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Area Code Detail

Area Code 666

North American numbering plan area

Reports, 30 Days 2

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

Reports, 180 Days 15

Broader complaint volume used to prioritize indexable pages.

Active Prefixes 7

Distinct NPA-NXX exchanges surfaced from routing and complaint data.

Carriers / Assignees 0

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 0

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

Regional coverage varies across the NANP data sources on this site.

NPA-NXX

Strongest exchanges inside area code 666

These prefixes combine recent complaint concentration with routing or assignment density, which makes them good candidates for indexing and exploration.

Prefix Complaint Score Routing Rows Companies Cities
666-706 12 0 0 0
666-228 4 0 0 0
666-396 4 0 0 0
666-444 4 0 0 0
666-662 4 0 0 0
666-777 4 0 0 0
666-896 4 0 0 0
Recent Signals

Latest complaint activity tied to 666

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

FTC report from Buckhannon, WEST VIRGINIA

March 16, 2026 at 9:33 AM

666-706-3382 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: March 16, 2026 at 9:30 AM.

FTC report from San Diego, CALIFORNIA

March 12, 2026 at 9:00 PM

666-444-7450 was logged as a live voice. Category: No Subject Provided. Violation date: March 12, 2026 at 10:24 AM.

FTC report from Ukiah, CALIFORNIA

February 25, 2026 at 1:58 PM

666-706-6770 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: February 25, 2026 at 10:52 AM.

FTC report from Louisville, MISSISSIPPI

February 19, 2026 at 1:21 PM

666-662-6494 was logged as a robocall. Category: No Subject Provided. Violation date: February 19, 2026 at 9:32 AM.

FTC report from Cypress, TEXAS

February 17, 2026 at 11:02 PM

This report was logged as a live voice. Violation date: June 25, 2025 at 12:00 PM.

FTC report from WYOMING

January 20, 2026 at 8:12 PM

This report was logged as a unwanted call. Violation date: January 20, 2026 at 4:39 PM.

FTC report from Butler, MISSOURI

January 20, 2026 at 5:04 PM

666-896-0728 was logged as a robocall. Category: Medical & prescriptions. Violation date: January 20, 2026 at 1:06 PM.

FTC report from Nashville, NORTH CAROLINA

January 19, 2026 at 2:06 PM

This report was logged as a live voice. Violation date: January 12, 2026 at 2:00 PM.

FTC report from Gastonia, NORTH CAROLINA

January 6, 2026 at 7:25 PM

666-228-2146 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: January 6, 2026 at 7:18 PM.

FTC report from Scarborough, MAINE

December 29, 2025 at 7:30 PM

666-777-8401 was logged as a live voice. Violation date: December 29, 2025 at 4:31 PM.

FTC report from Saint Cloud, FLORIDA

December 17, 2025 at 3:44 PM

This report was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: December 17, 2025 at 2:44 PM.

FTC report from Buckeye, ARIZONA

December 16, 2025 at 6:28 PM

666-706-4724 was logged as a robocall. Violation date: December 16, 2025 at 4:26 PM.

FTC report from Dubuque, IOWA

December 4, 2025 at 7:44 AM

This report was logged as a live voice. Category: Medical & prescriptions. Violation date: December 3, 2025 at 3:01 PM.

FTC report from Pulaski, TENNESSEE

November 28, 2025 at 3:31 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: November 28, 2025 at 2:28 PM.

FTC report from FLORIDA

November 15, 2025 at 3:56 PM

666-396-1660 was logged as a live voice. Violation date: November 14, 2025 at 10:00 AM.

FCC report from Murfreesboro, TN

September 24, 2025 at 7:38 PM

666-202-8567 was logged as a prerecorded voice. Category: Credit Card Debt Services. Unwanted Calls. Contact method: Wireless (cell phone/other mobile device).

FTC report from De Soto, MISSOURI

September 16, 2025 at 11:33 AM

666-789-2865 was logged as a live voice. Category: Medical & prescriptions. Violation date: September 16, 2025 at 10:27 AM.

FTC report from MARYLAND

September 2, 2025 at 1:03 PM

666-526-1580 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: September 2, 2025 at 1:00 PM.

FTC report from CALIFORNIA

August 15, 2025 at 7:25 PM

This report was logged as a unwanted call. Category: No Subject Provided. Violation date: August 15, 2025 at 12:47 PM.

FTC report from FLORIDA

August 15, 2025 at 12:40 PM

This report was logged as a robocall. Violation date: August 15, 2025 at 12:29 PM.

FTC report from ILLINOIS

August 8, 2025 at 9:50 AM

This report was logged as a robocall. Category: Dropped call or no message. Violation date: August 7, 2025 at 12:52 PM.

FTC report from CALIFORNIA

August 5, 2025 at 10:20 PM

666-685-0903 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 5, 2025 at 7:14 PM.

FCC report from Highlands Ranch, CO

August 2, 2025 at 9:09 PM

666-225-1996 was logged as a text message. Unwanted Calls. Contact method: Wireless (cell phone/other mobile device).

FTC report from Tempe, ARIZONA

July 29, 2025 at 12:22 PM

This report was logged as a robocall. Violation date: July 29, 2025 at 9:16 AM.

FTC report from Fayetteville, NORTH CAROLINA

July 19, 2025 at 6:18 PM

This report was logged as a robocall. Violation date: July 16, 2025 at 3:25 PM.

FTC report from Fayetteville, NORTH CAROLINA

July 19, 2025 at 6:14 PM

This report was logged as a robocall. Violation date: July 16, 2025 at 1:53 PM.

FTC report from Mo, MISSOURI

July 17, 2025 at 7:30 PM

666-972-4678 was logged as a robocall. Violation date: July 17, 2025 at 3:00 PM.

FTC report from CALIFORNIA

June 27, 2025 at 3:25 PM

This report was logged as a live voice. Category: No Subject Provided. Violation date: June 22, 2025 at 11:45 AM.

FTC report from SOUTH DAKOTA

June 19, 2025 at 11:53 AM

666-206-3981 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: June 19, 2025 at 10:00 AM.

FTC report from FLORIDA

June 6, 2025 at 2:13 PM

This report was logged as a live voice. Violation date: May 24, 2025 at 2:18 PM.

FTC report from Alamosa, COLORADO

June 3, 2025 at 2:27 PM

666-625-1167 was logged as a live voice. Violation date: June 3, 2025 at 8:42 AM.

FTC report from ALABAMA

May 28, 2025 at 2:57 PM

This report was logged as a unwanted call. Category: Calls pretending to be government, businesses, or family and friends. Violation date: May 28, 2025 at 1:34 PM.

FTC report from CALIFORNIA

May 4, 2025 at 5:32 PM

This report was logged as a live voice. Category: No Subject Provided. Violation date: May 2, 2025 at 8:28 AM.

FTC report from Appleton, WISCONSIN

May 2, 2025 at 2:06 PM

666-930-5124 was logged as a robocall. Category: Dropped call or no message. Violation date: May 1, 2025 at 1:30 PM.

FTC report from Benton, ILLINOIS

March 12, 2025 at 3:30 PM

This report was logged as a unwanted call. Violation date: March 11, 2025 at 6:24 PM.

FTC report from Corrupt, DISTRICT OF COLUMBIA

March 12, 2025 at 1:07 PM

666-666-6666 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: March 12, 2025 at 11:00 AM.

FTC report from KANSAS

February 26, 2025 at 2:03 PM

This report was logged as a live voice. Violation date: February 14, 2025 at 1:29 PM.

FTC report from Tinton Falls, NEW JERSEY

February 10, 2025 at 9:27 PM

This report was logged as a robocall. Category: Dropped call or no message. Violation date: January 31, 2025 at 9:38 AM.

FTC report from CALIFORNIA

January 23, 2025 at 12:48 PM

This report was logged as a unwanted call. Category: No Subject Provided. Violation date: January 10, 2025 at 2:14 PM.

FTC report from Jjjj, HAWAII

January 20, 2025 at 2:59 PM

This report was logged as a robocall. Category: Computer & technical support. Violation date: January 15, 2025 at 12:00 PM.