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 85

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

Reports, 180 Days 623

Broader complaint volume used to prioritize indexable pages.

Active Prefixes 135

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

  • T-MOBILE USA, INC. · 300 routing rows
  • NEW CINGULAR WIRELESS PCS, LLC · 266 routing rows
  • ONVOY, LLC - CA · 261 routing rows
  • CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA · 209 routing rows
  • COMMIO, LLC · 65 routing rows
  • FRACTEL, LLC · 64 routing rows
  • BANDWIDTH.COM CLEC, LLC - CA · 47 routing rows
  • ONVOY SPECTRUM, LLC · 44 routing rows
  • TELNYX LLC · 19 routing rows
  • PEERLESS NETWORK OF CALIFORNIA, LLC - CA · 15 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
840-300-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 CALIFORNIA

July 9, 2026 at 7:26 PM

840-221-9026 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: July 9, 2026 at 4:06 PM.

FTC report from CALIFORNIA

July 9, 2026 at 4:57 PM

840-877-9597 was logged as a live voice. Violation date: July 9, 2026 at 1:52 PM.

FTC report from Malvern, PENNSYLVANIA

July 9, 2026 at 3:40 PM

840-219-1681 was logged as a robocall. Violation date: July 7, 2026 at 12:00 AM.

FTC report from FLORIDA

July 9, 2026 at 3:24 PM

840-219-1679 was logged as a live voice. Violation date: July 9, 2026 at 3:07 PM.

FTC report from Davie, FLORIDA

July 9, 2026 at 12:51 PM

840-219-1647 was logged as a robocall. Violation date: July 7, 2026 at 1:33 PM.

FTC report from Aubrey, TEXAS

July 8, 2026 at 4:41 PM

840-300-3839 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: July 8, 2026 at 3:40 PM.

FTC report from Surfside Beach, SOUTH CAROLINA

July 8, 2026 at 2:34 PM

840-221-8935 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: July 8, 2026 at 10:36 AM.

FTC report from Santa Ana, CALIFORNIA

July 7, 2026 at 8:01 PM

840-218-5935 was logged as a robocall. Category: Dropped call or no message. Violation date: July 6, 2026 at 6:11 PM.

FTC report from Lawrenceville, GEORGIA

July 7, 2026 at 3:14 PM

840-219-1972 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: July 7, 2026 at 10:08 AM.

FTC report from ALABAMA

July 7, 2026 at 2:36 PM

840-210-0674 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: July 7, 2026 at 12:54 PM.

FTC report from Salem, NEW HAMPSHIRE

July 6, 2026 at 5:01 PM

840-210-0852 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: July 6, 2026 at 4:48 PM.

FTC report from GEORGIA

July 6, 2026 at 3:57 PM

840-210-0819 was logged as a unwanted call. Category: No Subject Provided. Violation date: July 6, 2026 at 3:45 PM.

FTC report from Elk City, OKLAHOMA

July 6, 2026 at 2:46 PM

840-221-9129 was logged as a robocall. Violation date: July 3, 2026 at 11:48 AM.

FTC report from San Francisco, CALIFORNIA

July 3, 2026 at 2:23 PM

840-677-0163 was logged as a robocall. Violation date: June 20, 2023 at 4:05 PM.

FTC report from F, FLORIDA

July 3, 2026 at 1:08 PM

840-221-9335 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: July 3, 2026 at 12:25 PM.

FTC report from Sacramento, CALIFORNIA

July 3, 2026 at 12:02 PM

840-214-4535 was logged as a live voice. Violation date: July 3, 2026 at 8:54 AM.

FTC report from Wilmington, DELAWARE

July 3, 2026 at 1:07 AM

840-222-2941 was logged as a unwanted call. Violation date: July 2, 2026 at 9:17 PM.

FTC report from INDIANA

July 2, 2026 at 4:15 PM

840-356-7508 was logged as a live voice. Violation date: June 18, 2026 at 9:39 AM.

FTC report

July 1, 2026 at 7:06 PM

840-212-2884 was logged as a live voice. Violation date: July 1, 2026 at 6:01 PM.

FTC report from West St. Paul, MINNESOTA

July 1, 2026 at 5:49 PM

840-221-9550 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: June 26, 2026 at 7:14 PM.

FTC report from West St. Paul, MINNESOTA

July 1, 2026 at 5:47 PM

840-221-9421 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: June 25, 2026 at 7:00 PM.

FTC report from San Pierre, INDIANA

July 1, 2026 at 2:36 PM

840-837-4928 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: July 1, 2026 at 12:45 PM.

FTC report from CALIFORNIA

July 1, 2026 at 1:39 PM

840-212-3817 was logged as a robocall. Category: No Subject Provided. Violation date: June 29, 2026 at 12:13 PM.

FTC report

June 30, 2026 at 7:18 PM

840-212-2615 was logged as a live voice. Violation date: June 30, 2026 at 11:41 AM.

FTC report from KENTUCKY

June 30, 2026 at 6:34 PM

840-221-6872 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: June 9, 2026 at 8:03 PM.

FTC report from Santa Fe, NEW MEXICO

June 30, 2026 at 5:22 PM

840-837-4134 was logged as a robocall. Violation date: June 30, 2026 at 12:00 AM.

FTC report from Santa Fe, NEW MEXICO

June 30, 2026 at 5:21 PM

840-837-4134 was logged as a robocall. Violation date: June 30, 2026 at 12:00 AM.

FTC report from CALIFORNIA

June 30, 2026 at 4:36 PM

840-201-4527 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: June 30, 2026 at 2:50 PM.

FTC report from Washington, NEW JERSEY

June 30, 2026 at 11:20 AM

840-221-9151 was logged as a live voice. Violation date: June 30, 2026 at 12:00 AM.

FTC report from Melbourne, FLORIDA

June 29, 2026 at 3:33 PM

840-221-9558 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: June 29, 2026 at 3:19 PM.

FTC report from Irvine, CALIFORNIA

June 29, 2026 at 2:47 PM

840-212-2906 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: June 29, 2026 at 8:35 AM.

FTC report from Sewell, NEW JERSEY

June 29, 2026 at 9:42 AM

840-837-4085 was logged as a robocall. Violation date: June 27, 2026 at 11:56 AM.

FTC report from GEORGIA

June 29, 2026 at 1:00 AM

840-221-8797 was logged as a live voice. Violation date: June 27, 2026 at 3:11 PM.

FTC report from Brunswick, MARYLAND

June 27, 2026 at 5:07 PM

840-221-8892 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: June 27, 2026 at 10:32 AM.

FTC report from Orange Park, FLORIDA

June 27, 2026 at 10:50 AM

840-221-9138 was logged as a robocall. Violation date: June 26, 2026 at 3:27 PM.

FTC report from Carrollton, GEORGIA

June 27, 2026 at 10:49 AM

840-221-9189 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: June 27, 2026 at 10:45 AM.

FTC report from TEXAS

June 26, 2026 at 8:49 PM

840-219-1987 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: June 26, 2026 at 3:42 PM.

FTC report from Lapeer, MICHIGAN

June 26, 2026 at 12:12 PM

840-837-4870 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: June 26, 2026 at 11:29 AM.

FTC report from CALIFORNIA

June 25, 2026 at 3:46 PM

840-209-3490 was logged as a live voice. Category: Dropped call or no message. Violation date: May 8, 2026 at 7:46 PM.

FTC report from TENNESSEE

June 25, 2026 at 3:41 PM

840-221-9010 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: June 25, 2026 at 10:06 AM.