Prefixes
With a population of less than 200,000, the number of prefixes on Guam is limited.
Here is a list of landline prefixes on Guam and their associated geographic locations:
- 3XX: U.S. Military
- 47X: Hagåtña, Agana Heights, Asan-Maina, Piti, Chalan-Pago-Ordot, Mongmong-Toto-Maite
- 56X: Agat, Santa Rita
- 63X: Dededo
- 64X: Tamuning
- 65X: Yigo
- 73X: Mangilao, Barrigada
- 789: Yona, Talofofo
- 828: Merizo, Inarajan, Umatac
- 969: Marianas CableVision's "MCV Phone"
Read more about this topic: Area Code 671