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 122

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

Reports, 180 Days 671

Broader complaint volume used to prioritize indexable pages.

Active Prefixes 140

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

Search a phone number, area code, exchange, or short code

Paste raw digits, a formatted phone number, an area code, an NPA-NXX block, or a short code. US and Canada phone lookups route automatically, and international iMessage checks are available separately.

Phone LookupTop ComplaintsArea CodesNPA-NXXiMessage
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 · 311 routing rows
  • T-MOBILE USA, INC. · 293 routing rows
  • NEW CINGULAR WIRELESS PCS, LLC · 282 routing rows
  • CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA · 197 routing rows
  • COMMIO, LLC · 65 routing rows
  • FRACTEL, LLC · 63 routing rows
  • ONVOY SPECTRUM, LLC · 48 routing rows
  • BANDWIDTH.COM CLEC, LLC - CA · 46 routing rows
  • PEERLESS NETWORK OF CALIFORNIA, LLC - CA · 24 routing rows
  • TELNYX LLC · 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
840-292-XXXX S BERNDINO San Bernardino CA
840-293-XXXX ETIWANDA Etiwanda 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 New Egypt, NEW JERSEY

October 8, 2026 at 6:50 PM

840-236-9964 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 8, 2026 at 6:05 PM.

FTC report from Sarasota, FLORIDA

October 8, 2026 at 2:57 PM

840-221-9796 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 8, 2026 at 7:34 AM.

FTC report from Sarasota, FLORIDA

October 8, 2026 at 12:11 PM

840-221-9796 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 8, 2026 at 7:34 AM.

FTC report from NORTH CAROLINA

October 7, 2026 at 7:13 PM

840-263-7325 was logged as a unwanted call. Category: No Subject Provided. Violation date: October 6, 2026 at 12:00 AM.

FTC report from Chicago, ILLINOIS

October 7, 2026 at 6:33 PM

840-465-8602 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 5, 2026 at 7:45 PM.

FTC report from Cumming, GEORGIA

October 7, 2026 at 6:23 PM

840-788-8227 was logged as a robocall. Violation date: September 25, 2026 at 12:17 PM.

FTC report from Ventura, CALIFORNIA

October 7, 2026 at 3:59 PM

840-222-1917 was logged as a robocall. Category: Dropped call or no message. Violation date: October 7, 2026 at 12:58 PM.

FTC report from CALIFORNIA

October 7, 2026 at 12:53 PM

840-246-7351 was logged as a robocall. Violation date: October 1, 2026 at 7:01 PM.

FTC report from NEW JERSEY

October 7, 2026 at 12:36 PM

840-336-8375 was logged as a robocall. Category: No Subject Provided. Violation date: October 2, 2026 at 10:36 AM.

FTC report from Alexandria, VIRGINIA

October 6, 2026 at 8:34 PM

840-899-9265 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 25, 2026 at 9:04 AM.

FTC report from Belmont, CALIFORNIA

October 6, 2026 at 6:44 PM

840-699-9652 was logged as a robocall. Violation date: October 6, 2026 at 1:55 PM.

FTC report from Los Angeles, CALIFORNIA

October 6, 2026 at 6:22 PM

840-800-1145 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 6, 2026 at 12:00 PM.

FTC report from Killen, ALABAMA

October 6, 2026 at 4:31 PM

840-216-7723 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 6, 2026 at 7:24 PM.

FTC report from Rochester, NEW YORK

October 6, 2026 at 1:25 PM

840-300-0797 was logged as a robocall. Violation date: October 1, 2026 at 10:34 AM.

FTC report from Los, CALIFORNIA

October 6, 2026 at 12:48 PM

840-244-4687 was logged as a live voice. Category: Home improvement & cleaning. Violation date: October 6, 2026 at 9:47 AM.

FTC report from FLORIDA

October 6, 2026 at 10:57 AM

840-232-6545 was logged as a robocall. Violation date: October 6, 2026 at 10:52 AM.

FTC report from CONNECTICUT

October 6, 2026 at 10:09 AM

840-221-9548 was logged as a robocall. Violation date: October 6, 2026 at 9:45 AM.

FTC report from Darlington, SOUTH CAROLINA

October 6, 2026 at 4:40 AM

840-228-6739 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 5, 2026 at 12:00 PM.

FTC report from Miami, FLORIDA

October 4, 2026 at 1:37 PM

840-221-9703 was logged as a robocall. Violation date: October 1, 2026 at 10:55 AM.

FTC report from Portsmouth, VIRGINIA

October 3, 2026 at 12:42 PM

840-221-9756 was logged as a live voice. Violation date: September 29, 2026 at 9:39 AM.

FTC report from Jonesboro, ARKANSAS

October 3, 2026 at 9:51 AM

840-233-6857 was logged as a robocall. Violation date: October 1, 2026 at 7:45 PM.

FTC report from Chattanooga, TENNESSEE

October 3, 2026 at 8:57 AM

840-221-8854 was logged as a live voice. Violation date: September 30, 2026 at 11:11 AM.

FTC report from MICHIGAN

October 3, 2026 at 5:30 AM

840-666-6535 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 2, 2026 at 3:36 PM.

FTC report from NEW JERSEY

October 2, 2026 at 9:07 PM

840-200-0779 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 2, 2026 at 4:55 PM.

FTC report from Rock Island, FLORIDA

October 2, 2026 at 8:25 PM

840-221-8773 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 2, 2026 at 7:17 PM.

FTC report from OREGON

September 30, 2026 at 7:46 PM

840-251-6799 was logged as a robocall. Violation date: September 25, 2026 at 10:27 AM.

FTC report from Columbia, SOUTH CAROLINA

September 30, 2026 at 6:23 PM

840-237-3511 was logged as a live voice. Violation date: September 30, 2026 at 5:06 PM.

FTC report from Mesa, ARIZONA

September 30, 2026 at 12:49 PM

840-201-1857 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 30, 2026 at 9:37 AM.

FTC report from OHIO

September 30, 2026 at 12:06 PM

840-777-9759 was logged as a robocall. Category: No Subject Provided. Violation date: September 30, 2026 at 11:07 AM.

FTC report from CALIFORNIA

September 30, 2026 at 11:06 AM

840-200-9302 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: September 30, 2026 at 8:05 AM.

FTC report from NEW YORK

September 30, 2026 at 10:54 AM

840-261-0740 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: September 30, 2026 at 10:49 AM.

FTC report from Daytona, FLORIDA

September 30, 2026 at 10:19 AM

840-222-2298 was logged as a robocall. Violation date: September 24, 2026 at 12:50 PM.

FTC report from Patna, INDIANA

September 30, 2026 at 2:44 AM

840-986-2085 was logged as a robocall. Category: Work from home & other ways to make money. Violation date: September 30, 2026 at 4:02 PM.

FTC report from ARIZONA

September 29, 2026 at 5:41 PM

840-217-5250 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: September 29, 2026 at 9:57 AM.

FTC report from Duncanville, TEXAS

September 29, 2026 at 4:50 PM

840-221-8923 was logged as a robocall. Violation date: September 29, 2026 at 3:44 PM.

FTC report from Lancaster, PENNSYLVANIA

September 29, 2026 at 3:14 PM

840-221-9719 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 28, 2026 at 1:12 PM.

FTC report from Port St Lucie, FLORIDA

September 29, 2026 at 11:46 AM

840-221-9235 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 29, 2026 at 12:00 AM.

FTC report from NORTH CAROLINA

September 29, 2026 at 10:53 AM

840-268-6770 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 29, 2026 at 10:33 AM.

FTC report from Silver Springs, NEVADA

September 28, 2026 at 9:02 PM

840-899-9664 was logged as a robocall. Violation date: September 28, 2026 at 5:01 PM.

FTC report from Tuscaloosa, ALABAMA

September 28, 2026 at 2:51 PM

840-206-3166 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: September 23, 2026 at 12:00 PM.