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 63

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

Reports, 180 Days 606

Broader complaint volume used to prioritize indexable pages.

Active Prefixes 135

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

  • T-MOBILE USA, INC. · 302 routing rows
  • NEW CINGULAR WIRELESS PCS, LLC · 265 routing rows
  • ONVOY, LLC - CA · 257 routing rows
  • CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA · 209 routing rows
  • FRACTEL, LLC · 65 routing rows
  • COMMIO, LLC · 65 routing rows
  • BANDWIDTH.COM CLEC, LLC - CA · 46 routing rows
  • ONVOY SPECTRUM, LLC · 43 routing rows
  • TELNYX LLC · 19 routing rows
  • PEERLESS NETWORK OF CALIFORNIA, LLC - CA · 13 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 VIRGINIA

June 14, 2026 at 9:19 AM

840-210-0967 was logged as a robocall. Category: No Subject Provided. Violation date: June 12, 2026 at 12:00 AM.

FTC report from CALIFORNIA

June 14, 2026 at 2:41 AM

840-200-0528 was logged as a robocall. Violation date: June 13, 2026 at 9:06 AM.

FTC report from COLORADO

June 12, 2026 at 5:50 PM

840-260-8431 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: June 1, 2026 at 12:00 AM.

FTC report from Tulsa, OKLAHOMA

June 12, 2026 at 5:03 PM

840-221-8824 was logged as a robocall. Violation date: June 12, 2026 at 12:54 PM.

FTC report from VIRGINIA

June 12, 2026 at 3:34 PM

840-210-0967 was logged as a robocall. Category: No Subject Provided. Violation date: June 12, 2026 at 12:00 AM.

FTC report from VIRGINIA

June 12, 2026 at 3:33 PM

840-210-0967 was logged as a robocall. Category: No Subject Provided. Violation date: June 11, 2026 at 12:00 AM.

FTC report from Allentown, PENNSYLVANIA

June 12, 2026 at 2:31 PM

840-466-6705 was logged as a live voice. Violation date: June 12, 2026 at 2:17 PM.

FTC report from Indianapolis, INDIANA

June 12, 2026 at 8:36 AM

840-999-1901 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: June 11, 2026 at 2:35 PM.

FTC report from COLORADO

June 8, 2026 at 6:08 PM

840-223-5328 was logged as a live voice. Violation date: June 8, 2026 at 3:22 PM.

FTC report from Farmington, MICHIGAN

June 8, 2026 at 4:41 PM

840-221-8925 was logged as a robocall. Violation date: June 8, 2026 at 4:09 PM.

FTC report from Conyers, GEORGIA

June 8, 2026 at 2:48 PM

840-837-4084 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: June 8, 2026 at 2:47 PM.

FTC report from Hudson, FLORIDA

June 8, 2026 at 1:30 PM

840-444-5292 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: June 8, 2026 at 1:24 PM.

FTC report from ILLINOIS

June 8, 2026 at 12:39 PM

840-245-9060 was logged as a live voice. Violation date: June 8, 2026 at 12:00 AM.

FTC report from Jacksonville, FLORIDA

June 7, 2026 at 7:22 PM

840-837-4031 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: June 6, 2026 at 4:00 PM.

FTC report from PENNSYLVANIA

June 7, 2026 at 2:54 PM

840-837-4915 was logged as a robocall. Violation date: June 7, 2026 at 12:02 PM.

FTC report from Savannah, GEORGIA

June 5, 2026 at 3:39 PM

840-861-7412 was logged as a robocall. Violation date: June 2, 2026 at 9:00 AM.

FTC report from NEW YORK

June 5, 2026 at 1:09 PM

840-210-0803 was logged as a robocall. Category: No Subject Provided. Violation date: June 5, 2026 at 12:17 PM.

FTC report from Rancho Cucamonga, CALIFORNIA

June 4, 2026 at 5:41 PM

840-218-5609 was logged as a robocall. Category: Vacation & timeshares. Violation date: June 4, 2026 at 2:30 PM.

FTC report from Montgomery, ALABAMA

June 4, 2026 at 3:46 PM

840-666-6254 was logged as a unwanted call. Violation date: June 1, 2026 at 3:30 PM.

FTC report from FLORIDA

June 4, 2026 at 11:55 AM

840-466-6075 was logged as a robocall. Violation date: June 3, 2026 at 10:56 AM.

FTC report from Louisville, KENTUCKY

June 4, 2026 at 11:15 AM

840-837-4151 was logged as a robocall. Violation date: June 4, 2026 at 11:12 AM.

FTC report from Chelmsford, MASSACHUSETTS

June 4, 2026 at 11:13 AM

840-221-9200 was logged as a robocall. Violation date: June 1, 2026 at 9:07 AM.

FTC report from Stuart, FLORIDA

June 3, 2026 at 10:18 PM

840-260-8473 was logged as a robocall. Category: Dropped call or no message. Violation date: June 2, 2026 at 2:08 PM.

FTC report from FLORIDA

June 3, 2026 at 7:57 PM

840-219-1890 was logged as a robocall. Violation date: June 2, 2026 at 4:28 PM.

FTC report from CALIFORNIA

June 3, 2026 at 3:27 PM

840-209-4276 was logged as a robocall. Category: No Subject Provided. Violation date: April 30, 2026 at 3:05 PM.

FTC report from Little Silver, NEW JERSEY

June 2, 2026 at 3:06 PM

840-466-6193 was logged as a unwanted call. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: June 1, 2026 at 10:00 AM.

FTC report from Columbiana, ALABAMA

June 1, 2026 at 4:53 PM

840-221-8787 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: June 1, 2026 at 4:38 PM.

FTC report from Kalamazoo, MICHIGAN

June 1, 2026 at 4:04 PM

840-837-4578 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: June 1, 2026 at 12:54 PM.

FTC report from Davenport, FLORIDA

May 31, 2026 at 2:58 PM

840-336-8964 was logged as a robocall. Violation date: May 29, 2026 at 7:13 PM.

FTC report from Culloden, WEST VIRGINIA

May 30, 2026 at 3:35 PM

840-221-9688 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: May 30, 2026 at 2:54 PM.

FTC report from CALIFORNIA

May 29, 2026 at 6:58 PM

840-837-4302 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: May 27, 2026 at 5:14 PM.

FTC report from CALIFORNIA

May 29, 2026 at 3:05 PM

840-206-6653 was logged as a robocall. Category: No Subject Provided. Violation date: May 29, 2026 at 12:03 PM.

FTC report from Lakewood, COLORADO

May 27, 2026 at 8:45 PM

840-219-1799 was logged as a robocall. Violation date: May 27, 2026 at 12:00 AM.

FTC report from Benton, KENTUCKY

May 27, 2026 at 6:38 PM

840-221-9578 was logged as a robocall. Violation date: May 27, 2026 at 4:34 PM.

FTC report from Galloway, NEW JERSEY

May 27, 2026 at 6:09 PM

840-466-6217 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: May 27, 2026 at 6:06 PM.

FTC report from TEXAS

May 27, 2026 at 4:35 PM

840-219-1793 was logged as a unwanted call. Category: No Subject Provided. Violation date: May 26, 2026 at 2:46 PM.

FTC report from Lancaster, CALIFORNIA

May 27, 2026 at 2:51 PM

840-300-3531 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: May 27, 2026 at 10:29 AM.

FTC report from Oklahoma, OKLAHOMA

May 26, 2026 at 7:24 PM

840-680-7537 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: May 25, 2026 at 8:06 PM.

FTC report from CALIFORNIA

May 26, 2026 at 3:12 PM

840-206-6653 was logged as a unwanted call. Category: Computer & technical support. Violation date: May 26, 2026 at 12:11 PM.

FTC report from Merced, CALIFORNIA

May 26, 2026 at 2:14 PM

840-253-2811 was logged as a robocall. Violation date: May 26, 2026 at 8:12 AM.