Expired domain `iba.com.br` shows as registered by RDAP response

[adrukh]

iba.com.br registration has expired in July 2025.
Its WHOIS record says release process: waiting. However, rdapper returns "isRegistered": true.

Is this a bug? Should registered a while back, expired since, in release process now mean not registered?

I believe so, and would like to suggest the following changes:

1. RDAP parser: Replace hardcoded isRegistered: true with logic that checks:

• Presence of registration data (events, statuses, nameservers, dates)
• Status values for inactive/deleted states
• Expiration + lack of nameservers = likely released

2. WHOIS patterns: Add /\brelease process[:\s]*waiting\b/i to catch Brazilian .br domains
3. Validation strategy: When RDAP response is suspiciously minimal, validate against WHOIS