Phone Prefix
(603) 397-XXXX
NH • DURHAM
Search Number in This Prefix
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Carrier Information
NANPA
State
NH
Region
NE
Rate Center
DURHAM
Assigned To
LEVEL 3 COMMUNICATIONS, LLC - NH
OCN
4017
Status
AS
Date Assigned
Aug 16, 2005
Number Range
First Number
(603) 397-0000
Last Number
(603) 397-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
21 reports
21
Total FCC + FTC DNC complaints for numbers in this prefix
Top 19 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (603) 397-0344 6033970344 | 2 |
| 2 | (603) 397-0654 6033970654 | 2 |
| 3 | (603) 397-0635 6033970635 | 1 |
| 4 | (603) 397-0800 6033970800 | 1 |
| 5 | (603) 397-1806 6033971806 | 1 |
| 6 | (603) 397-1892 6033971892 | 1 |
| 7 | (603) 397-1945 6033971945 | 1 |
| 8 | (603) 397-3283 6033973283 | 1 |
| 9 | (603) 397-3507 6033973507 | 1 |
| 10 | (603) 397-3510 6033973510 | 1 |
| 11 | (603) 397-3788 6033973788 | 1 |
| 12 | (603) 397-4026 6033974026 | 1 |
| 13 | (603) 397-4095 6033974095 | 1 |
| 14 | (603) 397-4101 6033974101 | 1 |
| 15 | (603) 397-4749 6033974749 | 1 |
| 16 | (603) 397-6929 6033976929 | 1 |
| 17 | (603) 397-0022 6033970022 | 1 |
| 18 | (603) 397-8685 6033978685 | 1 |
| 19 | (603) 397-0395 6033970395 | 1 |
About This Prefix
Phone numbers starting with (603) 397 are part of the North American Numbering Plan (NANP). The first three digits (603) represent the Area Code (NPA), and the next three digits (397) represent the Central Office Code (NXX) or exchange.
- NPA (603) - Numbering Plan Area, identifies the geographic region
- NXX (397) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)