Hey, doesn't look suspicious:
redacted> set vsx off
redacted> show configuration static-route
set static-route default nexthop gateway address 10.43.16.1 on
set static-route 161.89.0.0/16 nexthop gateway address 10.43.16.1 on
redacted> show route
Codes: C - Connected, S - Static, R - RIP, B - BGP (D - Default),
O - OSPF IntraArea (IA - InterArea, E - External, N - NSSA),
IS - IS-IS (L1 - Level 1, L2 - Level 2, IA - InterArea, E - External),
A - Aggregate, K - Kernel Remnant, H - Hidden, P - Suppressed,
NP - NAT Pool, U - Unreachable, i - Inactive
S 0.0.0.0/0 via 10.43.16.1, Mgmt, cost 0, age 407222
C 10.43.16.0/24 is directly connected, Mgmt
C 100.100.100.0/30 is directly connected, Sync
Sync
C 127.0.0.0/8 is directly connected, lo
S redacted/16 via 10.43.16.1, Mgmt, cost 0, age 407222