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iop.org

Attention Required! | Cloudflare

Last scanned Jul 18, 2026, 8:49 PM

90

Overall score

Excellent

Top issues to fix

6 issues found · 1 high priority

  • Missing meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • Missing canonical link

    SEO

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

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

  • Missing OpenGraph tags

    SEO

    Add og:title/og:description/og:image so shared links render a proper preview card.

  • sitemap.xml not found

    SEO

    Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

  • 1 broken link on the page

    SEO

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

Summary

This website uses Cloudflare Analytics hosted on Cloudflare behind Cloudflare CDN. SEO is fair (65/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: Missing meta description.

65

SEO

5 issue(s) found

100

Performance

199 ms

100

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.

Meta tags

Title
Attention Required! | Cloudflare
Description
Canonical
Language
en-US
Charset
UTF-8
Viewport
width=device-width,initial-scale=1
Robots meta
noindex, nofollow
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

Cloudflare Analytics

Hosting & CDN

Hosting provider
Cloudflare
CDN provider
Cloudflare
IP address
104.20.18.87
ASN
AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)

DNS records

TypeValue
A
  • 104.20.18.87
  • 172.66.146.73
AAAA
  • 2606:4700:10::ac42:9249
  • 2606:4700:10::6814:1257
MX—
TXT—
NS—
CAA—
CNAME
  • www.iop.org.cdn.cloudflare.net
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Google Trust Services
Subject
www.iop.org
Valid from
May 28, 2026
Valid to
Aug 26, 2026
Days until expiry
38
SAN domains
www.iop.org

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 3 · H3 0

Links

1 internal · 1 external · 1 broken

Images

0 total · 0 missing alt

Scripts / Styles

5 scripts · 1 stylesheets

JS / CSS size

32.4 KB · 24 B

Page size

5.3 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
43
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Missing meta description
  • Missing canonical link
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://iop.org
Final URL
https://www.iop.org/
HTTP status
403
HTTP version
HTTP/2
Response time
199 ms
HTML size
5.3 KB
Redirect chain
https://iop.org → https://www.iop.org/

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Frequently asked questions

What technology does iop.org use?
iop.org is built with Cloudflare Analytics.
Is iop.org secure (HTTPS)?
Yes. iop.org uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Aug 26, 2026.
Who hosts iop.org?
iop.org is hosted on Cloudflare, behind Cloudflare CDN.
What is iop.org's SEO score?
iop.org scored 65/100 for SEO in the latest analysis (fair).
What is iop.org's overall website score?
iop.org has an overall SiteGraph score of 90/100, combining SEO, performance, security, and accessibility.