410 is an in-service United States area code assigned to Maryland. It identifies a numbering region, not a caller’s current location.
NANPA assigns 410 to Maryland. Area code 410 serves eastern and central Maryland, including Baltimore and the Eastern Shore. It is overlaid by area codes 443 and 667. Browse other codes in Maryland
Additional area detail: Maryland Public Service Commission.
View the official area-code maps ↗. Maps show numbering areas, not a caller’s location.
NANPA lists Eastern for this numbering area. These are numbering-region time zones, not a caller’s current location.
An area code can span more than one time zone. Local daylight-saving rules may differ.
The NANPA source lists 443, 667 in the same overlay complex. An overlay can serve the same broad numbering area; individual numbers still do not prove where a person is.
Use the North American country calling code +1 followed by the three-digit area code and seven-digit local number. For example, write the pattern as +1 410 XXX XXXX. Local dialing rules and charges depend on your location and provider. Check a supported dialing format or check NANPA’s 10-digit dialing list.
NANPA’s US report listed 783 assigned prefixes on 2026-09-29. These are code assignments, not a count of active phone numbers or proof of a caller’s current carrier. Search any US area code and prefix.
| Rate center | Assigned prefixes |
|---|---|
| BALTIMORE | 189 |
| TOWSON | 53 |
| ANNAPOLIS | 36 |
| CATONSVL | 35 |
| GLENBURNIE | 29 |
| Assignment company | Assigned prefixes |
|---|---|
| VERIZON MARYLAND, INC. | 507 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 53 |
| NEW CINGULAR WIRELESS PCS, LLC - DC | 51 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | 45 |
| SPOK, INC. | 28 |
783 assigned prefixes are listed for this area code. Search NANPA’s US central-office code assignments. The listed company and rate center describe an assignment; number portability means they cannot identify the current carrier, subscriber, or caller.
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Enter a 10-digit +1 North American number. We check its structure and area-code record, not the caller’s identity or whether the line is active.
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The displayed number may be spoofed. Do not rely on an area code as proof of caller identity. If the caller claims to represent a business, end the call and contact that business using a number you found independently.
410, 443, and 667 are overlay area codes serving eastern and central Maryland, including Baltimore, Annapolis, and Ocean City. All three codes serve the exact same geographic region.
410 is assigned to Maryland, and the NANPA record associates it with Eastern time. A phone number does not reveal its owner’s current time zone. The clock above uses a representative time zone for the numbering area.
No. An area code is an assignment, and a person can travel, move, use internet calling, or display a spoofed number.
No. OfficialAreaCode has no live subscriber directory or spam-report database.