Area Code 557

Area code 557 is one of the newest NANP area codes

Area code 557 is one of the most recently added codes in the North American Numbering Plan, in service since August 12, 2022. It is an overlay that shares its territory with 314, adding fresh numbers as those codes fill up. Existing numbers in the area keep their codes; only new phone lines may be issued a 557 number.

Because 557 is new and unfamiliar, some people are wary when it appears on caller ID and search for “who called me from 557?” An area code only shows where a number is registered, and any number can be spoofed — so a 557 call is not suspicious on its own. Judge each call by what it asks for, not the code. Is a call from 557 a scam?

FTC complaints involving 557 numbers

Numbers shown with area code 557 in the FTC's Do Not Call “Reported Calls” database (recent reporting window). Most common reported reasons: “Other”, “Vacation & timeshares”, “Calls pretending to be government, businesses, or family and friends”.

Most-complained 557 numbers:

• (557) 200-7334 — 4 complaints
• (557) 204-0016 — 4 complaints
• (557) 557-1797 — 3 complaints
• (557) 210-8558 — 3 complaints
• (557) 467-2078 — 3 complaints

These are FTC Do Not Call complaints filed about specific numbers shown with this area code — frequently spoofed. The area code itself is not a scam. See the most-reported area codes and the most-reported phone numbers nationwide.

Frequently asked questions

Where is area code 557?

Area code 557 covers St Louis and nearby cities including St. Louis, Florissant, Affton in Missouri, in the Central Time.

What cities use area code 557?

Area code 557 serves St Louis, St. Louis, Florissant, Affton, Ferguson, and 8 other communities in Missouri.

What time zone is area code 557 in?

Area code 557 is in the Central Time (America/Chicago).

How do you dial a 557 number?

Dial all 10 digits: 557 followed by the 7-digit local number. From abroad, dial +1 557 and the local number.

Is a call from area code 557 a scam?

A 557 number is geographically tied to Missouri, but caller ID can be spoofed, so the displayed area code does not prove where a caller really is. If you did not expect the call, do not share personal information and consider looking the number up.

Is 557 a country code?

No. 557 is a US area code (a domestic 3-digit code), not a country code. The country (calling) code for the United States is +1, shared across the North American Numbering Plan. So a full 557 number written for international dialing looks like +1 557 followed by the 7-digit local number.