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 184

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

Reports, 180 Days 654

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

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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 · 312 routing rows
  • T-MOBILE USA, INC. · 293 routing rows
  • NEW CINGULAR WIRELESS PCS, LLC · 282 routing rows
  • CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA · 198 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 · 22 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 KENTUCKY

September 17, 2026 at 9:29 PM

840-263-7932 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: September 17, 2026 at 9:12 PM.

FTC report from Sneads Ferry, NORTH CAROLINA

September 17, 2026 at 8:19 PM

840-234-5409 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 17, 2026 at 7:25 PM.

FTC report from Lancaster, CALIFORNIA

September 17, 2026 at 2:47 PM

840-242-2385 was logged as a live voice. Violation date: September 17, 2026 at 10:07 AM.

FTC report from Fontana, CALIFORNIA

September 17, 2026 at 2:37 PM

840-205-0648 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 16, 2026 at 2:06 PM.

FTC report from CALIFORNIA

September 17, 2026 at 2:22 PM

840-263-7132 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 16, 2026 at 3:20 PM.

FTC report from Mesquite, TEXAS

September 17, 2026 at 1:13 PM

840-221-9722 was logged as a robocall. Violation date: September 16, 2026 at 3:12 PM.

FTC report from Lancaster, CALIFORNIA

September 17, 2026 at 1:08 PM

840-242-2385 was logged as a live voice. Violation date: September 17, 2026 at 10:07 AM.

FTC report from GEORGIA

September 17, 2026 at 12:28 PM

840-263-7144 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 16, 2026 at 12:25 PM.

FTC report from Montebello, CALIFORNIA

September 17, 2026 at 12:23 PM

840-888-0095 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 17, 2026 at 1:20 PM.

FTC report from CALIFORNIA

September 16, 2026 at 2:28 PM

840-263-7620 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 8, 2026 at 5:22 PM.

FTC report from FLORIDA

September 16, 2026 at 1:36 PM

840-221-9367 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 16, 2026 at 1:19 PM.

FTC report from Springfield, ILLINOIS

September 16, 2026 at 10:24 AM

840-263-7491 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 16, 2026 at 8:28 AM.

FTC report from Bountiful, UTAH

September 16, 2026 at 10:19 AM

840-263-7104 was logged as a robocall. Violation date: September 15, 2026 at 6:30 PM.

FTC report from Tarentum, PENNSYLVANIA

September 16, 2026 at 9:31 AM

840-268-4607 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: September 15, 2026 at 2:55 PM.

FTC report from North Little Rock, ARKANSAS

September 15, 2026 at 11:47 PM

840-263-7753 was logged as a robocall. Violation date: September 15, 2026 at 5:27 PM.

FTC report from Riverview, FLORIDA

September 15, 2026 at 9:09 PM

840-263-7620 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 8, 2026 at 4:06 PM.

FTC report from San Diego, CALIFORNIA

September 15, 2026 at 6:37 PM

840-263-7620 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 8, 2026 at 6:56 PM.

FTC report from San Diego, CALIFORNIA

September 15, 2026 at 6:32 PM

840-263-7620 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 8, 2026 at 12:16 PM.

FTC report from San Diego, CALIFORNIA

September 15, 2026 at 6:28 PM

840-263-7620 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 8, 2026 at 6:24 AM.

FTC report from Little Ferry, NEW JERSEY

September 15, 2026 at 4:28 PM

840-877-7434 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 15, 2026 at 3:47 PM.

FTC report from Center Valley, PENNSYLVANIA

September 15, 2026 at 12:17 PM

840-300-3803 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 15, 2026 at 12:05 PM.

FTC report from Berlin, CALIFORNIA

September 15, 2026 at 1:45 AM

840-263-7620 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 8, 2026 at 7:47 PM.

FTC report from Pewaukee, WISCONSIN

September 14, 2026 at 8:40 PM

840-268-4607 was logged as a live voice. Violation date: September 14, 2026 at 12:00 AM.

FTC report from Colorado Springs, COLORADO

September 14, 2026 at 6:15 PM

840-205-3998 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: September 14, 2026 at 3:45 PM.

FTC report from Eden Prairie, MINNESOTA

September 14, 2026 at 5:17 PM

840-215-6018 was logged as a robocall. Violation date: September 14, 2026 at 7:21 PM.

FTC report from TEXAS

September 14, 2026 at 3:19 PM

840-268-6815 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 8, 2026 at 11:15 AM.

FTC report from Miami, FLORIDA

September 14, 2026 at 2:15 PM

840-688-2013 was logged as a robocall. Violation date: September 14, 2026 at 11:47 AM.

FTC report from ILLINOIS

September 14, 2026 at 11:55 AM

840-263-7232 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 11, 2026 at 8:07 PM.

FTC report from CALIFORNIA

September 14, 2026 at 10:48 AM

840-263-7283 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 14, 2026 at 6:57 AM.

FTC report from Superior, WISCONSIN

September 13, 2026 at 10:02 PM

840-275-7134 was logged as a robocall. Violation date: September 13, 2026 at 1:28 PM.

FTC report from Vass, NORTH CAROLINA

September 13, 2026 at 7:47 PM

840-468-1700 was logged as a robocall. Violation date: September 13, 2026 at 6:16 PM.

FTC report from Sun City West, ARIZONA

September 13, 2026 at 5:33 PM

840-206-4486 was logged as a live voice. Category: Lotteries, prizes & sweepstakes. Violation date: September 13, 2026 at 5:30 PM.

FTC report from Alpharetta, GEORGIA

September 12, 2026 at 9:22 PM

840-263-7084 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 12, 2026 at 7:37 PM.

FTC report from London, KENTUCKY

September 12, 2026 at 3:43 PM

840-268-4607 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: September 12, 2026 at 7:24 PM.

FTC report from ARIZONA

September 12, 2026 at 3:34 PM

840-263-7620 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 8, 2026 at 6:24 AM.

FTC report from ARIZONA

September 12, 2026 at 3:28 PM

840-263-7620 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 8, 2026 at 12:49 PM.

FTC report from Clifton Forge, VIRGINIA

September 11, 2026 at 2:07 PM

840-263-7620 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 8, 2026 at 2:45 AM.

FTC report from Austell, GEORGIA

September 11, 2026 at 12:15 PM

840-263-7620 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 8, 2026 at 1:18 PM.

FTC report from Denver, COLORADO

September 11, 2026 at 12:14 PM

840-263-7620 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 8, 2026 at 7:21 PM.

FTC report from Austell, GEORGIA

September 11, 2026 at 12:13 PM

840-263-7620 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: September 8, 2026 at 6:00 PM.