I think "consumer" is being contrasted with a business contract offering static ip.
You should know because it is currently blocked - found by using mxtoolbox.com for example.
Or, suspect it will be because the ip to your residence is not a designated static ip. (In practice it may be ipv6 and never changes but applying a PTR to the ip requires assistance from the ISP and it would likely be outside of the contract.)
How can you tell if the IP you use is or has been in one of those ranges?