Mason City, Illinois Area Codes

Map of Mason City

Local time – 1 timezone

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Eastern timezone

Prefixes – 3 codes

Prefix
Type
Location
Carrier
Assigned
Landline
Level 3 Communications, LLC - AK
2003/01/02
(217) 360-0
Landline
Level 3 Communications, LLC - AK
-
(217) 360-1
Landline
Peerless Network of Illinois, LLC - IL
2015/10/06
(217) 360-2
Landline
Onvoy, LLC
2020/04/21
(217) 360-3
Landline
Onvoy, LLC
2018/07/02
(217) 360-4
Landline
Onvoy, LLC
2020/04/21
(217) 360-5
Landline
Onvoy, LLC
2020/04/21
(217) 360-6
Landline
Teleport Communications America - ID - LLC
2015/12/28
(217) 360-7
Landline
Onvoy, LLC
2020/04/21
(217) 360-8
Landline
Onvoy, LLC
2019/03/22
(217) 360-9
Landline
Onvoy, LLC
2019/03/22
(217) 482
Landline
Citizens Telecom CO Illinois-frontier Citizens -il
-
Landline
Radiantiq LLC
2021/04/26
(447) 257-4
Landline
Radiantiq LLC
2021/04/27
(447) 257-7
Landline
Onvoy, LLC
2021/07/06