There’s a Difference Between Spoofing & Dynamic Caller ID
Dynamic caller ID & number spoofing differ from one another in terms of legality & efficacy. With dynamic caller ID, you are the legal owner of a given set of local phone numbers. So if a contact misses your call, they are able to return that call using the local number that appeared on their caller ID.
Number spoofing is not only illegal, but also ineffective. It involves tricking carriers using phone numbers that are owned by another entity. Because of this, consumers can’t call back spoofed numbers meaning that your calls can’t be returned.
Dynamic caller ID & local presence dialing are NOT considered illegal number spoofing.