Why all my IP Addresses end with zeroes?
Most likely this is caused by the IP anonymization settings. IP anonymization replaces real octets of IP addresses with zeroes.
Since you can either choose to obscure one two or three octets the addresses will be presented in your Piwik PRO like this:
Actual IP 18.104.22.168
One octet: 22.214.171.124
Two octets: 126.96.36.199
Three octets: 188.8.131.52
You can toggle the IP Anonymization in your Analytics Settings under the Privacy tab
Take a look at this article to learn more about IP anonymization.