odido.nl

Readiness by lane

Green: odido.nl. Thin bar: Telecommunications & Internet peer median.

Priority fixes for odido.nl

Ordered by impact and by how common each practice is among peers.

1. Priority 1 · Harden

   HSTS kept for at least a year

   Observed: The homepage response did not include a Strict-Transport-Security header.

   Why it matters: HSTS tells browsers to use HTTPS for your host on every later visit, which removes the window where a first HTTP request can be intercepted.

   What to do: Send Strict-Transport-Security on HTTPS responses. Start with a short max-age (for example 300 seconds), confirm every subdomain works over HTTPS, then raise it in steps to 31536000. Add includeSubDomains only when all subdomains are HTTPS. HSTS preload is optional and hard to undo; hstspreload.org itself does not recommend it by default.

   On Cloudflare: Enable HSTS under SSL/TLS > Edge Certificates > HTTP Strict Transport Security and raise max-age gradually.

   54% of Telecommunications & Internet peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.

   Guide: HTTPS and TLS Guide for Website Owners

2. Priority 2 · Accelerate

   Static files cached for 30 days or more

   Observed: A same-site stylesheet or script was cacheable for no max-age, short of the 30-day benchmark.

   What to do: Give versioned (fingerprinted) CSS, JavaScript, fonts and images Cache-Control: public, max-age=31536000, immutable, and change the file name whenever the content changes.

   On Cloudflare: Use Cache Rules to set edge and browser TTLs for static file paths.

   41% of Telecommunications & Internet peers do this.

   Guide: Browser Caching Guide for Website Owners

3. Priority 3 · Accelerate

   No render-blocking scripts in <head>

   Observed: The homepage <head> loaded 1 external script without async or defer.

   What to do: Add defer to scripts that need the DOM, async to independent ones such as analytics, or move them to the end of the body.

   37% of Telecommunications & Internet peers do this.

   Guide: Control Third-Party Scripts Before They Control Your Page

4. Priority 4 · Harden

   X-Content-Type-Options: nosniff

   Observed: The homepage response did not include X-Content-Type-Options: nosniff.

   What to do: Send X-Content-Type-Options: nosniff on all responses and make sure each file is served with the correct Content-Type.

   On Cloudflare: Add the header with a response header transform rule.

   64% of Telecommunications & Internet peers do this.

   Guide: A Practical Website Health Check for Owners

What odido.nl already does well

Practices fewer than half of Telecommunications & Internet peers use.

• DNSSEC signedDNSSEC delegation (DS record) present.13% of peers
• security.txt publishedsecurity.txt with a contact found.13% of peers
• Content Security Policy presentContent-Security-Policy present.48% of peers

What we saw

Homepage checked

https://www.odido.nl/

Homepage response

HTTP 200

TLS

TLSv1.3, HTTP/2

Certificate

DigiCert, 198-day validity, expiring 2027-02-05

CDN or edge

Cloudflare

DNS operators

Cloudflare

DMARC policy

p=reject

Homepage HTML

223 KB, gzip

Images on homepage

24 (webp 9, svg 6)

Limits: homepage only, one location, one moment. Header checks reflect the homepage response; other pages may differ.

Stack and providers

Seen in the homepage response, certificate and DNS. Provider pages compare how their customers configure the same checks.

All 31 checks

Select a gap for the method and fix. How each check works

Compare with other Telecommunications & Internet sites

• airtelkenya.com70
• ee.co.uk70
• klarmobil.de70
• simyo.es70
• singtel.com70

Telecommunications & Internet readiness benchmark