Local Calling Guide
Area code/prefix search
NPA: 603
[Rate centres in NPA 603]
[Dial plan for NPA 603]
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 603-454
| 4 |
Sunapee |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-454
| 5 |
Sunapee |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-454
| 6 |
Sunapee |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-454
| 7 |
Sunapee |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-454
| 8 |
Sunapee |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-454
| 9 |
Sunapee |
NH |
|
145J TERRA NOVA TELECOM INC. |
122 |
|
2021-05-28 |
|
| 603-455
| A |
Laconia |
NH |
MNCHNHCOX4Z |
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-455
| 0 |
Laconia |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-455
| 1 |
Laconia |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-455
| 2 |
Laconia |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-455
| 3 |
Laconia |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-455
| 4 |
Laconia |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-455
| 5 |
Laconia |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-455
| 6 |
Laconia |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-455
| 7 |
Laconia |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-455
| 8 |
Laconia |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-455
| 9 |
Laconia |
NH |
|
6290 UNITED STATES CELLULAR - NH |
122 |
|
|
|
| 603-456
| A |
Warner |
NH |
WRNRNHXARP0 |
0047 MERRIMACK COUNTY TEL. CO. |
122 |
|
|
|
| 603-456
| 0 |
Warner |
NH |
WRNRNHXARP0 |
0047 MERRIMACK COUNTY TEL. CO. |
122 |
|
|
|
| 603-456
| 1 |
Warner |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2022-03-11 |
|
| 603-456
| 2 |
Warner |
NH |
WRNRNHXARP0 |
0047 MERRIMACK COUNTY TEL. CO. |
122 |
|
|
|
| 603-456
| 3 |
Warner |
NH |
WRNRNHXARP0 |
0047 MERRIMACK COUNTY TEL. CO. |
122 |
|
|
|
| 603-456
| 4 |
Warner |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2024-07-23 |
|
| 603-456
| 5 |
Warner |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2023-09-05 |
|
| 603-456
| 8 |
Warner |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2014-07-01 |
|
| 603-456
| 9 |
Warner |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2022-10-19 |
|
| 603-457
| A |
Dover |
NH |
ROCHNHWE4MD |
314C IDT AMERICA, CORP. - NH |
122 |
|
|
|
| 603-457
| 0 |
Dover |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2021-07-02 |
|
| 603-457
| 1 |
Dover |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2021-07-02 |
|
| 603-457
| 2 |
Dover |
NH |
ROCHNHWE4MD |
314C IDT AMERICA, CORP. - NH |
122 |
|
2021-01-18 |
|
| 603-457
| 3 |
Dover |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2021-07-02 |
|
| 603-457
| 4 |
Dover |
NH |
MNCHNHCOX9Z |
637E ONVOY, LLC - NH |
122 |
|
2021-03-25 |
|
| 603-457
| 5 |
Dover |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2021-07-02 |
|
| 603-457
| 6 |
Dover |
NH |
DRRYNHBC1MD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
122 |
|
2021-07-02 |
|
| 603-457
| 7 |
Dover |
NH |
MNCHNHCOX9Z |
637E ONVOY, LLC - NH |
122 |
|
2021-05-07 |
|
| 603-457
| 8 |
Dover |
NH |
MNCHNHBODS0 |
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
2021-05-01 |
|
| 603-457
| 9 |
Dover |
NH |
MNCHNHBODS0 |
927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH |
122 |
|
2021-01-19 |
|
| 603-458
| A |
Salem |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
|
|
| 603-458
| 0 |
Salem |
NH |
MNCHNHCOX9Z |
637E ONVOY, LLC - NH |
122 |
|
2022-09-29 |
|
| 603-458
| 1 |
Salem |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
|
|
| 603-458
| 2 |
Salem |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
|
|
| 603-458
| 3 |
Salem |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
2022-09-21 |
|
| 603-458
| 4 |
Salem |
NH |
MNCHNHCOX9Z |
637E ONVOY, LLC - NH |
122 |
|
2023-06-12 |
|
| 603-458
| 5 |
Salem |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
|
|
| 603-458
| 6 |
Salem |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
2011-03-04 |
|
| 603-458
| 7 |
Salem |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
2012-06-03 |
|
| 603-458
| 8 |
Salem |
NH |
MNCHNHACAMD |
6386 BELL ATLANTIC MOBILE, INC |
122 |
|
2022-09-28 |
|
| 603-458
| 9 |
Salem |
NH |
MNCHNHIE6MD |
318J COMCAST IP PHONE, LLC |
122 |
|
2022-09-21 |
|
| 603-459
| A |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
2025-04-30 |
|
| 603-459
| 0 |
Nashua |
NH |
|
829J PAETEC ITEL, LLC |
122 |
|
|
|
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Last updated: Tue, 16 Jun 2026 00:09:45 UTC
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