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AREA CODE · MARYLAND

Area code 443

Area code 443 covers Baltimore, Maryland. Map, time zone, overlays, carriers, the full list of prefixes and how to dial it.

State: Maryland Major City: Baltimore Eastern Time (ET) Overlay: 410/443/667
01 / WHERE IT IS

Where is area code 443?

Area code 443 is assigned to Baltimore and the surrounding region in Maryland. Calls to numbers that start with 443 are routed to this area.

Area code 443 shares its territory with 410, 667. Because it is an overlay, local calls require dialing all 10 digits.

Counties covered

Baltimore CountyBaltimore cityAnne Arundel CountyHarford CountyHoward CountyCarroll CountyCecil CountyWicomico County

Line types

  • Mobile 36.51%
  • Landline 63.49%
02 / MAP

Area code 443 on the map

The shaded area joins the code’s numbering centers; the marker shows its main city.

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© OpenStreetMap contributors

03 / LOCAL TIME

Current time in Baltimore

This area code is in the Eastern Time (ET) time zone.

Local timeBaltimore, MD--:--:--

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America/New_YorkLive
04 / HOW TO DIAL

How to call Baltimore

WITHIN THE US443 XXX XXXX

Always 10 digits — landline, mobile or VoIP. Local, long distance or a different state: the format is always the same. You do not need to dial the 1 first.

FROM ABROAD+1 443 XXX XXXX

Exit codes: 00 Europe/Mexico · 011 Canada · 010 Japan · + universal

WHATSAPP / IMESSAGE+1 443 XXX XXXX

Always save the number in international format so messaging apps recognize it correctly:

Call typeTraditional landlineMobile / VoIP
Local (same area code)10 digits10 digits
US long distance1 + 10 digits10 digits
Emergency911911
🌐Universal+1 443 555 0123
🇪🇸🇲🇽Spain / Mexico00 1 443 555 0123
🇦🇺Australia0011 1 443 555 0123
🇯🇵Japan010 1 443 555 0123
HAVE THE FULL NUMBER?

Learn more about that number.

Check the line type and the carrier the number block was originally assigned to.

10 digits to see the carrier and line type of the number

05 / CARRIERS

Carriers in area code 443

Share of the number blocks by carrier and line type.

Landline

Windstream Communications
31%
Lumen Technologies
15%
Verizon
11%
Verizon Business
11%
AT&T
10%
Others
22%

Mobile

Verizon Wireless
42%
T-Mobile USA
33%
AT&T Mobility
25%

Carrier shown is the original assignment of each number block and may differ today because of number portability.

06 / PREFIXES

Complete list of prefixes for area code 443

786 number blocks (NXX) assigned in this area code.

PrefixTypeCityCarrier
(443) 200 Landline Woodlawn Verizon BusinessMCIMETRO ACCESS TRANSMISSION SERVICES LLC
(443) 201 Mobile Westminster AT&T MobilityNEW CINGULAR WIRELESS PCS, LLC - DC
(443) 202 Mobile Baltimore Verizon WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
(443) 203 Landline West River VerizonVERIZON MARYLAND, INC.
(443) 204 Mobile Pikesville AT&T MobilityNEW CINGULAR WIRELESS PCS, LLC - DC
(443) 205 Mobile Cambridge Verizon WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
(443) 206 Mobile Perryville Verizon WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
(443) 207 Mobile Elkton T-Mobile USAOMNIPOINT COMMUNICATIONS ENTERPRISES, LP
(443) 208 Mobile Baltimore T-Mobile USAOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
(443) 209 Landline Havre de Grace Windstream CommunicationsPAETEC ITEL, LLC

Showing 10 of 786 prefixes

07 / FAQ

Frequently asked questions about area code 443

Where is area code 443 used?
Area code 443 serves Baltimore and the surrounding area in Maryland, including Baltimore County, Baltimore city, Anne Arundel County, Harford County, Howard County.
What city is area code 443 from?
The main city of area code 443 is Baltimore, MD.
What time zone is area code 443 in?
Area code 443 is in the Eastern Time (ET) time zone (America/New_York).
Is 443 an overlay area code?
Yes. It shares its territory with 410, 667. In an overlay, every call requires dialing all 10 digits.
How do I call a number with area code 443 from the United States?
Dial the 10 digits: 443 + 7-digit number. For some long-distance calls from a landline you may need to add a 1 first.
How do I call a 443 number from another country?
Dial your country's exit code (or +), then 1, then 443 and the seven-digit number. From a mobile you can use +1 443 XXX XXXX.
Which carriers use area code 443?
Most landline blocks belong to Windstream Communications and most mobile blocks to Verizon Wireless. The carrier shown is the original assignment and may differ today because of number portability.
Is area code 443 for landlines, mobiles or both?
Both. About 63.49% of the number blocks are landline, 36.51% mobile.
How do I save a 443 number in WhatsApp or my phone?
Save it in international format: +1 443 XXX XXXX. That way WhatsApp, iMessage and Telegram recognize it from any country.
Is it safe to answer calls from area code 443?
The area code only shows the region a number was assigned to; it does not tell you who is calling. Scammers can fake any area code, so do not share personal or banking information with unknown callers, and let unknown numbers go to voicemail.
KEEP EXPLORING

Nearby area codes

202Washington, DC771Washington, DC703Washington, VA571Washington, VA302Wilmington, DE717Lancaster, PA

Other area codes in Maryland

227 · Washington240 · Washington301 · Washington410 · Baltimore667 · Baltimore

View all Maryland area codes →