Area Code 231

FTC complaints involving 231 numbers

Numbers shown with area code 231 in the FTC's Do Not Call “Reported Calls” database (recent reporting window). Most common reported reasons: “Other”, “Reducing your debt (credit cards, mortgage, student loans)”, “Dropped call or no message”.

Most-complained 231 numbers:

• (231) 578-5078 — 10 complaints
• (231) 430-2528 — 8 complaints
• (231) 774-2780 — 7 complaints
• (231) 430-2526 — 6 complaints
• (231) 237-8660 — 5 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 231?

Area code 231 covers Muskegon and nearby cities including Norton Shores, Shelby in Michigan, in the Eastern Time.

What cities use area code 231?

Area code 231 serves Muskegon, Norton Shores, Shelby in Michigan.

What time zone is area code 231 in?

Area code 231 is in the Eastern Time (America/New_York).

How do you dial a 231 number?

Dial all 10 digits: 231 followed by the 7-digit local number. From abroad, dial +1 231 and the local number.

Is a call from area code 231 a scam?

A 231 number is geographically tied to Michigan, 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 231 a country code?

No. 231 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 231 number written for international dialing looks like +1 231 followed by the 7-digit local number.