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SGSiteGraph

sherpa.ac.uk

Jisc - Error 403

Last scanned Jul 26, 2026, 5:18 AM

80

Overall score

Great

Summary

Web page blocked error page. This website is hosted on Cloudflare. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores good (75/100) and performance good (80/100). Top issue: Missing canonical link.

Web page blocked error page

United States
Hosted on Cloudflare

Top issues to fix

8 issues found · 2 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.

  • Missing X-Content-Type-Options header

    Security

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

  • 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.

+2 more issues — details in the sections below.

70

SEO

5 issue(s) found

80

Performance

45 ms

75

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.

Web page blocked error page

Contact

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

Meta tags

Title
Jisc - Error 403
Description
Web page blocked error page
Canonical
Language
en-GB
Charset
UTF-8
Viewport
width=device-width
Robots meta
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.

No technologies detected.

Hosting & CDN

Hosting provider
Cloudflare
CDN provider
Cloudflare
IP address
104.18.30.127
ASN
AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)

DNS records

TypeValue
A
  • 104.18.30.127
  • 104.18.31.127
AAAA—
MX
  • sherpa-ac-uk.mail.protection.outlook.com
TXT
  • QuoVadis=d08bd3ed-22ed-4a05-b862-360d39cf6682
  • MS=ms30362276
  • v=spf1 -all
NS
  • ns-725.awsdns-26.net
  • ns-1225.awsdns-25.org
  • ns-1757.awsdns-27.co.uk
  • ns-362.awsdns-45.com
CAA
  • 0 issuewild "ssl.com"
  • 0 issuewild "amazontrust.com"
  • 0 issue "amazontrust.com"
  • 0 issuewild "letsencrypt.org"
  • 0 iodef "mailto:information.security@jisc.ac.uk"
  • 0 issue "letsencrypt.org"
  • 0 issue "ssl.com"
  • 0 issue "sectigo.com"
  • 0 issuewild "sectigo.com"
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
sherpa.ac.uk
Valid from
Jun 10, 2026
Valid to
Sep 8, 2026
Days until expiry
44
SAN domains
*.sherpa.ac.uk, sherpa.ac.uk

Security headers

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

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 1 · H2 1 · H3 0

Links

0 internal · 0 external · 0 broken

Images

4 total · 0 missing alt

Scripts / Styles

1 scripts · 0 stylesheets

JS / CSS size

921 B · 529 KB

Page size

637 KB

Robots.txt & Sitemap

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

SEO issues

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

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://sherpa.ac.uk
Final URL
https://sherpa.ac.uk
HTTP status
403
HTTP version
HTTP/2
Response time
32 ms
HTML size
637 KB
Redirect chain
https://sherpa.ac.uk

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does sherpa.ac.uk use?
We did not detect any specific technologies for sherpa.ac.uk in the latest scan.
Is sherpa.ac.uk secure (HTTPS)?
Yes. sherpa.ac.uk uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 8, 2026.
Who hosts sherpa.ac.uk?
sherpa.ac.uk is hosted on Cloudflare, behind Cloudflare CDN.
What is sherpa.ac.uk's SEO score?
sherpa.ac.uk scored 70/100 for SEO in the latest analysis (fair).
What is sherpa.ac.uk's overall website score?
sherpa.ac.uk has an overall SiteGraph score of 80/100, combining SEO, performance, security, and accessibility.