I need to block a few numbers. Should I use LRT or fraud-protection?

I am using lrt and trying to block the From number using the below Local-policy, SA and Sip-response-map but its not working. What am I missing?

local-policy
from-address *
to-address *
source-realm AWS_PSTN_Call_Prod_LVS
description
activate-time
deactivate-time
state enabled
parallel-forking disabled
policy-priority none
policy-attribute
next-hop lrt:Blocking;key=$FROM
realm CORP-R01
action none
terminate-recursion disabled
carrier
start-time 0000
end-time 2400
days-of-week U-S
cost 0
state enabled
app-protocol
methods
media-profiles
lookup single
next-key
auth-user-lookup
eloc-str-lkup disabled
eloc-str-match
policy-attribute
next-hop sag:NSM-PYPL
realm CORP-R01
action none
terminate-recursion disabled
carrier
start-time 0000
end-time 2400
days-of-week U-S
cost 0
state enabled
app-protocol
methods
media-profiles
lookup single
next-key
auth-user-lookup
eloc-str-lkup disabled