Find out who called from that unknown Rancho Cucamonga number using our free reverse phone lookup service. Enter the full 10-digit number (including 840 and 909 or any other US area code) to search for available caller information including name, address, phone carrier, and more.
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Rancho Cucamonga area codes are 909.
Phone numbers reported as unwanted calls to the FTC by Rancho Cucamonga residents in the last 30 days.
(855) 909-0815
Reducing your debt (credit cards, mortgage, student loans)
4 reports ·
(909) 278-8947
Calls pretending to be government, businesses, or family and friends
2 reports ·
(760) 905-6855
Calls pretending to be government, businesses, or family and friends
2 reports ·
(877) 875-2055
Reducing your debt (credit cards, mortgage, student loans)
1 report ·
(909) 543-0453
Other
1 report ·
(877) 679-8678
Other
1 report ·
(323) 380-0048
Reducing your debt (credit cards, mortgage, student loans)
1 report ·
(747) 218-5886
Reducing your debt (credit cards, mortgage, student loans)
1 report ·
(580) 949-1124
Other
1 report ·
(312) 815-2302
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:
10510 Civic Center Drive, Rancho Cucamonga, CA 91730-3801
List of prefixes are assigned to UPLAND rate center. Filter by phone number prefix or carrier name.
| Prefix | Carrier |
|---|---|
| (909) 204 | Lumen |
| (909) 243 | T-Mobile |
| (909) 244 | T-Mobile |
| (909) 256 | Charter |
| (909) 276 | Verizon |
| (909) 285 | Bandwidth |
| (909) 291 | TPX Communications |
| (909) 294 | Lumen |
| (909) 296 | AT&T |
| (909) 297 | Lumen |
| (909) 303 | Lumen |
| (909) 360 | CenturyLink Communications |
| (909) 367 | Verizon |
| (909) 373 | TPX Communications |
| (909) 377 | AT&T |
| (909) 466 | Frontier |
| (909) 476 | Frontier |
| (909) 477 | Frontier |
| (909) 481 | Frontier |
| (909) 483 | Frontier |
| (909) 484 | Frontier |
| (909) 493 | Lumen |
| (909) 527 | O1 Communications |
| (909) 532 | Verizon |
| (909) 552 | AT&T |
| (909) 560 | AT&T |
| (909) 579 | Frontier |
| (909) 581 | Frontier |
| (909) 608 | Frontier |
| (909) 652 | Charter |
| (909) 694 | Verizon |
| (909) 736 | Bandwidth |
| (909) 755 | Charter |
| (909) 758 | Frontier |
| (909) 767 | Verizon |
| (909) 774 | Charter |
| (909) 870 | Onvoy |
| (909) 908 | AT&T |
| (909) 912 | Lumen |
| (909) 919 | AT&T |
| (909) 920 | Frontier |
| (909) 921 | Frontier |
| (909) 931 | Frontier |
| (909) 932 | Frontier |
| (909) 941 | Frontier |
| (909) 942 | Frontier |
| (909) 944 | Frontier |
| (909) 945 | Frontier |
| (909) 946 | Frontier |
| (909) 948 | Frontier |
| (909) 949 | Frontier |
| (909) 980 | Frontier |
| (909) 981 | Frontier |
| (909) 982 | Frontier |
| (909) 985 | Frontier |
| (909) 987 | Frontier |
| (909) 989 | Frontier |
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.