What does an area code page show?

It shows the broader region, available prefixes, and carrier or city clues linked to that area code.

How does an area code help reverse phone lookup?

It provides a geographic starting point before you investigate a specific full number.

Home / Area Codes / 443

Area Code Directory

Area Code 443

Browse available prefixes, locations, carriers, and quick path links into deeper phone number pages for this area code. Area-code research is one of the most important parts of reverse phone lookup because it gives visitors a geographic starting point before they inspect a full number.

Back to Area Codes Recent Reports

200Prefixes Listed

MarylandLocation

United StatesCountry

443Area Code

Area Code Overview

Area Code443

Primary LocationMaryland

CountryUnited States

Prefix Coverage200 listed prefixes

Prefixes in 443

443-200

Baltimore

Allegiance Telecom Inc. - Md

Landline

443-201

Windsor Mill

Cellco Partnership Dba Verizon Wireless - Md

Wireless

443-202

Windsor Mill

Cellco Partnership Dba Verizon Wireless - Md

Wireless

443-203

Baltimore

Verizon Maryland Inc.

Landline

443-204

Columbia

New Cingular Wireless Pcs Llc - Dc

Cellco Partnership Dba Verizon Wireless - Md

Wireless

443-207

Baltimore

Omnipoint Communications Enterprises L.p.

Cavalier Telephone Llc (mid-atlantic) - Md

Us Lec Of Maryland Inc.

Landline

443-213

Owings Mills

Verizon Maryland Inc.

Landline

443-214

Columbia

New Cingular Wireless Pcs Llc - Dc

Wireless

443-215

Easton

Core Communications Inc. - Md

Landline

443-216

Hanover

Cavalier Telephone Mid-atlantic Llc - Md

Landline

443-217

Baltimore

Core Communications Inc. - Md

Landline

443-218

Baltimore

Global Crossing Local Services Inc.-md

Landline

443-219

Baltimore

Level 3 Communications Llc - Md

Landline

443-220

Columbia

Verizon Maryland Inc.

Landline

443-221

Halethorpe

Level 3 Communications Llc - Md

Landline

443-222

Baltimore

Global Naps South Inc. - Md

Landline

443-223

Windsor Mill

Cellco Partnership Dba Verizon Wireless - Md

Wireless

443-224

Hanover

Mci Worldcom Communications Inc. - Md

Landline

443-225

Salisbury

Nextel Communications Inc.

Global Naps South Inc. - Md

Landline

443-228

Columbia

Us Lec Of Maryland Inc.

Landline

443-229

Hanover

Cavalier Telephone Mid-atlantic Llc - Md

Landline

443-230

Baltimore

Global Naps South Inc. - Md

Cavalier Telephone Llc (mid-atlantic) - Md

Landline

443-233

Salisbury

Cavalier Telephone Llc (mid-atlantic) - Md

Landline

443-234

Salisbury

Cavalier Telephone Llc (mid-atlantic) - Md

Landline

443-235

Salisbury

Cellco Partnership Dba Verizon Wireless - Md

Wireless

443-236

Baltimore

Core Communications Inc. - Md

Landline

443-237

Baltimore

Core Communications Inc. - Md

Landline

443-238

Baltimore

Global Naps South Inc. - Md

Landline

443-239

Salisbury

New Cingular Wireless Pcs Llc - Dc

Wireless

443-240

Columbia

New Cingular Wireless Pcs Llc - Dc

Wireless

443-241

Baltimore

Global Naps South Inc. - Md

Landline

443-242

Hanover

Cavalier Telephone Mid-atlantic Llc - Md

Landline

443-243

Windsor Mill

Cellco Partnership Dba Verizon Wireless - Md

Wireless

443-244

Windsor Mill

Level 3 Communications Llc - Md

Landline

443-245

Bel Air

Cavalier Telephone Llc (mid-atlantic) - Md

Landline

443-246

Baltimore

Core Communications Inc. - Md

Landline

443-247

Baltimore

Global Naps South Inc. - Md

Landline

443-248

Baltimore

Cellco Partnership Dba Verizon Wireless - Md

Wireless

443-249

Stevensville

Verizon Maryland Inc.

Cellco Partnership Dba Verizon Wireless - Md

Wireless

443-252

Windsor Mill

Cellco Partnership Dba Verizon Wireless - Md

Wireless

443-253

Columbia

New Cingular Wireless Pcs Llc - Dc

Wireless

443-254

Baltimore

Omnipoint Communications Cap Operations Llc

Wireless

443-255

Columbia

New Cingular Wireless Pcs Llc - Dc

Wireless

443-256

Baltimore

Global Naps South Inc. - Md

Landline

443-257

Windsor Mill

Cellco Partnership Dba Verizon Wireless - Md

Wireless

443-258

Salisbury

New Cingular Wireless Pcs Llc - Dc

Wireless

443-259

Columbia

Verizon Maryland Inc.

Landline

443-260

Delmar

Verizon Maryland Inc.

Landline

443-261

Hanover

Mci Worldcom Communications Inc. - Md

Landline

443-262

Centreville

Verizon Maryland Inc.

Landline

443-263

Baltimore

Verizon Maryland Inc.

Landline

443-264

Baltimore

Global Naps South Inc. - Md

Landline

443-265

Hanover

Cavalier Telephone Mid-atlantic Llc - Md

Landline

443-266

Baltimore

Global Crossing Local Services Inc.-md

Landline

443-267

Baltimore

Teleport Communications America Llc - Md

Landline

443-268

Baltimore

Core Communications Inc. - Md

Landline

443-269

Baltimore

Global Naps South Inc. - Md

Landline

443-270

Baltimore

Paetec Communications Inc. - Md

Teleport Communications America Llc - Md

Landline

443-273

Columbia

Teleport Communications America Llc - Md

Landline

443-274

Crofton

Verizon Maryland Inc.

Landline

443-275

Nottingham

Comcast Phone Of Northern Maryland Inc. - Md

Landline

443-276

Baltimore

Allegiance Telecom Inc. - Md

Landline

443-277

Hanover

Sprint Spectrum L.p. - Md

Wireless

443-278

Hanover

Vdl Inc. Dba Global Telecom Brokers - Md

Landline

443-279

Baltimore

Allegiance Telecom Inc. - Md

Landline

443-280

Columbia

New Cingular Wireless Pcs Llc - Dc

Wireless

443-281

Baltimore

Allegiance Telecom Inc. - Md

Paetec Communications Inc. - Md

Landline

443-284

Baltimore

Global Naps South Inc. - Md

Landline

443-285

Columbia

Verizon Maryland Inc.

Landline

443-286

Windsor Mill

Cellco Partnership Dba Verizon Wireless - Md

Wireless

443-287

Baltimore

Verizon Maryland Inc.

Landline

443-288

Baltimore

Allegiance Telecom Inc. - Md

Landline

443-289

Hanover

Mci Worldcom Communications Inc. - Md

Landline

443-290

Laurel

Tw Telecom Of Maryland Llc - Md

Landline

443-291

Baltimore

Global Crossing Local Services Inc.-md

Landline

443-292

Baltimore

Level 3 Communications Llc - Md

Landline

443-293

Baltimore

Global Crossing Local Services Inc.-md

Landline

443-294

Baltimore

Global Crossing Local Services Inc.-md

Landline

443-295

Baltimore

Level 3 Communications Llc - Md

Landline

443-296

Baltimore

Global Crossing Local Services Inc.-md

Landline

443-297

Baltimore

Teleport Communications America Llc - Md

Landline

443-298

Salisbury

New Cingular Wireless Pcs Llc - Dc

Wireless

443-299

Baltimore

Global Crossing Local Services Inc.-md

Landline

443-300

Baltimore

Broadwing Communications. Llc - Md

Landline

443-301

Columbia

New Cingular Wireless Pcs Llc - Dc

Wireless

443-302

Baltimore

Global Crossing Local Services Inc.-md

Landline

443-303

Baltimore

Global Crossing Local Services Inc.-md

Landline

443-304

Baltimore

Global Crossing Local Services Inc.-md

Landline

443-305

Baltimore

Global Crossing Local Services Inc.-md

Global Crossing Local Services Inc.-md

Landline

443-308

Baltimore

Allegiance Telecom Inc. - Md

New Cingular Wireless Pcs Llc - Dc

Wireless

443-312

Baltimore

Global Crossing Local Services Inc.-md

Landline

443-313

Baltimore

Global Crossing Local Services Inc.-md

Global Crossing Local Services Inc.-md

Landline

443-316

Baltimore

Global Crossing Local Services Inc.-md

Landline

443-317

Baltimore

Global Crossing Local Services Inc.-md

Landline

443-318

Bel Air

Cavalier Telephone Llc (mid-atlantic) - Md

Landline

443-319

Bel Air

Cavalier Telephone Llc (mid-atlantic) - Md

Landline

443-320

Baltimore

Global Crossing Local Services Inc.-md

Landline

443-321

Baltimore

Paetec Communications Inc. - Md

Landline

443-322

Hanover

Cavalier Telephone Mid-atlantic Llc - Md

Landline

443-323

Salisbury

Cavalier Telephone Llc (mid-atlantic) - Md

Cavalier Telephone Mid-atlantic Llc - Md

Landline

443-326

Columbia

New Cingular Wireless Pcs Llc - Dc

Wireless

443-327

Nottingham

Cavalier Telephone Mid-atlantic Llc - Md

Landline

443-328

Baltimore

Global Naps South Inc. - Md

Landline

443-329

Unknown City

Global Crossing Local Services Inc.-md

Landline

443-330

Hanover

Cavalier Telephone Mid-atlantic Llc - Md

Landline

443-331

Baltimore

Global Naps South Inc. - Md

Landline

443-332

Hanover

Cavalier Telephone Mid-atlantic Llc - Md

Landline

443-333

Halethorpe

Leap Wireless Intl Inc. Dba Cricket Comm Inc.

Wireless

443-334

Baltimore

Allegiance Telecom Inc. - Md

Landline

443-335

Baltimore

Global Naps South Inc. - Md

Global Naps South Inc. - Md

Landline

443-338

Baltimore

Global Naps South Inc. - Md

Landline

443-339

Baltimore

Global Naps South Inc. - Md

Landline

443-340

Windsor Mill

Cellco Partnership Dba Verizon Wireless - Md

Wireless

443-341

Baltimore

Level 3 Communications Llc - Md

Landline

443-342

Baltimore

Global Naps South Inc. - Md

Landline

443-343

Baltimore

Teleport Communications America Llc - Md

Landline

443-344

Baltimore

Core Communications Inc. - Md

Landline

443-345

Baltimore

Level 3 Communications Llc - Md

Landline

443-346

Baltimore

Global Naps South Inc. - Md

Landline

443-347

Baltimore

Global Naps South Inc. - Md

Landline

443-348

Baltimore

Teleport Communications America Llc - Md

Landline

443-349

Baltimore

Core Communications Inc. - Md

Landline

443-350

North East

Cellco Partnership Dba Verizon Wireless - Md

Wireless

443-351

Columbia

Us Lec Of Maryland Inc.

Verizon Maryland Inc.

Landline

443-354

Baltimore

Level 3 Communications Llc - Md

Landline

443-355

Baltimore

Level 3 Communications Llc - Md

Landline

443-356

Halethorpe

Level 3 Communications Llc - Md

Landline

443-357

Pikesville

Verizon Maryland Inc.

Landline

443-358

Salisbury

Ymax Communications Corp. - Md

Landline

443-359

Salisbury

Cellco Partnership Dba Verizon Wireless - Md

Wireless

443-360

Baltimore

Teleport Communications America Llc - Md

Landline

443-361

Baltimore

Core Communications Inc. - Md

Landline

443-362

Salisbury

Omnipoint Communications Cap Operations Llc

Wireless

443-363

Baltimore

Global Naps South Inc. - Md

Landline

443-364

Baltimore

Teleport Communications America Llc - Md

Landline

443-365

Salisbury

Omnipoint Communications Cap Operations Llc

Verizon Maryland Inc.

Landline

443-368

Baltimore

Core Communications Inc. - Md

Landline

443-369

Baltimore

Core Communications Inc. - Md

Landline

443-370

Columbia

New Cingular Wireless Pcs Llc - Dc

Wireless

443-371

Baltimore

Broadwing Communications. Llc - Md

Landline

443-372

Columbia

Us Lec Of Maryland Inc.

Cavalier Telephone Llc (mid-atlantic) - Md

Landline

443-375

Hanover

Sprint Spectrum L.p. - Md

Wireless

443-376

Baltimore

Teleport Communications America Llc - Md

Landline

443-377

Windsor Mill

Cellco Partnership Dba Verizon Wireless - Md

Comcast Phone Of Northern Maryland Inc. - Md

Landline

443-380

Gwynn Oak

Level 3 Communications Llc - Md

Landline

443-381

Baltimore

Global Naps South Inc. - Md

Landline

443-382

Easton

Core Communications Inc. - Md

Landline

443-383

Baltimore

Global Naps South Inc. - Md

Landline

443-384

Hanover

Cavalier Telephone Mid-atlantic Llc - Md

Landline

443-385

Easton

Core Communications Inc. - Md

Landline

443-386

Windsor Mill

Cellco Partnership Dba Verizon Wireless - Md

Wireless

443-387

Easton

Core Communications Inc. - Md

Landline

443-388

Windsor Mill

Cellco Partnership Dba Verizon Wireless - Md

Wireless

443-389

Easton

Core Communications Inc. - Md

Landline

443-390

Baltimore

Global Crossing Local Services Inc.-md

Landline

443-391

Baltimore

Global Crossing Local Services Inc.-md

Global Crossing Local Services Inc.-md

Landline

443-394

Owings Mills

Verizon Maryland Inc.

Landline

443-395

Aberdeen

Verizon Maryland Inc.

Landline

443-396

Baltimore

Global Crossing Local Services Inc.-md

Landline

443-397

Salisbury

Cellco Partnership Dba Verizon Wireless - Md

Wireless

443-398

Hanover

Sprint Spectrum L.p. - Md

Wireless

443-399

Baltimore

Global Crossing Local Services Inc.-md

Cellco Partnership Dba Verizon Wireless - Md

Wireless

Top prefixes in this area code

443-200→443-201→443-202→443-203→443-204→443-205→443-206→443-207→

Why area code pages matter in reverse phone lookup

Area code pages help visitors understand the wider calling region connected to a number. While a full reverse phone lookup page focuses on one specific caller, an area code page shows the bigger picture by grouping prefixes, cities, and carrier patterns under the same first three digits. This makes it easier to spot whether a number appears local, regional, or part of a service area the visitor already recognizes.

For phone directory websites, area code pages also improve browsing. A user can start with a missed call, discover the number's first three digits, and then move into the related area code to see supporting location data and a list of active prefixes. That layered navigation creates a better research experience and gives visitors more confidence when they continue into a specific number page.