Phone Prefix
(408) 400-XXXX
CA • SUNNYVALE
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Carrier Information
NANPA
State
CA
Region
WC
Rate Center
SUNNYVALE
Assigned To
PACIFIC BELL
OCN
9740
Status
RT
Number Range
First Number
(408) 400-0000
Last Number
(408) 400-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
31 reports
31
Total FCC + FTC DNC complaints for numbers in this prefix
Top 29 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (408) 400-7168 4084007168 | 2 |
| 2 | (408) 400-2124 4084002124 | 2 |
| 3 | (408) 400-1924 4084001924 | 1 |
| 4 | (408) 400-2001 4084002001 | 1 |
| 5 | (408) 400-2023 4084002023 | 1 |
| 6 | (408) 400-2159 4084002159 | 1 |
| 7 | (408) 400-2299 4084002299 | 1 |
| 8 | (408) 400-2325 4084002325 | 1 |
| 9 | (408) 400-2397 4084002397 | 1 |
| 10 | (408) 400-2573 4084002573 | 1 |
| 11 | (408) 400-2669 4084002669 | 1 |
| 12 | (408) 400-2713 4084002713 | 1 |
| 13 | (408) 400-2755 4084002755 | 1 |
| 14 | (408) 400-2765 4084002765 | 1 |
| 15 | (408) 400-2787 4084002787 | 1 |
| 16 | (408) 400-2951 4084002951 | 1 |
| 17 | (408) 400-3151 4084003151 | 1 |
| 18 | (408) 400-3331 4084003331 | 1 |
| 19 | (408) 400-3370 4084003370 | 1 |
| 20 | (408) 400-4684 4084004684 | 1 |
| 21 | (408) 400-7031 4084007031 | 1 |
| 22 | (408) 400-7072 4084007072 | 1 |
| 23 | (408) 400-7475 4084007475 | 1 |
| 24 | (408) 400-7838 4084007838 | 1 |
| 25 | (408) 400-7940 4084007940 | 1 |
| 26 | (408) 400-8460 4084008460 | 1 |
| 27 | (408) 400-0923 4084000923 | 1 |
| 28 | (408) 400-9487 4084009487 | 1 |
| 29 | (408) 400-1207 4084001207 | 1 |
About This Prefix
Phone numbers starting with (408) 400 are part of the North American Numbering Plan (NANP). The first three digits (408) represent the Area Code (NPA), and the next three digits (400) represent the Central Office Code (NXX) or exchange.
- NPA (408) - Numbering Plan Area, identifies the geographic region
- NXX (400) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)