Alton, New Hampshire Area Codes

603
Map of Alton Local time Prefixes

Map of Alton

Local time – 1 timezone

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Atlantic timezone

Prefixes – 2 codes

Prefix
Type
Location
Carrier
Assigned
Landline
Idt America, Corp. - NH
2009/10/30
(603) 855-2
Landline
Idt America, Corp. - NH
2009/11/02
(603) 855-5
Landline
Teleport Communications America - ID - LLC
2020/03/06
(603) 875
Landline
Union Tel. Co.
-

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