Can I spoof any number and have it show up on the Caller ID?

For calls to North America, almost any 10 digit number can be used as the caller ID. However, to prevent fraud and other illegal behavior, our servers are programmed not to complete certain calls. For example, our network will prevent the use of calling and spoofing as 911, numbers belonging to law enforcement agencies and financial institutions, and displaying the same caller ID as the party you're trying to reach.