Keystone, Iowa Area Codes

Map of Keystone

Local time – 1 timezone

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Eastern timezone

Prefixes – 2 codes

Prefix
Type
Location
Carrier
Assigned
(319) 442
Landline
Keystone Farms Coop. Tel. Co.
-
Wireless
Cellco Partnership DBA Verizon Wireless
2011/02/21
(319) 488-0
Wireless
Cellco Partnership DBA Verizon Wireless
-
(319) 488-6
Wireless
Cellco Partnership DBA Verizon Wireless
2012/05/16
(319) 488-8
Landline
Integrated Path Communcations, LLC - IA
2018/05/01
(319) 488-9
Wireless
New Cingular Wireless PCS, LLC
2021/05/19