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US area code · Maryland

443 area code

Where the 443 area code is, its overlay and how to dial a +1 443 number from anywhere.

CoversAnnapolis, MarylandTime zoneEastern (ET)TypeOverlay
Quick answer

The 443 area code is in Annapolis, Maryland, United States (Eastern (ET)). To call from abroad: +1 443 555-0123. It is an overlay, so all 10 digits are dialled.

StateMaryland
Main areaAnnapolis
Time zoneEastern (ET)
TypeOverlay
10-digit dialingRequired
In service since21-Jun-1996

The 443 area code is a geographic North American Numbering Plan (NANP) code covering Annapolis, Maryland. It has been in service since 21-Jun-1996 and sits in the Eastern (ET) time zone.

Overlay 443 shares its region

Several area codes cover the same geographic area, so two neighbours can have different codes. Because of the overlay, you must dial all 10 digits (area code + number) even for local calls.

443410667

How to dial a 443 number

From abroad+1 443 555-0123
Within the US / Canada1 443 555-0123
Locally (same area)443 555-0123

Cities in the 443 area code

A 443 number is usually in one of these places in Maryland — 6 counties.

Annapolis Anne ArundelArbutusArnold Anne ArundelBaltimore Anne Arundel;Baltimore;Baltimore CityBel Air NorthBel Air SouthCarneyCatonsville BaltimoreColumbia HowardCrofton Anne ArundelDundalk BaltimoreEdgewood HarfordEldersburgEllicott City HowardEssex BaltimoreGlen Burnie Anne ArundelLochearnMiddle River BaltimoreMilford MillOdenton Anne ArundelParkville BaltimorePerry Hall BaltimorePikesville BaltimoreRandallstown BaltimoreReisterstown BaltimoreSalisbury WicomicoSevern Anne ArundelSeverna Park Anne ArundelSouth GateTowson BaltimoreWest Elkridge

Other Maryland area codes

227240301410667

Frequently asked questions

Where is the 443 area code?

The 443 area code is in Annapolis, Maryland, United States (Eastern (ET)).

Is 443 an overlay area code?

Yes. 443 overlays the same region as 410, 667, so callers dial all 10 digits.

Do I have to dial 10 digits for 443?

Yes — dial the area code plus the seven-digit number.

How do I call a 443 number from another country?

Dial your exit code (or +), then 1, then 443, then the number: +1 443 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 443 number does not pinpoint a street or ZIP code.

Number holders in area code 443

Each prefix (the three digits after the area code) is assigned by NANPA to one telephone company. 800 prefixes are in use in 443, shared by 28 companies. The largest holders:

CompanyPrefixesShare
Paetec Itel, LLC15319%
Cellco Partnership Dba Verizon Wireless12115%
Omnipoint Communications Cap Operations, LLC9412%
New Cingular Wireless PCS, LLC719%
Level 3 Communications, LLC699%
Verizon Maryland, Inc.567%

Source: NANPA central office code assignments. A number keeps its original prefix when it is ported to another carrier.

Complaints about 443 numbers

Reports to the FTC, last 30 days
603
Recorded messages or robocalls
59%
Rank among area codes
#136 of 670
Most reported subjects
Other (275)
Dropped call or no message (92)
Calls pretending to be government, businesses, or family and friends (59)

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 443 — cities & rate centres

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