List supported countries x402 REST usage
List every ISO 3166-1 alpha-2 country code for which a postal-code pattern is available.
postal.openverbs.com · 4 listed services · provider site
List every ISO 3166-1 alpha-2 country code for which a postal-code pattern is available.
Return the validation regular expression (source and flags) used for a country's postal codes.
Normalise a postal code's casing and whitespace (uppercase, collapse runs of spaces) and report whether the normalised form is valid for the country.
Check whether a postal / ZIP code is well-formed for a country (ISO 3166-1 alpha-2). A malformed code is a successful result with `valid:false`, not an error — only an unsupported country or empty code is a 400.
Provider identity is derived from the domain or repository in the source record. If two vendors share a host, they appear together here — that is a limitation of the data, not a statement about ownership.