RFCs often cover protocols with a well-known acronym, but the acronym itself is rarely given in the RFC title, just its expansion. Therefore, if you know the acronym but not what it stands for, you may not be able to find the RFC. This table gives the most common protocol acronyms and links you to their RFC.

ARP	BOOTP	DHCP	DNS	ECHO	FINGER	FTP	HTML 2.0	HTTP/1.1
ICMP	IGMP	IMAP	IP	IPv6	IRC	MAIL	MIME	NFS
NNTP	NTP	POP3	PPP	QUOTE	RARP	RPC	SLIP	SMTP
SNMP	SNMPv2	SNTPv4	SOCKS	TCP	TELNET	TFTP	TIME	UDP
XDR