Domain Registrars: website readiness

Readiness by lane

Biggest gaps for Domain Registrars sites

The checks with the most room to improve, weighted by impact.

1. HSTS kept for at least a year

   43% observed · all sites 34%

   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.

   Guide: HTTPS and TLS Guide for Website Owners

2. DMARC policy enforces quarantine or reject

   36% observed · all sites 39%

   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.

   Guide: A Practical Website Health Check for Owners

3. HTTP/3 advertised

   14% observed · all sites 37%

   Turn on HTTP/3 at your CDN. Browsers fall back to HTTP/2 automatically, so the risk is low.

   Guide: CDN Guide for Website Owners

4. security.txt published

   14% observed · all sites 7.1%

   Publish /.well-known/security.txt with at least Contact and Expires fields, as RFC 9116 requires, and review it before it expires.

   Guide: A Practical Website Health Check for Owners

5. CAA records limit who can issue certificates

   21% observed · all sites 13%

   Publish CAA records naming every CA you actually use, including the CAs your CDN uses for managed certificates. Add an iodef contact if you want reports.

   Guide: HTTPS and TLS Guide for Website Owners

6. Content Security Policy present

   29% observed · all sites 32%

   Start with Content-Security-Policy-Report-Only to see what would break, tighten the policy over a few weeks, then enforce it.

   Guide: Payment Security and PCI DSS: What Website Owners Need to Know

Stack mix

Readiness leaders

Domain Registrars sites in the top 50K with the highest share of observed practices (at least 26 of 31 checks measured). This lists only what we observed on 23 October 2026; owners can request a correction.

1. atom.com84/100
2. porkbun.com81/100
3. gsfar.com64/100
4. onlinebersama.com64/100
5. whois.com62/100

All 31 checks for Domain Registrars

Domain Registrars profiles

Readiness index shown next to each site.

• atom.com84
• gsfar.com64
• onlinebersama.com64
• porkbun.com81
• whois.com62