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 94

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

Reports, 180 Days 688

Broader complaint volume used to prioritize indexable pages.

Active Prefixes 144

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

Carriers / Assignees 22

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 · 324 routing rows
  • NEW CINGULAR WIRELESS PCS, LLC · 305 routing rows
  • T-MOBILE USA, INC. · 292 routing rows
  • CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA · 200 routing rows
  • COMMIO, LLC · 65 routing rows
  • FRACTEL, LLC · 62 routing rows
  • BANDWIDTH.COM CLEC, LLC - CA · 46 routing rows
  • ONVOY SPECTRUM, LLC · 44 routing rows
  • PEERLESS NETWORK OF CALIFORNIA, LLC - CA · 24 routing rows
  • TELNYX LLC · 19 routing rows
  • VONAGE AMERICA LLC · 11 routing rows
  • MULTIPLE OCN LISTING · 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
840-292-XXXX S BERNDINO San Bernardino CA
840-293-XXXX ETIWANDA Etiwanda CA
840-294-XXXX S BERNDINO San Bernardino CA
840-295-XXXX ONTARIO Ontario CA
840-296-XXXX CHINO Chino CA
840-299-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 Raleigh, NORTH CAROLINA

November 1, 2026 at 2:42 PM

840-666-6922 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 21, 2026 at 7:28 PM.

FTC report from GEORGIA

November 1, 2026 at 12:56 PM

840-222-2701 was logged as a live voice. Category: Dropped call or no message. Violation date: November 1, 2026 at 11:35 AM.

FTC report from Moreno Valley, CALIFORNIA

October 30, 2026 at 4:49 PM

840-333-2134 was logged as a robocall. Violation date: October 22, 2026 at 6:00 AM.

FTC report from CALIFORNIA

October 30, 2026 at 1:02 PM

840-282-9349 was logged as a robocall. Violation date: October 30, 2026 at 9:55 AM.

FTC report from Sarasota, FLORIDA

October 30, 2026 at 10:33 AM

840-688-2927 was logged as a live voice. Violation date: October 21, 2026 at 10:26 AM.

FTC report from Helena, ALABAMA

October 29, 2026 at 5:56 PM

840-899-9592 was logged as a robocall. Violation date: October 29, 2026 at 4:01 PM.

FTC report from Sacramento, CALIFORNIA

October 29, 2026 at 2:07 PM

840-221-9962 was logged as a live voice. Violation date: October 29, 2026 at 9:31 AM.

FTC report from Columbus, GEORGIA

October 29, 2026 at 12:32 PM

840-877-7923 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 29, 2026 at 12:30 PM.

FTC report from Tavares, FLORIDA

October 29, 2026 at 11:00 AM

840-500-0986 was logged as a robocall. Violation date: October 28, 2026 at 11:40 AM.

FTC report from Chester, SOUTH CAROLINA

October 28, 2026 at 3:33 PM

840-263-7325 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 28, 2026 at 2:27 PM.

FTC report from TEXAS

October 28, 2026 at 3:03 PM

840-336-8725 was logged as a robocall. Violation date: October 28, 2026 at 1:54 PM.

FTC report from NORTH CAROLINA

October 28, 2026 at 10:56 AM

840-842-1619 was logged as a robocall. Category: Medical & prescriptions. Violation date: October 28, 2026 at 12:00 PM.

FTC report from MISSISSIPPI

October 27, 2026 at 7:13 PM

840-345-6896 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 1, 2026 at 12:00 AM.

FTC report from Deltona, FLORIDA

October 27, 2026 at 5:09 PM

840-213-0157 was logged as a live voice. Violation date: October 27, 2026 at 4:45 PM.

FTC report from Savannah, GEORGIA

October 27, 2026 at 4:28 PM

840-200-0753 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 27, 2026 at 4:04 PM.

FTC report from FLORIDA

October 27, 2026 at 3:37 PM

840-336-8806 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 27, 2026 at 11:59 AM.

FTC report from Suisun City, CALIFORNIA

October 27, 2026 at 2:51 PM

840-268-6312 was logged as a live voice. Violation date: October 27, 2026 at 3:22 PM.

FTC report from Ocean View, NEW JERSEY

October 27, 2026 at 11:51 AM

840-218-1170 was logged as a live voice. Category: Warranties & protection plans. Violation date: October 27, 2026 at 10:31 AM.

FTC report from Stony Point, NEW YORK

October 26, 2026 at 7:22 PM

840-232-5918 was logged as a robocall. Violation date: October 26, 2026 at 6:22 PM.

FTC report from FLORIDA

October 26, 2026 at 7:07 PM

840-953-8420 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 20, 2026 at 12:00 AM.

FTC report from Springfield, ILLINOIS

October 26, 2026 at 5:27 PM

840-666-6698 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 26, 2026 at 2:16 PM.

FTC report from SOUTH DAKOTA

October 26, 2026 at 2:01 PM

840-233-6440 was logged as a robocall. Violation date: October 26, 2026 at 12:54 PM.

FTC report from Seagoville, TEXAS

October 26, 2026 at 12:31 PM

840-268-6857 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 23, 2026 at 9:56 AM.

FTC report from CALIFORNIA

October 23, 2026 at 8:43 PM

840-899-3775 was logged as a unwanted call. Violation date: October 23, 2026 at 2:07 PM.

FTC report from Muskogee, OKLAHOMA

October 23, 2026 at 7:25 PM

840-275-7183 was logged as a robocall. Category: Work from home & other ways to make money. Violation date: October 23, 2026 at 10:21 AM.

FTC report from Evergreen, COLORADO

October 23, 2026 at 5:59 PM

840-466-6165 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: March 6, 2026 at 5:54 PM.

FTC report from Coventry, RHODE ISLAND

October 23, 2026 at 5:52 PM

840-688-2419 was logged as a robocall. Category: No Subject Provided. Violation date: October 23, 2026 at 1:58 PM.

FTC report from HAWAII

October 23, 2026 at 5:06 PM

840-688-2995 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 19, 2026 at 12:59 AM.

FTC report from LOUISIANA

October 23, 2026 at 4:09 PM

840-223-9990 was logged as a robocall. Violation date: October 9, 2026 at 4:38 PM.

FTC report from Chino Hills, CALIFORNIA

October 23, 2026 at 12:22 PM

840-282-9129 was logged as a robocall. Violation date: October 22, 2026 at 12:00 PM.

FTC report from MISSOURI

October 23, 2026 at 12:20 PM

840-500-0245 was logged as a live voice. Violation date: October 2, 2026 at 4:05 PM.

FTC report from Chino Hills, Ca, CALIFORNIA

October 23, 2026 at 11:52 AM

840-282-9129 was logged as a robocall. Violation date: October 22, 2026 at 11:42 AM.

FTC report from Pomona, CALIFORNIA

October 23, 2026 at 11:32 AM

840-888-0584 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 23, 2026 at 8:21 AM.

FTC report from WASHINGTON

October 22, 2026 at 8:02 PM

840-215-5696 was logged as a robocall. Violation date: October 14, 2026 at 9:51 AM.

FTC report from WASHINGTON

October 22, 2026 at 8:00 PM

840-215-5696 was logged as a robocall. Violation date: October 14, 2026 at 9:51 AM.

FTC report from CALIFORNIA

October 22, 2026 at 7:40 PM

840-444-4807 was logged as a robocall. Violation date: October 22, 2026 at 2:12 PM.

FTC report from TEXAS

October 22, 2026 at 8:41 AM

840-400-0421 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 21, 2026 at 3:48 PM.

FTC report from Kingman, ARIZONA

October 21, 2026 at 9:45 PM

840-263-3253 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 21, 2026 at 7:01 AM.

FTC report from Katy, TEXAS

October 21, 2026 at 7:57 PM

840-275-7184 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 21, 2026 at 6:13 PM.

FTC report from Norco, LOUISIANA

October 21, 2026 at 5:49 PM

840-232-5734 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 21, 2026 at 8:30 PM.