Unless they're homeless, they have an address. When you run a business out of your home, your home address and your business address are the same. And the law

Unless they're homeless, they have an address. When you run a business out of your home, your home address and your business address are the same. And the law requires a phone number or email address. As at least one of these are required as part of the business registration process or for various business-related compliance, it's simply not possible for a legitimate business (whether solo or company) not to have either.