Is iucr.org secure (HTTPS)?

Yes. iucr.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 13, 2026.

iucr.org is hosted on Wavenet-AS5413 - Wavenet Limited, GB.

What is iucr.org's SEO score?

iucr.org scored 60/100 for SEO in the latest analysis (fair).

What is iucr.org's overall website score?

iucr.org has an overall SiteGraph score of 66/100, combining SEO, performance, security, and accessibility.

iucr.org

421 Misdirected Request

Last scanned Jul 26, 2026, 5:18 AM · 1 view

Overall score

Fair

Summary

This website uses Nginx hosted on Wavenet-AS5413 - Wavenet Limited, GB. SEO is fair (60/100) and accessibility is good (85/100). Security scores poor (25/100) and performance excellent (100/100). Top issue: Missing meta description.

United Kingdom

Hosted on Wavenet-AS5413 - Wavenet Limited, GB

Top issues to fix

12 issues found · 4 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 meta description
SEO
Add a ~150-character meta description to control your search-result snippet and lift click-through rate.
Missing viewport meta tag
Accessibility
Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

+6 more issues — details in the sections below.

SEO

6 issue(s) found

100

Performance

856 ms

Security

HTTPS & header checks

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.

Technologies

Detected frameworks, languages, and tools.

Nginx

Hosting & CDN

Hosting provider: Wavenet-AS5413 - Wavenet Limited, GB
CDN provider: —
IP address: 192.70.242.28
ASN: AS5413 (Wavenet-AS5413 - Wavenet Limited, GB)

DNS records

Type	Value
A	192.70.242.28
AAAA	—
MX	mailserver.iucr.org
TXT	openai-domain-verification=dv-7aCKppamlqCGa2aoz0fwvVqW v=spf1 mx a:mailserver.iucr.org a:iucrasg.iucr.org a:genpurp1.iucr.org a:iucr.org ip4:192.70.242.0/24 ip4:192.248.146.155 -all google-site-verification=TwhzjhYYdB95CKRnhUzkAShXz7vD2hKm8t58bLHfXNE MS=ms61342343 google-site-verification=RctVcVbz-qWf_92Uizt8Rfs1K3WPveGtcgL1F3hpcB0
NS	dns1.iucr.org nickel.cix.co.uk dns0.iucr.org
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Let's Encrypt
Subject: www.iucr.org
Valid from: Jul 15, 2026
Valid to: Oct 13, 2026
Days until expiry: 76
SAN domains: asca.iucr.org, asca13.iucr.org, books.iucr.org, cif.iucr.org, cif2.iucr.org, cpd.iucr.org, crysac.iucr.org, highpressure.iucr.org, info.iucr.org, laaamp.iucr.org, laamp.iucr.org, newsletter.iucr.org, scanz.iucr.org, wdc.iucr.org, www.iucr.org

Security headers

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

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 0 · H3 0

Links

0 internal · 0 external · 0 broken

Images

0 total · 0 missing alt

Scripts / Styles

0 scripts · 0 stylesheets

JS / CSS size

0 B · 0 B

Page size

322 B

Robots.txt & Sitemap

robots.txt: Not found
Disallow rules: 0
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
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://iucr.org
Final URL: https://iucr.org
HTTP status: 421
HTTP version: HTTP/2
Response time: 856 ms
HTML size: 322 B
Redirect chain: https://iucr.org

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does iucr.org use?: iucr.org is built with Nginx.
Is iucr.org secure (HTTPS)?: Yes. iucr.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 13, 2026.
Who hosts iucr.org?: iucr.org is hosted on Wavenet-AS5413 - Wavenet Limited, GB.
What is iucr.org's SEO score?: iucr.org scored 60/100 for SEO in the latest analysis (fair).
What is iucr.org's overall website score?: iucr.org has an overall SiteGraph score of 66/100, combining SEO, performance, security, and accessibility.