Block Port 22 via iRules

sorry can't help you there. but in general i think this is an issue with any ip database, there will be errors and those errors can cause issue for you. be sure to update the database on the big-ip regulary.

you could start with logging the locations and checking if you see entries you don't expect. but im afraid that a solution like this will always require some exceptions.

perhaps that is the best way to go; next to your location checking add a subnet whitelist to quickly add wrongly classified networks.