▁numbers ▁is ▁to ▁compare ▁two ▁nom inal ▁numbers ▁to ▁see ▁whether ▁they ▁are ▁identical ▁or ▁not ▁( wh ether ▁they ▁refer ▁to ▁the ▁same ▁object ). ▁ ▁Ex amples ▁A ▁great ▁variety ▁of ▁numbers ▁meet ▁the ▁broad ▁definition , ▁including : ▁ ▁National ▁identification ▁numbers , ▁such ▁as : ▁ ▁Social ▁Security ▁numbers ▁ ▁Driver ' s ▁license ▁numbers ▁ ▁National ▁In sur ance ▁number ▁ ▁Rout ing ▁numbers , ▁such ▁as : ▁ ▁Bank ▁codes ▁and ▁sort ▁codes , ▁such ▁as ▁International ▁Bank ▁Account ▁Num bers ▁or ▁A BA ▁routing ▁trans it ▁numbers . ▁ ▁Post al ▁codes , ▁such ▁as ▁Z IP ▁codes ▁( Th ese ▁are ▁generally ▁numeric ▁in ▁the ▁United ▁States , ▁but ▁other ▁nations ▁often ▁use ▁al phan umeric ▁systems .) ▁ ▁Tele phone ▁numbers , ▁assigned ▁by ▁various ▁tele phone ▁number ing ▁plans , ▁such ▁as ▁the ▁IT U - T ▁E . 1 6 4 ▁and ▁the ▁North ▁American ▁Number ing ▁Plan ▁( N AN PA ). ▁ ▁Num bers ▁of ▁train ▁or ▁bus ▁routes ▁or ▁the ▁individual ▁vehicles ▁in ▁public ▁transport ▁ ▁Car ▁model ▁names ▁from ▁some ▁car ▁manufact ur ers , ▁such ▁as ▁B MW ▁or ▁Pe uge ot , ▁are ▁plain ▁numbers . ▁ ▁These ▁are ▁usually ▁assigned ▁either ▁in ▁some ▁hier arch ical ▁way , ▁such ▁as ▁how ▁tele phone ▁numbers ▁are ▁assigned ▁( in ▁N AN PA ) ▁as ▁Country ▁Code ▁+ ▁Area ▁Code ▁+ ▁P refix ▁+ ▁Su ff ix , ▁where ▁the ▁first ▁three ▁are ▁ge ograph ically ▁based