OID value: 1.3.6.1.2.1.4.21.1.1
OID description:
ipRouteDest OBJECT-TYPE SYNTAX IpAddress ACCESS read-write STATUS mandatory DESCRIPTION "The destination IP address of this route. An entry with a value of 0.0.0.0 is considered a default route. Multiple routes to a single destination can appear in the table, but access to such multiple entries is dependent on the table- access mechanisms defined by the network management protocol in use." ::= { ipRouteEntry 1 }
See also the OID Repository website reference for 1.3.6.1.2.1.4.21.1.1