Validates CPF and test it with matchers in a simple way.

Validates CURP and test it with matchers in a simple way.

An advance email validator. Checks format, MX record existence for email domain, and SMTP address validation.

An ActiveModel validator utilizing the built in URI parse methods to provide a rich semantic API for URI validation

Validates Guatemala Identity Document and test it with matchers in a simple way.

Validates Host, Domain and IP and test it with matchers in a simple way.

Validates Several Identity Documents and test it with matchers in a simple way.

Validates Argentina DNI Document and test it with matchers in a simple way.

Validates Brazilian CNPJ Document and test it with matchers in a simple way.

Validates Brazilian CPF Document and test it with matchers in a simple way.

Validates Chile RUT Document and test it with matchers in a simple way.

Validates Colombia CC Document and test it with matchers in a simple way.

Validates Colombia NIT Document and test it with matchers in a simple way.

Validates Guatemala DPI Document and test it with matchers in a simple way.

Validates Mexico RFC Document and test it with matchers in a simple way.

Validates Panama RUC Document and test it with matchers in a simple way.

Validates Peru DNI Document and test it with matchers in a simple way.

Validates Peru RUC Document and test it with matchers in a simple way.

Validates IPv4 and IPv6 addresses

Validates uniqueness of has_many children