phone.gd North American phone lookup, short codes, caller signals, and complaint-driven research.
Area Code Detail

Area Code 837

California (Redding, Auburn, Chico, Davis, the California shore of Lake Tahoe, Placerville, Susanville, Truckee, Yreka, and most of northeastern California) · In service since January 31, 2025

CA
Reports, 30 Days 4

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

Reports, 180 Days 17

Broader complaint volume used to prioritize indexable pages.

Active Prefixes 14

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

Carriers / Assignees 1

Named carriers, assignees, or code holders found in routing data.

Cities / Rate Centers 0

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
Examples: 206-739-5800, 206, 206-739, 48369
Overview

What this area code covers

California (Redding, Auburn, Chico, Davis, the California shore of Lake Tahoe, Placerville, Susanville, Truckee, Yreka, and most of northeastern California)

to be overlaid on 530 California's 40th area code

Top carriers and assignees

  • MULTIPLE OCN LISTING · 14 routing rows
NPA-NXX

Prefix directory inside area code 837

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
837-211-XXXX XXXXXXXXXX CA
837-311-XXXX XXXXXXXXXX CA
837-411-XXXX XXXXXXXXXX CA
837-511-XXXX XXXXXXXXXX CA
837-555-XXXX DIR ASST CA
837-611-XXXX XXXXXXXXXX CA
837-700-XXXX XXXXXXXXXX CA
837-711-XXXX XXXXXXXXXX CA
837-811-XXXX XXXXXXXXXX CA
837-911-XXXX XXXXXXXXXX CA
837-950-XXXX XXXXXXXXXX CA
837-958-XXXX XXXXXXXXXX CA
837-959-XXXX XXXXXXXXXX CA
837-976-XXXX XXXXXXXXXX CA
Recent Signals

Latest complaint activity tied to 837

Complaint pages are the strongest indexing opportunity for this site right now, especially for exact phone numbers and toll-free exchanges.

FTC report from Ronkonkoma, NEW YORK

April 10, 2026 at 8:11 PM

This report was logged as a live voice. Violation date: April 10, 2026 at 8:05 PM.

FTC report from Eden Prairie, MINNESOTA

April 9, 2026 at 6:07 PM

837-900-3721 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: April 8, 2026 at 5:38 PM.

FTC report from Cumming, GEORGIA

April 8, 2026 at 11:40 AM

This report was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: April 6, 2026 at 10:59 AM.

FTC report from Glen Burnie, MARYLAND

April 7, 2026 at 9:04 PM

This report was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: April 7, 2026 at 4:29 PM.

FTC report from Huntsville, ALABAMA

March 13, 2026 at 3:31 PM

This report was logged as a robocall. Violation date: March 12, 2026 at 5:25 PM.

FTC report from Naples, FLORIDA

March 11, 2026 at 3:26 PM

This report was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: March 11, 2026 at 11:54 AM.

FTC report from Grand Ledge, MICHIGAN

February 23, 2026 at 8:25 AM

837-820-9074 was logged as a live voice. Violation date: February 9, 2026 at 11:46 AM.

FTC report from Hampton, NEW HAMPSHIRE

February 9, 2026 at 6:55 PM

This report was logged as a robocall. Violation date: February 9, 2026 at 6:45 PM.

FTC report from Clearwater, FLORIDA

February 2, 2026 at 2:12 PM

This report was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: January 5, 2026 at 2:11 PM.

FTC report from Palisade, COLORADO

January 20, 2026 at 11:48 PM

This report was logged as a robocall. Violation date: January 20, 2026 at 3:28 PM.

FTC report from Roselle, ILLINOIS

January 19, 2026 at 6:42 PM

This report was logged as a live voice. Violation date: January 19, 2026 at 3:23 PM.

FTC report from ILLINOIS

January 14, 2026 at 3:36 PM

837-325-0175 was logged as a robocall. Category: No Subject Provided. Violation date: January 14, 2026 at 1:00 AM.

FTC report from Fairborn, OHIO

January 5, 2026 at 11:09 AM

837-899-7660 was logged as a live voice. Violation date: January 5, 2026 at 10:44 AM.

FTC report from New Delhi, DELAWARE

December 19, 2025 at 1:49 AM

837-699-2873 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: December 19, 2025 at 11:57 AM.

FTC report from Mansfield, OHIO

December 3, 2025 at 10:59 AM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: December 3, 2025 at 9:40 AM.

FTC report from Mansfield, OHIO

December 2, 2025 at 11:08 AM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: December 2, 2025 at 12:00 AM.

FTC report from Egg Harbor Twp., NEW JERSEY

November 20, 2025 at 10:54 AM

837-487-2703 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: November 19, 2025 at 12:00 AM.

FTC report from Adams, NEBRASKA

September 4, 2025 at 2:57 PM

837-487-2577 was logged as a robocall. Violation date: September 4, 2025 at 1:53 PM.

FTC report from ILLINOIS

August 22, 2025 at 7:53 PM

837-390-1600 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 22, 2025 at 10:19 AM.

FCC report from Birmingham, AL

August 12, 2025 at 3:12 PM

837-795-5753 was logged as a prerecorded voice. Unwanted Calls. Contact method: Wired.

FTC report from Albuquerque, NEW MEXICO

August 8, 2025 at 9:28 AM

837-487-2544 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 7, 2025 at 9:20 AM.

FTC report from VIRGINIA

July 9, 2025 at 10:18 AM

837-777-1883 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: July 9, 2025 at 10:15 AM.

FTC report from Mechanicsville, MARYLAND

June 4, 2025 at 8:51 AM

837-289-8620 was logged as a robocall. Violation date: May 20, 2025 at 12:00 AM.

FTC report from Cincinnati, OHIO

May 19, 2025 at 5:25 PM

837-385-0995 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: May 19, 2025 at 4:02 PM.

FTC report from MISSISSIPPI

May 16, 2025 at 10:00 AM

837-646-9548 was logged as a live voice. Category: Home improvement & cleaning. Violation date: May 16, 2025 at 8:45 AM.

FTC report from WASHINGTON

May 7, 2025 at 4:42 PM

837-040-0462 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: May 7, 2025 at 2:21 PM.

FTC report from Las Vegas, NEVADA

May 6, 2025 at 8:58 PM

This report was logged as a robocall. Violation date: May 6, 2025 at 5:51 PM.

FTC report from CALIFORNIA

April 16, 2025 at 5:52 PM

837-388-9392 was logged as a live voice. Violation date: April 16, 2025 at 2:48 PM.

FTC report from FLORIDA

April 2, 2025 at 10:35 PM

This report was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: April 2, 2025 at 10:31 AM.

FTC report from Bakersfield, CALIFORNIA

March 22, 2025 at 9:27 PM

This report was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: March 21, 2025 at 5:15 AM.

FTC report from Fruitland Park, FLORIDA

March 16, 2025 at 7:14 PM

This report was logged as a live voice. Violation date: March 10, 2025 at 4:19 PM.

FTC report from MISSOURI

March 12, 2025 at 10:50 AM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: March 12, 2025 at 9:46 AM.

FTC report from Spokane Valley, ILLINOIS

February 26, 2025 at 5:00 PM

837-226-0203 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: February 26, 2025 at 10:20 AM.

FTC report from Las Vegas, NEVADA

February 10, 2025 at 11:25 AM

This report was logged as a robocall. Category: Vacation & timeshares. Violation date: February 10, 2025 at 7:28 AM.

FTC report from Bronx, NEW YORK

February 1, 2025 at 6:09 PM

837-733-6584 was logged as a robocall. Violation date: January 31, 2024 at 11:08 AM.

FTC report from Test, CALIFORNIA

January 30, 2025 at 9:37 PM

837-444-5555 was logged as a live voice. Violation date: January 8, 2025 at 9:15 PM.

FTC report from CALIFORNIA

January 30, 2025 at 9:36 PM

837-772-9722 was logged as a robocall. Category: No Subject Provided. Violation date: January 1, 2025 at 12:00 AM.

FTC report from Greenville, SOUTH CAROLINA

January 22, 2025 at 2:46 PM

This report was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: January 4, 2025 at 9:01 AM.

FTC report from Georgetown, KENTUCKY

January 10, 2025 at 12:30 PM

837-914-0249 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: January 10, 2025 at 11:20 AM.

FTC report from Visalia, CALIFORNIA

November 23, 2024 at 6:24 PM

This report was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: November 20, 2024 at 12:12 PM.