| Id ; National ; International ; Comment | |
| fmt1_3/3/3 ; "XXX XXX XXX" ; "XXX XXX XXX" | |
| fmt2_3/3/3/3 ; "XXX XXX XXX XXX" ; "XXX XXX XXX XXX" | |
| fmt3_4/4/4 ; "XXXX XXXX XXXX" ; "XXXX XXXX XXXX" ; "When only 8 digits follow the area code formatting as XXXX XXXX\nseems preferred (see Bandwidth.com and SipMe)" | |
| fmt4_3/3/4 ; "XXX XXX XXXX" ; "XXX XXX XXXX" |