resources/metadata/501/formats.csv - external/libphonenumber - Git at Google

 Id           ; National         ; International    ; Comment
 fmt1_3/4     ; "XXX-XXXX"       ; "XXX-XXXX"       ; "Adding hyphen following the Belize Telemedia formatting rules."
 fmt2_1/3/4/3 ; "X-XXX-XXXX-XXX" ; "X-XXX-XXXX-XXX"
	Id ; National ; International ; Comment
	fmt1_3/4 ; "XXX-XXXX" ; "XXX-XXXX" ; "Adding hyphen following the Belize Telemedia formatting rules."
	fmt2_1/3/4/3 ; "X-XXX-XXXX-XXX" ; "X-XXX-XXXX-XXX"