<Table> <Tr> <Th> Use </Th> <Th> Codes (italics not yet active) </Th> </Tr> <Tr> <Td> Canada special services </Td> <Td> 600, 622, 633, 644, 655, 677, 688 </Td> </Tr> <Tr> <Td> Interexchange carrier - specific services </Td> <Td> 700 </Td> </Tr> <Tr> <Td> Personal communications services </Td> <Td> 500, 521, 522, 523, 524, 525, 526, 527, 528, 529, 532, 533, 535, 538, 542, 543, 544, 545, 546, 547, 549, 550, 552, 553, 554, 556, 566, 558, 569, 577, 578, 588, 589 </Td> </Tr> <Tr> <Td> Premium call services </Td> <Td> 900 </Td> </Tr> <Tr> <Td> Toll - free </Td> <Td> 800, 822, 833, 844, 855, 866, 877, 880, 881, 882, 883, 884, 885, 886, 887, 888, 889 </Td> </Tr> <Tr> <Td> US government </Td> <Td> 710 </Td> </Tr> </Table> <Tr> <Th> Use </Th> <Th> Codes (italics not yet active) </Th> </Tr> <Tr> <Td> Canada special services </Td> <Td> 600, 622, 633, 644, 655, 677, 688 </Td> </Tr> <Tr> <Td> Interexchange carrier - specific services </Td> <Td> 700 </Td> </Tr>

A list of area codes in the united states