Regex Tester & Validator

This regex matches a Krist domain name or address ending with a .kst top-level domain. It optionally captures a user or wallet identifier (up to 32 alphanumeric characters, hyphens, or underscores) before an '@' symbol. The main domain name part must be between 1 and 64 alphanumeric characters. It is designed to be case-insensitive.