ondacero.es

Readiness by lane

Green: ondacero.es. Thin bar: Audio & Music Streaming peer median.

Priority fixes for ondacero.es

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

1. Priority 1 · Harden

   DMARC policy enforces quarantine or reject

   Observed: No DMARC record was found at _dmarc.ondacero.es.

   Why it matters: An enforcing DMARC policy helps receiving mail systems reject email that falsely claims to come from your domain, a common route for phishing your customers.

   What to do: Publish DMARC with p=none and a reporting address first, fix any legitimate senders that fail SPF or DKIM alignment, then move to quarantine and finally reject.

   38% of Audio & Music Streaming peers do this. Limit: Read from public DNS at the time of the check; records may have changed since.

   Guide: A Practical Website Health Check for Owners

2. Priority 2 · Harden

   Framing restricted

   Observed: The homepage did not send frame-ancestors or X-Frame-Options, so other sites may frame it.

   What to do: Send Content-Security-Policy: frame-ancestors 'self' (or a list of trusted origins). X-Frame-Options: SAMEORIGIN covers older browsers.

   42% of Audio & Music Streaming peers do this.

   Guide: A Practical Website Health Check for Owners

3. Priority 3 · Harden

   Certificate lifetime of 100 days or less

   Observed: The certificate from GlobalSign nv-sa had a 396-day validity period, longer than the 100-day maximum that applies from March 2027.

   What to do: Move to automated issuance and renewal now, while you still have time to test it.

   69% of Audio & Music Streaming peers do this.

   Guide: HTTPS and TLS Guide for Website Owners

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.

   43% of Audio & Music Streaming peers do this.

   Guide: A Practical Website Health Check for Owners

What ondacero.es already does well

Practices fewer than half of Audio & Music Streaming peers use.

• HTTP/3 advertisedHTTP/3 advertised.31% of peers
• HSTS kept for at least a yearHSTS with a 365-day max-age covering subdomains.33% of peers
• Modern image formats in useWebP or AVIF images detected.34% of peers

What we saw

Homepage checked

https://www.ondacero.es/

Homepage response

HTTP 200

TLS

TLSv1.3, HTTP/2

Certificate

GlobalSign, 396-day validity, expiring 2027-02-20

CDN or edge

Fastly

DNS operators

Amazon Route 53

HSTS

max-age 365 days, includeSubDomains, preload

Homepage HTML

537 KB, gzip

Images on homepage

150 (jpg 283, png 21, webp 10)

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 Audio & Music Streaming sites

• joysound.com74
• los40.com74
• radio.garden74
• radiofm.rs75
• storytel.com74

Audio & Music Streaming readiness benchmark