NESS D8XD alarm system deault ip address confusion

[zillah]

Dear folks

NESS D8XD alarm system installed on a business for my friend and a technician who installed it he said he didn't change the alarm system default ip address.

Ness Corporation NESS D8XD DELUXE NAVIGATOR CONTROL PANEL - Home Security - Control Panels - Security

Default ip is 192.168.0.251 ,,,as per the advise of their National Customer Service Centre,,,I called them and spoke with them

The confusing part I can ping this ip address (192.168.0.251) but it is neither in the list of the attached wired devices nor in the list of attached wireless devices (any way NESS is a wired box)

Snapshot below is for the attached wired devices :

https://imgur.com/a/GPvm98R

And the ping result is below :

C:\WINDOWS\System32>ping 192.168.0.251
 
Pinging 192.168.0.251 with 32 bytes of data:
Reply from 192.168.0.251: bytes=32 time=6ms TTL=64
Reply from 192.168.0.251: bytes=32 time=2ms TTL=64
Reply from 192.168.0.251: bytes=32 time=3ms TTL=64
Reply from 192.168.0.251: bytes=32 time=4ms TTL=64
 
Ping statistics for 192.168.0.251:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 2ms, Maximum = 6ms, Average = 3ms

Confusion how can I ping the ip address and it is not listed in my router table ???

Thanks

 

[AMD_man]

Are those all of the connected devices? Can't you scroll down in that list?

 

[zillah]

After that list it would ARP table for the wireless devices
Thx