¿Cómo validar un RFC de México y su digito verificador? Pregunta: ¿Cómo puedo verificar que el formato de un RFC mexicano sea válido? ¿Qué es el RFC? El Registro Federal de Contribuyentes (RFC) es una clave única que requiere toda persona física o mora
standards - What are RFCs? - Stack Overflow 4 Wikipedia gives a good description of what [RFC] is about but in a nutshell it is a set of recommendation from the Internet Engineering Task Force applicable to the working of the Internet and Internet-connected systems They are used as the standards
http - What is valid RFC1123 date format - Stack Overflow So if the software reading your header requires it to be in RFC 1123 format, then yes, Fri, 01 Mar 2019 15:00:00 +0530 is a completely valid date-time However, it is not a valid HTTP 1 1 date-time value!
smtp - Are email addresses case sensitive? - Stack Overflow From RFC 5321: Simple Mail Transfer Protocol, section 2 3 11: The standard mailbox naming convention is defined to be "local-part@domain"; contemporary usage permits a much broader set of applications than simple "user names" Consequently, and due to a long history of problems when intermediate hosts have attempted to optimize transport by modifying them, the local-part MUST be interpreted
What is the maximum length of a valid email address? Aside from RFC 3696, the maximum length of the Path element is also specified in RFC 5321, specifically in the Section 4 5 3 1 3: The maximum total length of a reverse-path or forward-path is 256 characters NOTE: the below section was left by the original author of this answer People should be aware of the errata against RFC 3696 in particular
How to generate a UUID compliant with RFC4122? - Stack Overflow I am trying to create a UUID that follows the RFC4122 requirements The documentation for UUID v5 states: uuid uuid5(namespace, name) Generate a UUID based on the SHA-1 hash of a namespace identif
Custom HTTP headers : naming conventions - Stack Overflow The RFC's exception accounts for potential conflicts between a future standard header and a header from another vendor whose technology may become integrated with yours through company merger, etc That's why the exception calls for a vendor prefix
Is 418 Im a teapot really an HTTP response code? The RFC specifies this code should be returned by teapots requested to brew coffee This HTTP status is used as an Easter egg in some websites, including Google com