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NDC: 623

This is the National Destination Code(NDC):623 page list. Its detail is as below.
Area code 623 was first put in service March 1, 1999. Currently, the largest city it serves is Phoenix, AZ, and it overlaps coverage areas with area code .
Prefix State Primary city Usage Carrier
(623) 910- Arizona Phoenix Wireless Cellco Partnership DBA Verizon Wireless
(623) 915- Arizona Phoenix Landline Qwest Corporation
(623) 925- Arizona Goodyear Landline Qwest Corporation
(623) 930- Arizona Phoenix Landline Qwest Corporation
(623) 931- Arizona Phoenix Landline Qwest Corporation
(623) 932- Arizona Goodyear Landline Qwest Corporation
(623) 933- Arizona Sun City Landline Qwest Corporation
(623) 934- Arizona Phoenix Landline Qwest Corporation
(623) 935- Arizona Litchfield Park Landline Qwest Corporation
(623) 936- Arizona Phoenix Landline Qwest Corporation
(623) 937- Arizona Phoenix Landline Qwest Corporation
(623) 939- Arizona Phoenix Landline Qwest Corporation
(623) 972- Arizona Sun City Landline Qwest Corporation
(623) 974- Arizona Sun City Landline Qwest Corporation
(623) 975- Arizona Surprise Landline Qwest Corporation
(623) 977- Arizona Sun City Landline Qwest Corporation
(623) 979- Arizona Glendale Landline Qwest Corporation
(623) 980- Arizona Phoenix Wireless Cellco Partnership DBA Verizon Wireless
(623) 986- Arizona Phoenix Wireless Cellco Partnership DBA Verizon Wireless
(623) 999- Arizona Phoenix Landline Neutral Tandem-arizona