Area Code Detail

Area Code 400

North American numbering plan area

Reports, 30 Days 30

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

Reports, 180 Days 43

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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Overview

What this area code covers

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

Recent Signals

Latest complaint activity tied to 400

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

FTC report from Cave Spring, GEORGIA

July 29, 2026 at 3:59 PM

400-200-0130 was logged as a robocall. Violation date: July 29, 2026 at 12:00 AM.

FTC report from Conway, SOUTH CAROLINA

July 17, 2026 at 6:04 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 17, 2026 at 4:12 PM.

FTC report from Conway, SOUTH CAROLINA

July 17, 2026 at 6:03 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 17, 2026 at 4:05 PM.

FTC report from Conway, SOUTH CAROLINA

July 17, 2026 at 2:43 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 17, 2026 at 2:04 PM.

FTC report from Conway, SOUTH CAROLINA

July 17, 2026 at 2:42 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 17, 2026 at 1:14 PM.

FTC report from Conway, SOUTH CAROLINA

July 17, 2026 at 2:41 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 17, 2026 at 12:13 PM.

FTC report from Conway, SOUTH CAROLINA

July 16, 2026 at 6:57 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 16, 2026 at 6:49 PM.

FTC report from Conway, SOUTH CAROLINA

July 16, 2026 at 3:43 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 16, 2026 at 3:31 PM.

FTC report from Conway, SOUTH CAROLINA

July 16, 2026 at 3:42 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 16, 2026 at 2:30 PM.

FTC report from Conway, SOUTH CAROLINA

July 16, 2026 at 3:41 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 16, 2026 at 1:55 PM.

FTC report from Conway, SOUTH CAROLINA

July 16, 2026 at 3:40 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 16, 2026 at 11:09 AM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:42 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: June 30, 2026 at 1:20 PM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:41 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: June 30, 2026 at 6:45 PM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:38 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 6, 2026 at 10:54 AM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:34 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 7, 2026 at 2:59 PM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:33 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 7, 2026 at 5:51 PM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:32 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 8, 2026 at 4:14 PM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:30 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 8, 2026 at 6:56 PM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:29 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 9, 2026 at 12:35 PM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:28 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 9, 2026 at 3:55 PM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:27 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 10, 2026 at 9:24 PM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:25 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 10, 2026 at 10:20 AM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:24 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 10, 2026 at 3:22 PM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:23 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 10, 2026 at 5:51 PM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:22 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 13, 2026 at 9:24 AM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:20 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 14, 2026 at 10:57 AM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:17 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 14, 2026 at 2:01 PM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:15 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 14, 2026 at 5:56 PM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:13 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 14, 2026 at 6:17 PM.

FTC report from Conway, SOUTH CAROLINA

July 15, 2026 at 5:04 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 15, 2026 at 3:54 PM.

FTC report from Upper Marlboro, MARYLAND

July 8, 2026 at 11:41 AM

400-600-8626 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: July 8, 2026 at 12:00 AM.

FTC report from OHIO

July 6, 2026 at 8:09 PM

400-600-8164 was logged as a robocall. Violation date: July 6, 2026 at 4:38 PM.

FTC report from Mount Airy, NORTH CAROLINA

July 2, 2026 at 6:58 PM

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

FTC report from Alliance, OHIO

July 1, 2026 at 7:11 AM

400-955-5819 was logged as a robocall. Violation date: June 29, 2026 at 5:51 PM.

FTC report from Summerville, SOUTH CAROLINA

May 25, 2026 at 4:33 PM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: May 25, 2026 at 10:01 AM.

FTC report from MARYLAND

May 18, 2026 at 1:37 PM

400-929-9169 was logged as a robocall. Category: Home improvement & cleaning. Violation date: May 18, 2026 at 1:37 PM.

FTC report from Akron, OHIO

April 3, 2026 at 10:37 AM

This report was logged as a robocall. Violation date: March 27, 2026 at 1:12 PM.

FTC report from Wexford, PENNSYLVANIA

March 20, 2026 at 11:49 AM

This report was logged as a live voice. Violation date: March 19, 2026 at 3:49 PM.

FTC report from Daytojn, OHIO

March 9, 2026 at 5:29 PM

400-831-6377 was logged as a robocall. Category: Dropped call or no message. Violation date: March 9, 2026 at 2:15 PM.

FTC report from Akron, OHIO

March 4, 2026 at 9:43 AM

This report was logged as a robocall. Violation date: March 2, 2026 at 11:45 AM.