chickadee » hostinfo » protocol-number->protoinfo

hostname->hostinfo NAMEprocedure
ip->hostinfo IPADDRprocedure
service-name->servinfo NAMEprocedure
service-port->servinfo NUMprocedure
protocol-name->protoinfo NAMEprocedure
protocol-number->protoinfo NUMprocedure

These lookups correspond to those described in Short and sweet, but return a full record. The entire record is filled in a single system call.