227 area code
Where the 227 area code is, its overlay and how to dial a +1 227 number from anywhere.
The 227 area code is in Maryland, United States (Eastern (ET)). To call from abroad: +1 227 555-0123. It is an overlay, so all 10 digits are dialled.
The 227 area code is a geographic North American Numbering Plan (NANP) code covering Maryland. It has been in service since 17-Jan-2001 and sits in the Eastern (ET) time zone.
How to dial a 227 number
+1 227 555-01231 227 555-0123227 555-0123Other Maryland area codes
Frequently asked questions
Where is the 227 area code?
The 227 area code is in Maryland, United States (Eastern (ET)).
Is 227 an overlay area code?
Yes. 227 overlays the same region as 240, 301, so callers dial all 10 digits.
Do I have to dial 10 digits for 227?
Yes — dial the area code plus the seven-digit number.
How do I call a 227 number from another country?
Dial your exit code (or +), then 1, then 227, then the number: +1 227 555-0123.
Source: NANPA numbering plan. An area code covers a region, not a precise address — a 227 number does not pinpoint a street or ZIP code.
Number holders in area code 227
Each prefix (the three digits after the area code) is assigned by NANPA to one telephone company. 152 prefixes are in use in 227, shared by 18 companies. The largest holders:
| Company | Prefixes | Share |
|---|---|---|
| Onvoy, LLC | 38 | 25% |
| New Cingular Wireless PCS, LLC | 37 | 24% |
| Omnipoint Communications Cap Operations, LLC | 22 | 14% |
| Multiple Ocn Listing | 9 | 6% |
| Cellco Partnership Dba Verizon Wireless | 9 | 6% |
| Commio, LLC | 7 | 5% |
Source: NANPA central office code assignments. A number keeps its original prefix when it is ported to another carrier.
Complaints about 227 numbers
- Reports to the FTC, last 30 days
- 189
- Recorded messages or robocalls
- 41%
- Rank among area codes
- #337 of 670
- Most reported subjects
- Other (112)
- Dropped call or no message (36)
- Calls pretending to be government, businesses, or family and friends (9)
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 227 — cities & rate centres