Area Code 603 — Carriers, Line Types & Portability

Carrier breakdown and line-type data for area code 603 (NH), across 702 analyzed numbers. Useful for bulk-validating 603 calling lists and spotting VoIP/ported numbers before you dial or text.

Carriers in area code 603

CarrierNumbers analyzed
Verizon Wireless450
AT&T113
T-Mobile100
U.S. Cellular31
TELNYX3
Comcast2
Neutral Tandem1
Bandwidth.com1

Line types in 603

Line typeNumbers analyzed
WIRELESS594
PCS100
IPES5
CLEC2

Top rate centers

Rate centerNumbers analyzed
MANCHESTER80
DERRY68
CONCORD60
NASHUA59
PORTSMOUTH54
DOVER44
MERRIMACK34
LACONIA30

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