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 21

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

Reports, 180 Days 108

Broader complaint volume used to prioritize indexable pages.

Active Prefixes 98

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

Carriers / Assignees 27

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.

Phone LookupTop ComplaintsArea CodesNPA-NXXiMessage
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

  • ONVOY, LLC - MO · 297 routing rows
  • NEW CINGULAR WIRELESS PCS, LLC - IL · 281 routing rows
  • TELEPORT COMMUNICATIONS AMERICA, LLC - MO · 155 routing rows
  • CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO · 58 routing rows
  • ONVOY SPECTRUM, LLC · 25 routing rows
  • BOOST SUBSCRIBERCO L.L.C. · 16 routing rows
  • BANDWIDTH.COM CLEC, LLC - MO · 14 routing rows
  • 8X8, INC. · 11 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
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
557-264-XXXX LADUE Ladue MO
557-265-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
557-666-XXXX KIRKWOOD Kirkwood 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
557-880-XXXX ST LOUIS Saint Louis 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 Ballwin, MISSOURI

November 7, 2026 at 5:37 PM

557-557-7335 was logged as a unwanted call. Violation date: November 7, 2026 at 2:06 PM.

FTC report from Climax Springs, MISSOURI

November 7, 2026 at 1:56 PM

557-500-8814 was logged as a robocall. Category: Dropped call or no message. Violation date: November 4, 2026 at 5:28 PM.

FTC report from OHIO

November 6, 2026 at 2:59 PM

557-246-0608 was logged as a unwanted call. Category: Dropped call or no message. Violation date: November 3, 2026 at 12:00 PM.

FTC report from OKLAHOMA

November 6, 2026 at 2:13 PM

557-234-1779 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: November 6, 2026 at 1:09 PM.

FTC report from Chattanooga, TENNESSEE

November 3, 2026 at 4:36 PM

557-256-7352 was logged as a robocall. Category: Dropped call or no message. Violation date: September 23, 2026 at 10:01 AM.

FTC report from Weldon Spring, MISSOURI

November 3, 2026 at 11:25 AM

557-256-7762 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: November 3, 2026 at 10:24 AM.

FTC report from MISSOURI

November 2, 2026 at 2:34 PM

557-653-9654 was logged as a robocall. Violation date: November 2, 2026 at 1:32 PM.

FTC report from Grove, MISSOURI

October 28, 2026 at 9:56 PM

557-204-3600 was logged as a robocall. Violation date: October 7, 2026 at 10:47 AM.

FTC report from Saint Louis, MISSOURI

October 26, 2026 at 8:47 AM

557-996-8972 was logged as a live voice. Violation date: October 22, 2026 at 10:41 AM.

FTC report from ILLINOIS

October 23, 2026 at 11:54 AM

557-246-5177 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 23, 2026 at 10:50 AM.

FTC report from Cape Coral, FLORIDA

October 22, 2026 at 3:29 PM

557-212-4184 was logged as a robocall. Violation date: October 22, 2026 at 3:25 PM.

FTC report from Fenton, MISSOURI

October 22, 2026 at 11:22 AM

557-203-5154 was logged as a robocall. Category: Medical & prescriptions. Violation date: October 22, 2026 at 10:00 AM.

FTC report from COLORADO

October 21, 2026 at 2:07 PM

This report was logged as a robocall. Violation date: October 15, 2026 at 3:40 PM.

FTC report from MISSOURI

October 20, 2026 at 3:39 PM

557-567-9278 was logged as a live voice. Violation date: October 9, 2026 at 8:44 PM.

FTC report from MISSOURI

October 20, 2026 at 3:36 PM

557-204-3628 was logged as a live voice. Violation date: October 17, 2026 at 5:33 PM.

FTC report from Peoria, ARIZONA

October 19, 2026 at 3:45 PM

This report was logged as a live voice. Violation date: October 19, 2026 at 12:30 PM.

FTC report from MISSOURI

October 19, 2026 at 1:41 PM

557-500-9924 was logged as a unwanted call. Violation date: October 16, 2026 at 12:23 PM.

FTC report from MISSOURI

October 19, 2026 at 1:37 PM

557-500-9924 was logged as a unwanted call. Violation date: October 16, 2026 at 12:24 PM.

FTC report from MARYLAND

October 16, 2026 at 9:21 PM

557-204-3639 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 16, 2026 at 8:16 PM.

FTC report from Nevada, TEXAS

October 16, 2026 at 1:56 PM

This report was logged as a robocall. Violation date: October 16, 2026 at 11:21 AM.

FTC report from MISSOURI

October 14, 2026 at 3:11 PM

557-500-9260 was logged as a robocall. Violation date: October 14, 2026 at 2:07 PM.

FTC report from MISSOURI

October 12, 2026 at 8:34 PM

557-256-9765 was logged as a live voice. Category: Home improvement & cleaning. Violation date: October 12, 2026 at 7:32 PM.

FTC report from St Peters, MISSOURI

October 9, 2026 at 6:52 PM

This report was logged as a live voice. Category: Medical & prescriptions. Violation date: October 9, 2026 at 8:55 AM.

FTC report from OHIO

October 9, 2026 at 2:12 PM

557-240-5102 was logged as a live voice. Violation date: October 6, 2026 at 5:41 PM.

FTC report from MISSOURI

October 8, 2026 at 6:18 PM

557-204-3655 was logged as a live voice. Violation date: September 30, 2026 at 1:04 PM.

FTC report from MISSOURI

October 8, 2026 at 6:17 PM

557-204-3643 was logged as a live voice. Violation date: October 2, 2026 at 12:28 PM.

FTC report from CALIFORNIA

October 7, 2026 at 11:12 PM

557-210-8301 was logged as a robocall. Category: No Subject Provided. Violation date: September 2, 2026 at 10:27 AM.

FTC report from Amawalk, NEW YORK

October 6, 2026 at 4:05 PM

557-204-3736 was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: October 6, 2026 at 4:47 PM.

FTC report from Chico, CALIFORNIA

October 4, 2026 at 2:01 PM

557-221-6729 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: October 1, 2026 at 12:17 PM.

FTC report from MISSOURI

September 29, 2026 at 4:58 PM

557-204-0016 was logged as a live voice. Category: Medical & prescriptions. Violation date: September 29, 2026 at 3:53 PM.

FTC report from Thornville, OHIO

September 29, 2026 at 4:15 PM

557-240-6225 was logged as a unwanted call. Category: No Subject Provided. Violation date: September 29, 2026 at 4:13 PM.

FTC report from Decatur, TENNESSEE

September 29, 2026 at 12:16 PM

557-567-9278 was logged as a live voice. Violation date: September 28, 2026 at 3:04 PM.

FTC report from OHIO

September 28, 2026 at 5:12 PM

557-240-9401 was logged as a robocall. Category: Medical & prescriptions. Violation date: September 28, 2026 at 2:57 AM.

FTC report from MISSOURI

September 25, 2026 at 5:24 PM

557-204-3244 was logged as a live voice. Violation date: September 21, 2026 at 4:16 PM.

FTC report from Philadelphia, PENNSYLVANIA

September 25, 2026 at 11:51 AM

557-999-8132 was logged as a live voice. Violation date: September 25, 2026 at 12:00 PM.

FTC report from NEW MEXICO

September 23, 2026 at 1:53 PM

557-999-8177 was logged as a robocall. Violation date: September 23, 2026 at 9:00 AM.

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.