Slide 18 of 87

RFCs are the official document series of the IAB, and are archived permanently (i.e., they are never deleted, and once an RFC is published, it will never change); however, it is important to note that not all RFCs are standards (see the "IETF structure and Internet standards process" slides for complete
information or browse the RFC Editor Web pages at ISI). The Database and Directory Services part of the InterNIC, provided by AT&T, has an RFC index .