary_large_image
twitter:title
Castle – Stop bots and account abuse in minutes
twitter:description
A complete suite of SDKs and APIs to monitor users, block bots, and stop in-app fraud.

Technologies

Detected frameworks, languages, and tools.

AstroGoogle Analytics

Hosting & CDN

Hosting provider
AWS
CDN provider
Netlify
IP address
75.2.60.5
ASN
AS16509 (AMAZON-02 - Amazon.com, Inc., US)

DNS records

TypeValue
A
  • 75.2.60.5
AAAA—
MX
  • alt2.aspmx.l.google.com
  • aspmx.l.google.com
  • aspmx2.googlemail.com
  • alt1.aspmx.l.google.com
  • aspmx3.googlemail.com
TXT—
NS
  • ns-1818.awsdns-35.co.uk
  • ns-712.awsdns-25.net
  • ns-1523.awsdns-62.org
  • ns-77.awsdns-09.com
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
castle.io
Valid from
Jul 23, 2026
Valid to
Oct 21, 2026
Days until expiry
86
SAN domains
castle.io, www.castle.io

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyMissing
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyEnabled
  • Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 15 · H3 37

Links

18 internal · 17 external · 4 broken

Images

0 total · 0 missing alt

Scripts / Styles

14 scripts · 1 stylesheets

JS / CSS size

25.0 KB · 192 KB

Page size

1.0 MB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
0
sitemap.xml
Found
URLs in sitemap
-1

SEO issues

No SEO issues detected.

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://castle.io
Final URL
https://castle.io
HTTP status
200
HTTP version
HTTP/2
Response time
68 ms
HTML size
1.0 MB
Redirect chain
https://castle.io

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Frequently asked questions

What technology does castle.io use?
castle.io is built with Astro, Google Analytics.
Is castle.io secure (HTTPS)?
Yes. castle.io uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 21, 2026.
Who hosts castle.io?
castle.io is hosted on AWS, behind Netlify CDN.
What is castle.io's SEO score?
castle.io scored 100/100 for SEO in the latest analysis (excellent).
What is castle.io's overall website score?
castle.io has an overall SiteGraph score of 93/100, combining SEO, performance, security, and accessibility.
What company operates castle.io?
castle.io is operated by Castle. A complete suite of SDKs and APIs to monitor users, block bots, and stop in-app fraud.
What products does castle.io offer?
castle.io offers Choose your plan.