517 area code
Where the 517 area code is, its overlay and how to dial a +1 517 number from anywhere.
The 517 area code is in Adrian, Michigan, United States (Eastern (ET)). To call from abroad: +1 517 555-0123.
The 517 area code is a geographic North American Numbering Plan (NANP) code covering Adrian, Michigan. It has been in service since 01-Jan-1947 and sits in the Eastern (ET) time zone.
How to dial a 517 number
+1 517 555-01231 517 555-0123Cities in the 517 area code
A 517 number is usually in one of these places in Michigan — 4 counties.
Other Michigan area codes
Frequently asked questions
Where is the 517 area code?
The 517 area code is in Adrian, Michigan, United States (Eastern (ET)).
Do I have to dial 10 digits for 517?
Local calls within 517 may use seven digits; ten-digit dialling always works.
How do I call a 517 number from another country?
Dial your exit code (or +), then 1, then 517, then the number: +1 517 555-0123.
Source: NANPA numbering plan. An area code covers a region, not a precise address — a 517 number does not pinpoint a street or ZIP code.
Number holders in area code 517
Each prefix (the three digits after the area code) is assigned by NANPA to one telephone company. 639 prefixes are in use in 517, shared by 63 companies. The largest holders:
| Company | Prefixes | Share |
|---|---|---|
| Michigan Bell Tel Co | 106 | 17% |
| Cellco Partnership Dba Verizon Wireless | 61 | 10% |
| Acd Telecom, Inc. | 56 | 9% |
| Omnipoint Communications Midwest Operations, LLC | 47 | 7% |
| New Cingular Wireless PCS, LLC | 40 | 6% |
| Frontier North, Inc. | 30 | 5% |
Source: NANPA central office code assignments. A number keeps its original prefix when it is ported to another carrier.
Complaints about 517 numbers
- Reports to the FTC, last 30 days
- 502
- Recorded messages or robocalls
- 66%
- Rank among area codes
- #202 of 670
- Most reported subjects
- Other (153)
- Calls pretending to be government, businesses, or family and friends (118)
- Medical & prescriptions (57)
Period Aug 26 – Sep 24, 2026. These are the numbers shown on the caller ID of the reported calls; many are spoofed and do not belong to the real caller.
Source: US Federal Trade Commission, Do Not Call reported calls data (daily files).
All US area codes United States +1 Map of area code 517 — cities & rate centres