OID value: 1.3.6.1.2.1.4.21.1
OID description:
ipRouteEntry OBJECT-TYPE SYNTAX IpRouteEntry ACCESS not-accessible STATUS mandatory DESCRIPTION "A route to a particular destination." INDEX { ipRouteDest } ::= { ipRouteTable 1 }
See also the OID Repository website reference for 1.3.6.1.2.1.4.21.1