Find out who called from that unknown Sunnyvale number using our free reverse phone lookup service. Enter the full 10-digit number (including 408 and 669 or any other US area code) to search for available caller information including name, address, phone carrier, and more.
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Sunnyvale area codes are 408, 669.
Phone numbers reported as unwanted calls to the FTC by Sunnyvale residents in the last 30 days.
(404) 850-9016
Dropped call or no message
5 reports ·
(202) 660-1731
Dropped call or no message
4 reports ·
(520) 342-0107
Dropped call or no message
3 reports ·
(202) 350-2431
Dropped call or no message
2 reports ·
(408) 668-3588
Dropped call or no message
1 report ·
(332) 228-0743
Dropped call or no message
1 report ·
(408) 617-5342
Dropped call or no message
1 report ·
(415) 504-2097
Other
1 report ·
(888) 720-9452
Other
1 report ·
(339) 224-2452
Other
1 report ·
If you receive fraudulent calls or suspect a scam attempt, report it to reportfraud.ftc.gov or local police department using the following contacts:
List of prefixes are assigned to SUNNYVALE rate center. Filter by phone number prefix or carrier name.
| Prefix | Carrier |
|---|---|
| (408) 203 | AT&T |
| (408) 212 | Verizon |
| (408) 215 | Mcimetro Access Transmission Services |
| (408) 220 | Verizon |
| (408) 222 | Verizon |
| (408) 230 | T-Mobile |
| (408) 242 | AT&T |
| (408) 245 | AT&T |
| (408) 306 | AT&T |
| (408) 328 | AT&T |
| (408) 329 | Lumen |
| (408) 331 | Verizon |
| (408) 336 | AT&T |
| (408) 338 | AT&T |
| (408) 349 | Verizon |
| (408) 368 | AT&T |
| (408) 373 | T-Mobile |
| (408) 393 | T-Mobile |
| (408) 394 | T-Mobile |
| (408) 400 | AT&T |
| (408) 419 | AT&T |
| (408) 420 | T-Mobile |
| (408) 431 | AT&T |
| (408) 462 | Lumen |
| (408) 469 | Lumen |
| (408) 475 | Bandwidth |
| (408) 480 | T-Mobile |
| (408) 481 | AT&T |
| (408) 498 | Comcast IP Phone |
| (408) 505 | AT&T |
| (408) 507 | AT&T |
| (408) 522 | AT&T |
| (408) 523 | AT&T |
| (408) 524 | AT&T |
| (408) 530 | AT&T |
| (408) 541 | AT&T |
| (408) 542 | AT&T |
| (408) 543 | AT&T |
| (408) 585 | TPX Communications |
| (408) 593 | T-Mobile |
| (408) 594 | T-Mobile |
| (408) 598 | Verizon |
| (408) 604 | Verizon |
| (408) 616 | AT&T |
| (408) 617 | AT&T |
| (408) 636 | Verizon |
| (408) 663 | Verizon |
| (408) 664 | Teleport Communications America |
| (408) 675 | Lumen |
| (408) 685 | T-Mobile |
| (408) 701 | Global Crossing Local Services |
| (408) 702 | Lumen |
| (408) 718 | AT&T |
| (408) 720 | AT&T |
| (408) 721 | AT&T |
| (408) 730 | AT&T |
| (408) 731 | AT&T |
| (408) 732 | AT&T |
| (408) 733 | AT&T |
| (408) 734 | AT&T |
| (408) 735 | AT&T |
| (408) 736 | AT&T |
| (408) 737 | AT&T |
| (408) 738 | AT&T |
| (408) 739 | AT&T |
| (408) 743 | AT&T |
| (408) 744 | AT&T |
| (408) 745 | AT&T |
| (408) 746 | AT&T |
| (408) 747 | AT&T |
| (408) 749 | AT&T |
| (408) 752 | AT&T |
| (408) 756 | AT&T |
| (408) 757 | T-Mobile |
| (408) 769 | Verizon |
| (408) 773 | AT&T |
| (408) 774 | AT&T |
| (408) 789 | Verizon |
| (408) 822 | Verizon |
| (408) 830 | AT&T |
| (408) 835 | T-Mobile |
| (408) 836 | T-Mobile |
| (408) 900 | Onvoy |
| (408) 910 | T-Mobile |
| (408) 936 | AT&T |
| (408) 940 | Lumen |
| (408) 962 | Teleport Communications America |
| (408) 990 | Mcimetro Access Transmission Services |
| (408) 991 | AT&T |
| (408) 992 | AT&T |
| (669) 224 | T-Mobile |
| (669) 241 | T-Mobile |
| (669) 264 | Comcast IP Phone |
| (669) 600 | Onvoy |
Carrier names have been updated from their original FCC assignments to reflect current companies following mergers, acquisitions, and rebranding. Updates were determined using AI-assisted research and may not be accurate or reflect up to date changes. This data is provided without warranties of accuracy or completeness.