Phone Prefix
(408) 721-XXXX
CA • SUNNYVALE
Search Number in This Prefix
Enter the last 4 digits to search for a specific number
Carrier Information
NANPA
State
CA
Region
WC
Rate Center
SUNNYVALE
Assigned To
PACIFIC BELL
OCN
9740
Status
RT
Number Range
First Number
(408) 721-0000
Last Number
(408) 721-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
63 reports
63
Total FCC + FTC DNC complaints for numbers in this prefix
Top 45 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (408) 721-2373 4087212373 | 4 |
| 2 | (408) 721-2189 4087212189 | 4 |
| 3 | (408) 721-4809 4087214809 | 3 |
| 4 | (408) 721-3210 4087213210 | 3 |
| 5 | (408) 721-4525 4087214525 | 2 |
| 6 | (408) 721-2205 4087212205 | 2 |
| 7 | (408) 721-8744 4087218744 | 2 |
| 8 | (408) 721-4951 4087214951 | 2 |
| 9 | (408) 721-4813 4087214813 | 2 |
| 10 | (408) 721-4168 4087214168 | 2 |
| 11 | (408) 721-2579 4087212579 | 2 |
| 12 | (408) 721-4498 4087214498 | 2 |
| 13 | (408) 721-5955 4087215955 | 1 |
| 14 | (408) 721-6023 4087216023 | 1 |
| 15 | (408) 721-6114 4087216114 | 1 |
| 16 | (408) 721-6596 4087216596 | 1 |
| 17 | (408) 721-6741 4087216741 | 1 |
| 18 | (408) 721-6935 4087216935 | 1 |
| 19 | (408) 721-7382 4087217382 | 1 |
| 20 | (408) 721-7677 4087217677 | 1 |
| 21 | (408) 721-7902 4087217902 | 1 |
| 22 | (408) 721-8065 4087218065 | 1 |
| 23 | (408) 721-8149 4087218149 | 1 |
| 24 | (408) 721-8256 4087218256 | 1 |
| 25 | (408) 721-8277 4087218277 | 1 |
| 26 | (408) 721-8285 4087218285 | 1 |
| 27 | (408) 721-8303 4087218303 | 1 |
| 28 | (408) 721-8434 4087218434 | 1 |
| 29 | (408) 721-8451 4087218451 | 1 |
| 30 | (408) 721-8488 4087218488 | 1 |
| 31 | (408) 721-8573 4087218573 | 1 |
| 32 | (408) 721-8665 4087218665 | 1 |
| 33 | (408) 721-0105 4087210105 | 1 |
| 34 | (408) 721-8980 4087218980 | 1 |
| 35 | (408) 721-1855 4087211855 | 1 |
| 36 | (408) 721-2063 4087212063 | 1 |
| 37 | (408) 721-2308 4087212308 | 1 |
| 38 | (408) 721-2410 4087212410 | 1 |
| 39 | (408) 721-2497 4087212497 | 1 |
| 40 | (408) 721-2688 4087212688 | 1 |
| 41 | (408) 721-3197 4087213197 | 1 |
| 42 | (408) 721-3635 4087213635 | 1 |
| 43 | (408) 721-4202 4087214202 | 1 |
| 44 | (408) 721-4423 4087214423 | 1 |
| 45 | (408) 721-4696 4087214696 | 1 |
About This Prefix
Phone numbers starting with (408) 721 are part of the North American Numbering Plan (NANP). The first three digits (408) represent the Area Code (NPA), and the next three digits (721) represent the Central Office Code (NXX) or exchange.
- NPA (408) - Numbering Plan Area, identifies the geographic region
- NXX (721) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)