This is a list of 800 prefixes in order by state. The number in parentheses indicates the area code served by that 1-800 prefix. An asterisk (*) to the left of the prefix indicates that one or more 800 numbers have been found in that prefix which can be whistled off using 2600 Hz. An asterisk to the right indicates that a toll switching office has been located in the area code served by that prefix which will accept MF. Some of the prefixes listed below are easy to hack for blowable numbers. Look for the ones with asterisks before and after them like this: *XXX*.
