Gjennomsnittlig GPS-koordinater for postnummer 21228: 3.784, 98.694
Notering byer:
>> Selawan 21228, North Sumatra, Asahan, GPS-koordinater: 3.78434,98.69426
Notering byer:
>> Selawan 21228, North Sumatra, Asahan, GPS-koordinater: 3.78434,98.69426