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Area Code Detail

Area Code 421

North American numbering plan area

Reports, 30 Days 0

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

Reports, 180 Days 6

Broader complaint volume used to prioritize indexable pages.

Active Prefixes 0

Distinct NPA-NXX prefixes surfaced from routing and assignment 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

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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.

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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.

Recent Signals

Latest complaint activity tied to 421

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

FCC report from Lake Stevens, WA

March 31, 2026 at 5:17 PM

321-495-5204 was logged as a prerecorded voice. Unwanted Calls. Contact method: Wireless (cell phone/other mobile device).

FTC report from York, SOUTH CAROLINA

March 25, 2026 at 10:00 AM

421-524-2069 was logged as a robocall. Violation date: March 24, 2026 at 3:56 PM.

FTC report from Saratoga Springs, WASHINGTON

February 19, 2026 at 6:09 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: February 19, 2026 at 4:00 PM.

FTC report from Twin Lake, MICHIGAN

February 12, 2026 at 12:04 PM

This report was logged as a live voice. Violation date: February 12, 2026 at 10:55 AM.

FTC report from Nashville, NORTH CAROLINA

January 19, 2026 at 2:02 PM

This report was logged as a live voice. Violation date: January 19, 2026 at 2:00 PM.

FTC report from Mansfield, OHIO

December 13, 2025 at 1:29 PM

This report was logged as a robocall. Violation date: December 12, 2025 at 12:26 PM.

FTC report from Cheboygan, MICHIGAN

September 30, 2025 at 4:12 PM

This report was logged as a robocall. Violation date: September 30, 2025 at 12:00 AM.

FTC report from Pittsburgh, PENNSYLVANIA

September 23, 2025 at 11:57 AM

421-550-4397 was logged as a live voice. Category: Dropped call or no message. Violation date: September 23, 2025 at 12:00 AM.

FTC report from PENNSYLVANIA

September 12, 2025 at 1:54 PM

421-991-9901 was logged as a live voice. Category: Medical & prescriptions. Violation date: September 12, 2025 at 12:00 AM.

FTC report from Lawrenceburg, TENNESSEE

August 6, 2025 at 5:22 PM

This report was logged as a unwanted call. Violation date: August 5, 2025 at 10:31 AM.

FTC report from Nashville, TENNESSEE

July 25, 2025 at 1:00 PM

This report was logged as a robocall. Violation date: July 25, 2025 at 12:00 PM.

FTC report from Denison, TEXAS

July 17, 2025 at 2:30 PM

This report was logged as a live voice. Category: Medical & prescriptions. Violation date: July 17, 2025 at 1:25 PM.

FTC report from FLORIDA

June 12, 2025 at 12:58 PM

421-419-1999 was logged as a live voice. Violation date: June 12, 2025 at 12:30 PM.

FTC report from Worthington, OHIO

June 11, 2025 at 8:48 PM

This report was logged as a live voice. Violation date: June 11, 2025 at 4:01 PM.

FTC report from Kendall, NEW YORK

June 7, 2025 at 3:48 PM

This report was logged as a unwanted call. Category: No Subject Provided. Violation date: May 23, 2025 at 2:56 PM.

FTC report from Nitro, WEST VIRGINIA

June 3, 2025 at 5:57 PM

421-255-4640 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: June 3, 2025 at 12:00 PM.

FTC report from Escanaba, MICHIGAN

May 14, 2025 at 1:09 PM

This report was logged as a robocall. Violation date: May 13, 2025 at 11:06 AM.

FTC report from Harwinton, CONNECTICUT

April 21, 2025 at 12:01 PM

This report was logged as a live voice. Violation date: April 14, 2025 at 2:18 PM.

FTC report from Coraopolis, PENNSYLVANIA

March 20, 2025 at 12:04 PM

This report was logged as a live voice. Category: Warranties & protection plans. Violation date: March 19, 2025 at 4:41 AM.

FTC report from Kingsville, MARYLAND

March 5, 2025 at 12:12 PM

This report was logged as a live voice. Category: Medical & prescriptions. Violation date: March 5, 2025 at 11:55 AM.

FTC report from Lake Wales, FLORIDA

February 11, 2025 at 6:55 PM

421-396-1746 was logged as a live voice. Violation date: February 11, 2025 at 4:31 PM.

FTC report from CALIFORNIA

January 14, 2025 at 5:21 PM

421-842-5007 was logged as a live voice. Violation date: January 13, 2025 at 11:53 PM.

FTC report from Castle Valley, UTAH

December 10, 2024 at 6:34 PM

421-336-4395 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: December 10, 2024 at 12:09 PM.

FTC report from Baltimore, MARYLAND

December 3, 2024 at 10:47 PM

421-576-4575 was logged as a live voice. Category: Lotteries, prizes & sweepstakes. Violation date: October 15, 2024 at 12:00 PM.

FTC report from PENNSYLVANIA

October 26, 2024 at 10:39 AM

421-520-9132 was logged as a robocall. Category: Dropped call or no message. Violation date: October 25, 2024 at 5:02 PM.

FTC report from Queensbury, NEW YORK

October 18, 2024 at 11:12 AM

421-449-9938 was logged as a robocall. Category: Medical & prescriptions. Violation date: October 7, 2024 at 1:15 PM.

FTC report from Scottsdale, ARIZONA

July 12, 2024 at 7:18 PM

421-219-8005 was logged as a live voice. Violation date: July 12, 2024 at 11:37 AM.

FTC report from Fayetteville, NORTH CAROLINA

April 6, 2024 at 2:24 PM

This report was logged as a robocall. Violation date: March 8, 2024 at 10:59 AM.

FTC report from Ofallon, ILLINOIS

March 27, 2024 at 11:48 AM

421-879-8344 was logged as a robocall. Violation date: March 27, 2024 at 10:45 AM.

FTC report from Apopka, FLORIDA

March 18, 2024 at 12:12 PM

421-461-9409 was logged as a live voice. Category: Charities. Violation date: March 18, 2024 at 12:01 PM.

FTC report from Villa Rica, GEORGIA

March 7, 2024 at 5:26 PM

421-407-5477 was logged as a robocall. Violation date: March 7, 2024 at 10:53 AM.

FTC report from NORTH CAROLINA

February 23, 2024 at 1:55 PM

This report was logged as a unwanted call. Violation date: February 23, 2024 at 1:55 PM.

FTC report from TEXAS

February 13, 2024 at 1:44 PM

This report was logged as a robocall. Violation date: February 9, 2024 at 2:38 PM.

FTC report from TENNESSEE

December 29, 2023 at 10:48 PM

421-818-8578 was logged as a unwanted call. Category: No Subject Provided. Violation date: December 27, 2023 at 3:38 PM.

FTC report from Trabuco Canyon, CALIFORNIA

December 7, 2023 at 1:53 PM

This report was logged as a live voice. Violation date: December 7, 2023 at 10:40 AM.

FTC report from Long Beach, CALIFORNIA

November 30, 2023 at 4:08 PM

This report was logged as a robocall. Violation date: November 30, 2023 at 12:05 PM.

FTC report from MICHIGAN

November 1, 2023 at 11:43 AM

This report was logged as a robocall. Violation date: November 1, 2023 at 12:00 AM.

FTC report from Mn, MINNESOTA

October 31, 2023 at 3:33 PM

This report was logged as a robocall. Violation date: October 31, 2023 at 1:15 PM.

FTC report from Santa Cruz, CALIFORNIA

October 19, 2023 at 11:44 AM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: October 19, 2023 at 8:43 AM.

FTC report from MAINE

October 18, 2023 at 12:33 PM

This report was logged as a live voice. Category: Medical & prescriptions. Violation date: October 17, 2023 at 12:30 PM.