Area Code Detail

Area Code 840

California (southwestern San Bernardino County and a small portion of Los Angeles and Riverside counties, including Fontana, Pomona, Chino Hills, Claremont, Chino, Ontario, and Redlands) · In service since February 23, 2021

CA
Reports, 30 Days 104

Recent FCC and FTC complaint records tied to this area code.

Reports, 180 Days 593

Broader complaint volume used to prioritize indexable pages.

Active Prefixes 138

Distinct NPA-NXX prefixes surfaced from routing and assignment data.

Carriers / Assignees 21

Named carriers, assignees, or code holders found in routing data.

Cities / Rate Centers 19

Distinct cities or rate centers attached to this area code.

States / Territories 1

Coverage footprint visible from NANPA, pooled block, and Canada routing data.

North American Phone Intelligence

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Overview

What this area code covers

California (southwestern San Bernardino County and a small portion of Los Angeles and Riverside counties, including Fontana, Pomona, Chino Hills, Claremont, Chino, Ontario, and Redlands)

overlaid on 909

Common cities and rate centers

Arrowhead Big Bear City Calimesa Chino Claremont Colton Crestline Diamond Bar Etiwanda Fontana Highland Marshall Mentone Ontario Pomona Redlands Rialto San Bernardino

Top carriers and assignees

  • ONVOY, LLC - CA · 301 routing rows
  • T-MOBILE USA, INC. · 295 routing rows
  • NEW CINGULAR WIRELESS PCS, LLC · 268 routing rows
  • CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA · 206 routing rows
  • COMMIO, LLC · 65 routing rows
  • FRACTEL, LLC · 63 routing rows
  • BANDWIDTH.COM CLEC, LLC - CA · 47 routing rows
  • ONVOY SPECTRUM, LLC · 43 routing rows
  • TELNYX LLC · 19 routing rows
  • PEERLESS NETWORK OF CALIFORNIA, LLC - CA · 19 routing rows
  • MULTIPLE OCN LISTING · 9 routing rows
  • BOOST SUBSCRIBERCO L.L.C. · 9 routing rows
NPA-NXX

Prefix directory inside area code 840

Each prefix below is collapsed to one primary locality row so you can scan the area code by prefix without the duplicated block-level assignment rows.

Prefix Primary Rate Center Primary City State
840-200-XXXX CHINO Chino CA
840-201-XXXX FONTANA Fontana CA
840-202-XXXX POMONA Pomona CA
840-203-XXXX S BERNDINO San Bernardino CA
840-204-XXXX S BERNDINO San Bernardino CA
840-205-XXXX CLAREMONT Claremont CA
840-206-XXXX CHINO Chino CA
840-207-XXXX ARROWHEAD Arrowhead CA
840-208-XXXX CLAREMONT Claremont CA
840-209-XXXX ARROWHEAD Arrowhead CA
840-210-XXXX FONTANA Fontana CA
840-211-XXXX CA
840-212-XXXX CHINO Chino CA
840-213-XXXX REDLANDS Redlands CA
840-214-XXXX MARSHALL Marshall CA
840-215-XXXX HIGHLAND Highland CA
840-216-XXXX ARROWHEAD Arrowhead CA
840-217-XXXX FONTANA Fontana CA
840-218-XXXX CHINO Chino CA
840-219-XXXX CALIMESA Calimesa CA
840-220-XXXX RIALTO Rialto CA
840-221-XXXX S BERNDINO San Bernardino CA
840-222-XXXX S BERNDINO San Bernardino CA
840-223-XXXX CALIMESA Calimesa CA
840-224-XXXX S BERNDINO San Bernardino CA
840-225-XXXX POMONA Pomona CA
840-226-XXXX POMONA Pomona CA
840-227-XXXX S BERNDINO San Bernardino CA
840-228-XXXX COLTON Colton CA
840-229-XXXX CLAREMONT Claremont CA
840-230-XXXX POMONA Pomona CA
840-231-XXXX POMONA Pomona CA
840-232-XXXX FONTANA Fontana CA
840-233-XXXX ARROWHEAD Arrowhead CA
840-234-XXXX ARROWHEAD Arrowhead CA
840-235-XXXX COLTON Colton CA
840-236-XXXX CLAREMONT Claremont CA
840-237-XXXX ONTARIO Ontario CA
840-238-XXXX POMONA Pomona CA
840-239-XXXX FONTANA Fontana CA
840-240-XXXX DIAMONDBAR Diamond Bar CA
840-241-XXXX RIALTO Rialto CA
840-242-XXXX UPLAND Upland CA
840-243-XXXX POMONA Pomona CA
840-244-XXXX DIAMONDBAR Diamond Bar CA
840-245-XXXX REDLANDS Redlands CA
840-246-XXXX ETIWANDA Etiwanda CA
840-247-XXXX HIGHLAND Highland CA
840-248-XXXX FONTANA Fontana CA
840-249-XXXX MARSHALL Marshall CA
840-250-XXXX ARROWHEAD Arrowhead CA
840-251-XXXX REDLANDS Redlands CA
840-252-XXXX MENTONE Mentone CA
840-253-XXXX CALIMESA Calimesa CA
840-254-XXXX RIALTO Rialto CA
840-255-XXXX S BERNDINO San Bernardino CA
840-256-XXXX UPLAND Upland CA
840-257-XXXX COLTON Colton CA
840-258-XXXX HIGHLAND Highland CA
840-259-XXXX POMONA Pomona CA
840-260-XXXX POMONA Pomona CA
840-261-XXXX FONTANA Fontana CA
840-262-XXXX ARROWHEAD Arrowhead CA
840-263-XXXX FONTANA Fontana CA
840-264-XXXX POMONA Pomona CA
840-265-XXXX ARROWHEAD Arrowhead CA
840-266-XXXX S BERNDINO San Bernardino CA
840-267-XXXX POMONA Pomona CA
840-268-XXXX MARSHALL Marshall CA
840-269-XXXX ONTARIO Ontario CA
840-270-XXXX ONTARIO Ontario CA
840-271-XXXX FONTANA Fontana CA
840-272-XXXX CHINO Chino CA
840-273-XXXX MENTONE Mentone CA
840-274-XXXX ARROWHEAD Arrowhead CA
840-275-XXXX POMONA Pomona CA
840-276-XXXX UPLAND Upland CA
840-277-XXXX CLAREMONT Claremont CA
840-278-XXXX ARROWHEAD Arrowhead CA
840-279-XXXX ONTARIO Ontario CA
840-280-XXXX S BERNDINO San Bernardino CA
840-281-XXXX COLTON Colton CA
840-282-XXXX CHINO Chino CA
840-283-XXXX ARROWHEAD Arrowhead CA
840-284-XXXX CHINO Chino CA
840-285-XXXX FONTANA Fontana CA
840-286-XXXX ARROWHEAD Arrowhead CA
840-287-XXXX MARSHALL Marshall CA
840-288-XXXX S BERNDINO San Bernardino CA
840-289-XXXX DIAMONDBAR Diamond Bar CA
840-290-XXXX UPLAND Upland CA
840-291-XXXX S BERNDINO San Bernardino CA
840-300-XXXX REDLANDS Redlands CA
840-311-XXXX CA
840-333-XXXX POMONA Pomona CA
840-336-XXXX COLTON Colton CA
840-345-XXXX POMONA Pomona CA
840-356-XXXX ARROWHEAD Arrowhead CA
840-400-XXXX ONTARIO Ontario CA
840-411-XXXX CA
840-444-XXXX ARROWHEAD Arrowhead CA
840-465-XXXX CHINO Chino CA
840-466-XXXX UPLAND Upland CA
840-500-XXXX BIGBEAR CY Big Bear City CA
840-511-XXXX CA
840-555-XXXX DIR ASST CA
840-587-XXXX S BERNDINO San Bernardino CA
840-588-XXXX DIAMONDBAR Diamond Bar CA
840-600-XXXX COLTON Colton CA
840-611-XXXX CA
840-666-XXXX FONTANA Fontana CA
840-677-XXXX ETIWANDA Etiwanda CA
840-688-XXXX CRESTLINE Crestline CA
840-699-XXXX ONTARIO Ontario CA
840-700-XXXX CA
840-711-XXXX CA
840-777-XXXX POMONA Pomona CA
840-788-XXXX FONTANA Fontana CA
840-799-XXXX RIALTO Rialto CA
840-800-XXXX UPLAND Upland CA
840-804-XXXX CLAREMONT Claremont CA
840-811-XXXX CA
840-837-XXXX POMONA Pomona CA
840-840-XXXX ONTARIO Ontario CA
840-877-XXXX MARSHALL Marshall CA
840-888-XXXX REDLANDS Redlands CA
840-899-XXXX HIGHLAND Highland CA
840-900-XXXX RIALTO Rialto CA
840-911-XXXX CA
840-950-XXXX CA
840-958-XXXX CA
840-959-XXXX CA
840-976-XXXX CA
840-977-XXXX CLAREMONT Claremont CA
840-996-XXXX S BERNDINO San Bernardino CA
840-997-XXXX CLAREMONT Claremont CA
840-998-XXXX HIGHLAND Highland CA
840-999-XXXX UPLAND Upland CA
Recent Signals

Latest complaint activity tied to 840

Complaint pages are the strongest indexing opportunity for this site right now, especially for exact phone numbers and toll-free exchanges.

FTC report from ILLINOIS

August 19, 2026 at 8:07 PM

840-234-5862 was logged as a live voice. Violation date: August 19, 2026 at 4:02 PM.

FTC report from Sierra Vista, ARIZONA

August 19, 2026 at 7:00 PM

840-300-3595 was logged as a robocall. Violation date: August 19, 2026 at 3:22 PM.

FTC report from Fort Washington, DISTRICT OF COLUMBIA

August 19, 2026 at 6:33 PM

840-221-8903 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 18, 2026 at 12:46 PM.

FTC report from UTAH

August 19, 2026 at 5:39 PM

840-221-9155 was logged as a robocall. Violation date: August 19, 2026 at 3:34 PM.

FTC report from Patient Refused, ARIZONA

August 19, 2026 at 2:01 PM

840-466-6808 was logged as a robocall. Violation date: July 30, 2026 at 3:06 PM.

FTC report from GEORGIA

August 19, 2026 at 2:00 PM

840-235-0941 was logged as a robocall. Violation date: August 19, 2026 at 1:55 PM.

FTC report from CALIFORNIA

August 19, 2026 at 1:09 PM

840-208-1171 was logged as a live voice. Violation date: August 7, 2026 at 11:00 AM.

FTC report from Gloucester, VIRGINIA

August 19, 2026 at 11:18 AM

840-799-7702 was logged as a robocall. Violation date: August 13, 2026 at 10:42 AM.

FTC report from Aldie, VIRGINIA

August 19, 2026 at 10:25 AM

840-800-8984 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 19, 2026 at 10:08 AM.

FTC report from NORTH CAROLINA

August 19, 2026 at 10:00 AM

840-221-9889 was logged as a robocall. Violation date: August 19, 2026 at 9:58 AM.

FTC report from Miami, FLORIDA

August 18, 2026 at 8:11 PM

840-221-9182 was logged as a robocall. Violation date: August 18, 2026 at 2:26 PM.

FTC report from MARYLAND

August 18, 2026 at 7:15 PM

840-666-6782 was logged as a live voice. Violation date: August 17, 2026 at 3:21 PM.

FTC report from Sandston, MARYLAND

August 18, 2026 at 7:03 PM

840-600-0150 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 18, 2026 at 5:17 PM.

FTC report from San Anselmo, CALIFORNIA

August 18, 2026 at 3:15 PM

840-221-9014 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 17, 2026 at 8:03 AM.

FTC report from Elk City, OKLAHOMA

August 18, 2026 at 2:38 PM

840-221-9868 was logged as a robocall. Violation date: August 15, 2026 at 1:30 PM.

FTC report from FLORIDA

August 18, 2026 at 9:59 AM

840-201-5197 was logged as a robocall. Category: No Subject Provided. Violation date: August 18, 2026 at 9:55 AM.

FTC report from Taallahassee, FLORIDA

August 17, 2026 at 8:48 PM

840-389-1023 was logged as a unwanted call. Category: No Subject Provided. Violation date: August 17, 2026 at 7:09 PM.

FTC report from Lubbock, TEXAS

August 17, 2026 at 7:59 PM

840-300-3123 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 17, 2026 at 6:54 PM.

FTC report from San Bernardino, CALIFORNIA

August 17, 2026 at 5:53 PM

840-209-3651 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 17, 2026 at 1:43 PM.

FTC report from San Bernardino, CALIFORNIA

August 17, 2026 at 5:40 PM

840-205-8089 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 17, 2026 at 1:42 PM.

FTC report from Lynchburg, VIRGINIA

August 17, 2026 at 4:51 PM

840-390-6290 was logged as a live voice. Category: Vacation & timeshares. Violation date: August 17, 2026 at 2:20 PM.

FTC report from North Charleston, SOUTH CAROLINA

August 17, 2026 at 4:26 PM

840-205-0457 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 7, 2026 at 12:00 PM.

FTC report from TEXAS

August 17, 2026 at 11:14 AM

840-600-8348 was logged as a robocall. Category: Dropped call or no message. Violation date: August 17, 2026 at 10:01 AM.

FTC report from Fontana, CALIFORNIA

August 16, 2026 at 12:56 PM

840-253-2393 was logged as a live voice. Violation date: August 11, 2026 at 4:31 PM.

FTC report from Hastings, FLORIDA

August 15, 2026 at 12:02 PM

840-300-0197 was logged as a live voice. Violation date: August 15, 2026 at 10:57 AM.

FTC report from Huntington Beach, CALIFORNIA

August 14, 2026 at 7:59 PM

840-253-6757 was logged as a robocall. Violation date: August 13, 2026 at 2:50 PM.

FTC report from Gallup, NEW MEXICO

August 14, 2026 at 2:51 PM

840-229-6346 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 14, 2026 at 4:17 PM.

FTC report from Wilmington, DELAWARE

August 13, 2026 at 9:22 PM

840-466-6705 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 6, 2026 at 5:06 PM.

FTC report from NORTH CAROLINA

August 13, 2026 at 2:06 PM

840-229-6297 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 12, 2026 at 12:00 AM.

FTC report from CALIFORNIA

August 13, 2026 at 1:02 PM

This report was logged as a live voice. Category: No Subject Provided. Violation date: August 12, 2026 at 12:00 AM.

FTC report from FLORIDA

August 13, 2026 at 10:54 AM

840-221-9812 was logged as a robocall. Violation date: August 13, 2026 at 10:48 AM.

FTC report from SOUTH CAROLINA

August 13, 2026 at 10:53 AM

840-466-6208 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 11, 2026 at 2:24 PM.

FTC report from Flint, TEXAS

August 12, 2026 at 9:40 PM

840-221-9766 was logged as a robocall. Violation date: August 12, 2026 at 6:53 PM.

FTC report from TENNESSEE

August 12, 2026 at 9:36 PM

840-221-8965 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 12, 2026 at 6:26 PM.

FTC report from Des Plaines, ILLINOIS

August 12, 2026 at 4:40 PM

840-248-2511 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 5, 2026 at 10:09 AM.

FTC report from MISSOURI

August 12, 2026 at 2:42 PM

840-300-3250 was logged as a robocall. Violation date: August 12, 2026 at 11:06 AM.

FTC report from Montrose, COLORADO

August 12, 2026 at 11:57 AM

This report was logged as a live voice. Violation date: August 11, 2026 at 9:07 AM.

FTC report from MISSOURI

August 11, 2026 at 5:24 PM

840-666-6649 was logged as a robocall. Violation date: August 11, 2026 at 1:28 PM.

FTC report from Live Oak, FLORIDA

August 11, 2026 at 3:25 PM

840-221-9169 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 7, 2026 at 4:39 PM.

FTC report from Versailles, KENTUCKY

August 11, 2026 at 3:24 PM

840-221-9572 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 11, 2026 at 3:16 PM.