If you want to do this via API I believe this command will do it.
curl -L -H 'X-Cisco-Meraki-API-Key: <key>' -X GET -H 'Content-Type: application/json' 'https://api.meraki.com/api/v0/organizations/[organizationId]/deviceStatuses'
Successful HTTP Status: 200
[
{
"name":"My AP",
"serial":"Q2XX-XXXX-XXXX",
"mac":"00:11:22:33:44:55:66",
"status":"online",
"lanIp:"1.2.3.4",
"publicIp":"4.3.2.1",
"networkId":"N_1234"
}
]
Or possibly this one here
curl -L -H 'X-Cisco-Meraki-API-Key: <key>' -X GET -H 'Content-Type: application/json' 'https://api.meraki.com/api/v0/organizations/[id]/inventory'
[
{
"mac": "00:18:0a:12:2d:da",
"serial": "Q2AT-Z8Q8-7TPH",
"networkId": "L_646829496481095660",
"model": "MC74",
"claimedAt": "1483748363.47231",
"publicIp": "198.27.198.2"
}
]