Area Code Detail

Area Code 557

Missouri (St. Louis, St. Louis County, Florissant, Crestwood, Hazelwood, Kirkwood, and surrounding suburbs of St. Louis) · In service since August 12, 2022

MO
Reports, 30 Days 19

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

Reports, 180 Days 107

Broader complaint volume used to prioritize indexable pages.

Active Prefixes 94

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

Carriers / Assignees 26

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

Cities / Rate Centers 7

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.

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Overview

What this area code covers

Missouri (St. Louis, St. Louis County, Florissant, Crestwood, Hazelwood, Kirkwood, and surrounding suburbs of St. Louis)

overlaid on 314

Common cities and rate centers

Creve Coeur Kirkwood Ladue Mehlville Oakville Saint Louis Sappington

Top carriers and assignees

  • NEW CINGULAR WIRELESS PCS, LLC - IL · 274 routing rows
  • ONVOY, LLC - MO · 274 routing rows
  • TELEPORT COMMUNICATIONS AMERICA, LLC - MO · 155 routing rows
  • CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO · 53 routing rows
  • ONVOY SPECTRUM, LLC · 25 routing rows
  • BOOST SUBSCRIBERCO L.L.C. · 17 routing rows
  • BANDWIDTH.COM CLEC, LLC - MO · 13 routing rows
  • NUSO, LLC · 9 routing rows
  • MULTIPLE OCN LISTING · 9 routing rows
  • TELNYX LLC · 5 routing rows
  • T-MOBILE USA, INC. · 5 routing rows
  • TERRA NOVA TELECOM INC. · 5 routing rows
NPA-NXX

Prefix directory inside area code 557

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
557-200-XXXX LADUE Ladue MO
557-201-XXXX KIRKWOOD Kirkwood MO
557-202-XXXX ST LOUIS Saint Louis MO
557-203-XXXX MEHLVILLE Mehlville MO
557-204-XXXX ST LOUIS Saint Louis MO
557-205-XXXX ST LOUIS Saint Louis MO
557-206-XXXX ST LOUIS Saint Louis MO
557-207-XXXX OAKVILLE Oakville MO
557-208-XXXX LADUE Ladue MO
557-209-XXXX KIRKWOOD Kirkwood MO
557-210-XXXX LADUE Ladue MO
557-211-XXXX XXXXXXXXXX MO
557-212-XXXX MEHLVILLE Mehlville MO
557-213-XXXX ST LOUIS Saint Louis MO
557-214-XXXX ST LOUIS Saint Louis MO
557-215-XXXX ST LOUIS Saint Louis MO
557-216-XXXX ST LOUIS Saint Louis MO
557-217-XXXX SAPPINGTON Sappington MO
557-218-XXXX LADUE Ladue MO
557-219-XXXX LADUE Ladue MO
557-220-XXXX CREVECOEUR Creve Coeur MO
557-221-XXXX MEHLVILLE Mehlville MO
557-222-XXXX ST LOUIS Saint Louis MO
557-223-XXXX LADUE Ladue MO
557-224-XXXX CREVECOEUR Creve Coeur MO
557-225-XXXX LADUE Ladue MO
557-226-XXXX CREVECOEUR Creve Coeur MO
557-227-XXXX KIRKWOOD Kirkwood MO
557-228-XXXX ST LOUIS Saint Louis MO
557-229-XXXX KIRKWOOD Kirkwood MO
557-230-XXXX SAPPINGTON Sappington MO
557-231-XXXX ST LOUIS Saint Louis MO
557-232-XXXX LADUE Ladue MO
557-233-XXXX ST LOUIS Saint Louis MO
557-234-XXXX ST LOUIS Saint Louis MO
557-235-XXXX KIRKWOOD Kirkwood MO
557-236-XXXX LADUE Ladue MO
557-237-XXXX LADUE Ladue MO
557-238-XXXX KIRKWOOD Kirkwood MO
557-239-XXXX ST LOUIS Saint Louis MO
557-240-XXXX LADUE Ladue MO
557-241-XXXX LADUE Ladue MO
557-242-XXXX ST LOUIS Saint Louis MO
557-243-XXXX ST LOUIS Saint Louis MO
557-244-XXXX KIRKWOOD Kirkwood MO
557-245-XXXX ST LOUIS Saint Louis MO
557-246-XXXX ST LOUIS Saint Louis MO
557-247-XXXX MEHLVILLE Mehlville MO
557-248-XXXX ST LOUIS Saint Louis MO
557-249-XXXX LADUE Ladue MO
557-250-XXXX ST LOUIS Saint Louis MO
557-251-XXXX KIRKWOOD Kirkwood MO
557-252-XXXX ST LOUIS Saint Louis MO
557-253-XXXX KIRKWOOD Kirkwood MO
557-254-XXXX LADUE Ladue MO
557-255-XXXX LADUE Ladue MO
557-256-XXXX MEHLVILLE Mehlville MO
557-257-XXXX CREVECOEUR Creve Coeur MO
557-258-XXXX OAKVILLE Oakville MO
557-259-XXXX SAPPINGTON Sappington MO
557-260-XXXX LADUE Ladue MO
557-261-XXXX KIRKWOOD Kirkwood MO
557-262-XXXX ST LOUIS Saint Louis MO
557-263-XXXX ST LOUIS Saint Louis MO
557-273-XXXX ST LOUIS Saint Louis MO
557-311-XXXX XXXXXXXXXX MO
557-333-XXXX SAPPINGTON Sappington MO
557-362-XXXX ST LOUIS Saint Louis MO
557-411-XXXX XXXXXXXXXX MO
557-444-XXXX CREVECOEUR Creve Coeur MO
557-454-XXXX ST LOUIS Saint Louis MO
557-467-XXXX ST LOUIS Saint Louis MO
557-500-XXXX ST LOUIS Saint Louis MO
557-507-XXXX ST LOUIS Saint Louis MO
557-511-XXXX XXXXXXXXXX MO
557-555-XXXX DIR ASST MO
557-557-XXXX ST LOUIS Saint Louis MO
557-567-XXXX KIRKWOOD Kirkwood MO
557-611-XXXX XXXXXXXXXX MO
557-653-XXXX ST LOUIS Saint Louis MO
557-700-XXXX MO
557-711-XXXX XXXXXXXXXX MO
557-747-XXXX ST LOUIS Saint Louis MO
557-777-XXXX CREVECOEUR Creve Coeur MO
557-811-XXXX XXXXXXXXXX MO
557-888-XXXX KIRKWOOD Kirkwood MO
557-911-XXXX XXXXXXXXXX MO
557-950-XXXX MO
557-953-XXXX ST LOUIS Saint Louis MO
557-958-XXXX MO
557-959-XXXX MO
557-976-XXXX MO
557-996-XXXX ST LOUIS Saint Louis MO
557-999-XXXX SAPPINGTON Sappington MO
Recent Signals

Latest complaint activity tied to 557

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

FTC report from Alliance, OHIO

September 22, 2026 at 1:29 PM

557-557-0311 was logged as a robocall. Violation date: September 22, 2026 at 1:16 PM.

FTC report from MICHIGAN

September 17, 2026 at 6:44 PM

557-999-8753 was logged as a robocall. Category: No Subject Provided. Violation date: September 17, 2026 at 12:00 AM.

FTC report from Florissant, MISSOURI

September 15, 2026 at 4:59 PM

557-201-1079 was logged as a robocall. Violation date: September 15, 2026 at 3:43 PM.

FTC report from Florissant, MISSOURI

September 13, 2026 at 6:55 PM

557-201-1089 was logged as a robocall. Violation date: September 13, 2026 at 12:00 AM.

FTC report from Wood River, ILLINOIS

September 11, 2026 at 6:28 PM

557-207-9542 was logged as a live voice. Category: Dropped call or no message. Violation date: August 31, 2026 at 8:41 PM.

FTC report from OHIO

September 11, 2026 at 3:55 PM

557-747-5802 was logged as a live voice. Violation date: September 11, 2026 at 2:55 PM.

FTC report from Akron, OHIO

September 11, 2026 at 9:03 AM

This report was logged as a unwanted call. Violation date: September 1, 2026 at 1:10 PM.

FTC report from Plano, TEXAS

September 7, 2026 at 3:41 PM

557-210-8310 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: September 2, 2026 at 1:13 PM.

FTC report from Wildwood, MISSOURI

September 3, 2026 at 9:59 AM

557-223-9490 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: September 2, 2026 at 12:50 PM.

FTC report from MISSOURI

September 2, 2026 at 6:13 PM

557-241-3073 was logged as a robocall. Violation date: September 2, 2026 at 6:45 PM.

FTC report from Wildwood, MISSOURI

August 31, 2026 at 5:52 PM

557-223-9445 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 31, 2026 at 10:02 AM.

FTC report from MISSOURI

August 27, 2026 at 10:51 PM

557-999-8219 was logged as a unwanted call. Violation date: August 26, 2026 at 4:47 PM.

FTC report from MISSOURI

August 27, 2026 at 10:39 PM

557-240-0646 was logged as a unwanted call. Violation date: August 21, 2026 at 5:08 PM.

FTC report from MISSOURI

August 27, 2026 at 10:32 PM

557-240-1992 was logged as a unwanted call. Violation date: August 21, 2026 at 1:40 PM.

FTC report from MISSOURI

August 27, 2026 at 10:24 PM

557-240-8294 was logged as a live voice. Violation date: August 24, 2026 at 3:55 PM.

FTC report from MISSOURI

August 27, 2026 at 10:17 PM

557-223-9459 was logged as a live voice. Violation date: August 19, 2026 at 11:30 AM.

FTC report from MISSOURI

August 27, 2026 at 10:11 PM

557-223-9248 was logged as a live voice. Violation date: August 18, 2026 at 2:13 PM.

FTC report from Whiteland, INDIANA

August 27, 2026 at 2:08 PM

557-999-8171 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 27, 2026 at 5:38 AM.

FTC report from Ringgold, GEORGIA

August 25, 2026 at 9:18 PM

557-467-2856 was logged as a robocall. Violation date: August 25, 2026 at 12:16 PM.

FTC report from Windsor, ONTARIO, CANADA

August 23, 2026 at 5:54 PM

557-207-3222 was logged as a robocall. Category: Work from home & other ways to make money. Violation date: August 23, 2026 at 4:06 PM.

FTC report from Saint Louis, MISSOURI

August 21, 2026 at 7:00 PM

557-219-9044 was logged as a robocall. Category: Medical & prescriptions. Violation date: August 21, 2026 at 5:42 PM.

FTC report from Saint Louis, MISSOURI

August 18, 2026 at 6:05 PM

557-202-9546 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: August 18, 2026 at 7:04 AM.

FTC report from MISSOURI

August 17, 2026 at 8:19 PM

557-207-9584 was logged as a live voice. Violation date: August 11, 2026 at 12:00 AM.

FTC report from Roodhouse, ILLINOIS

August 15, 2026 at 10:14 AM

557-467-2580 was logged as a live voice. Violation date: August 15, 2026 at 9:01 AM.

FTC report from St. Louis, MISSOURI

August 15, 2026 at 5:58 AM

557-223-8397 was logged as a live voice. Category: Medical & prescriptions. Violation date: August 14, 2026 at 4:51 PM.

FTC report from Hazelwood, MISSOURI

August 12, 2026 at 5:42 PM

557-500-7435 was logged as a robocall. Category: No Subject Provided. Violation date: August 12, 2026 at 8:00 AM.

FTC report from Saint Louis, MISSOURI

August 7, 2026 at 3:10 AM

557-207-9542 was logged as a robocall. Category: Dropped call or no message. Violation date: August 6, 2026 at 7:13 PM.

FTC report from GEORGIA

August 5, 2026 at 5:19 PM

This report was logged as a live voice. Category: Medical & prescriptions. Violation date: August 5, 2026 at 5:12 PM.

FTC report from GEORGIA

August 5, 2026 at 4:59 PM

This report was logged as a live voice. Category: Medical & prescriptions. Violation date: August 5, 2026 at 10:43 AM.

FTC report from GEORGIA

August 5, 2026 at 4:56 PM

This report was logged as a live voice. Category: Medical & prescriptions. Violation date: August 5, 2026 at 4:14 PM.

FTC report from GEORGIA

August 5, 2026 at 4:55 PM

This report was logged as a live voice. Category: Medical & prescriptions. Violation date: August 5, 2026 at 4:47 PM.

FTC report from GEORGIA

August 5, 2026 at 4:55 PM

This report was logged as a live voice. Category: Medical & prescriptions. Violation date: August 5, 2026 at 4:47 PM.

FTC report from GEORGIA

August 5, 2026 at 10:51 AM

This report was logged as a live voice. Category: Medical & prescriptions. Violation date: August 5, 2026 at 10:43 AM.

FTC report from GEORGIA

August 5, 2026 at 9:29 AM

This report was logged as a live voice. Category: Medical & prescriptions. Violation date: August 4, 2026 at 5:36 PM.

FTC report from GEORGIA

August 5, 2026 at 9:28 AM

This report was logged as a live voice. Category: Medical & prescriptions. Violation date: August 5, 2026 at 9:07 AM.

FTC report from GEORGIA

August 5, 2026 at 9:26 AM

This report was logged as a live voice. Category: Medical & prescriptions. Violation date: August 5, 2026 at 9:18 AM.

FTC report from MISSOURI

August 3, 2026 at 11:47 AM

557-204-7543 was logged as a robocall. Violation date: August 3, 2026 at 9:58 AM.

FTC report from Ringgold, GEORGIA

July 31, 2026 at 7:05 PM

557-467-2918 was logged as a robocall. Violation date: July 31, 2026 at 5:05 PM.

FTC report from CALIFORNIA

July 24, 2026 at 8:03 AM

557-232-4712 was logged as a live voice. Violation date: July 24, 2026 at 5:14 AM.

FTC report from TEXAS

July 20, 2026 at 8:07 AM

557-238-4193 was logged as a unwanted call. Violation date: July 20, 2026 at 1:00 AM.