I am wondering if the show ip nat translations verbose command is supported on ASR1002 running software version IOS-XE Software (PPC_LINUX_IOSD-ADVIPSERVICESK9-M), Version 15.0(1)S?
On C876 router the output is the following. In this case i am able to check via the "left" parameter the time the ip nat translations will be in the list before it gets removed. The output on the ASR is different and you are not able to see the left parameter?
C876W-HO#sh ip nat translations verbose
Pro Inside global Inside local Outside local Outside global