RP/0/RP0/CPU0:R1#show route isis
Mon Sep  7 07:08:23.888 UTC

i L1 2.2.2.2/32 [115/10] via 10.1.2.2, 00:10:19, GigabitEthernet0/0/0/0
i L1 10.2.3.0/24 [115/20] via 10.1.2.2, 00:10:19, GigabitEthernet0/0/0/0
RP/0/RP0/CPU0:R1#show route 0.0.0.0/0
Mon Sep  7 07:08:24.191 UTC

% Network not in table

RP/0/RP0/CPU0:R1#show route 4.4.4.4/32
Mon Sep  7 07:08:24.417 UTC

% Network not in table

RP/0/RP0/CPU0:R1#traceroute 4.4.4.4 source 1.1.1.1
Mon Sep  7 07:08:24.589 UTC

Type escape sequence to abort.
Tracing the route to 4.4.4.4

 1  1.1.1.1 !N  *  !N