There are over 2500 RFC's. Each RFC is known by a number. For instance, RFC 1180 presents a tutorial on TCP/IP, RFC 1920 lists the current standards RFC's and explains the RFC standards process, and RFC 1941 is a FAQ list on the topic of Internet deployment in educational establishments.
MX record. A mail exchanger record (MX record) is a type of resource record in the Domain Name System that specifies a mail server responsible for accepting email messages on behalf of a recipient's domain, and a preference value used to prioritize mail delivery if multiple mail servers are available.
The StrykerÂ® MX-PRO R3 is light, durable, and fast-handling. AverMed offers a complete line of emergency patient handling equipment, including ambulance cots, emergency stretchers, stair chairs, backboards, splinting devices, restraints and other EMS supplies.