Area code 443 was introduced in 1997 and serves Eastern MD (overlay), covering cities like Baltimore, Annapolis, Bel Air. It sits in the Eastern (ET) zone and reaches a population of roughly 3.0M+.
With MeraTalk, you can get a 443 number for Maryland in minutes and run all your calls over the internet from any device.
A 443 number gives your business a genuine local footing in Maryland, and the benefits go well beyond a familiar caller ID.
Outbound reps dial Eastern MD (overlay) prospects from a number those prospects recognize. A familiar 443 caller ID gets the conversation started instead of going to voicemail.
Give your Eastern MD (overlay) customers a local number to call for help. Calls route to your support team wherever they sit, with queues, schedules, and an AI receptionist after hours.
Your team doesn't need to live in Maryland to answer a 443 number. Calls ring on laptops and mobiles anywhere, while customers see a hometown business.
Pair your 443 number with local numbers in other markets you serve. Each location keeps its own identity while every call lands in one shared MeraTalk workspace.
Area codes are added as a region's demand for phone numbers grows. Here's when each Maryland code came online — and where 443 fits in.
301 was the first of Maryland's current codes, assigned to Western Maryland and anchored by Rockville. It remains the code most residents associate with Rockville and Gaithersburg.
As Eastern Maryland grew, 410 was introduced to keep up with demand for new numbers around Baltimore and Annapolis. Existing numbers kept their codes — 410 simply opened fresh inventory for the area.
As Western Maryland (overlay) grew, 240 was introduced to keep up with demand for new numbers around Rockville and Gaithersburg. Existing numbers kept their codes — 240 simply opened fresh inventory for the area.
As Eastern MD (overlay) grew, 443 was introduced to keep up with demand for new numbers around Baltimore and Annapolis. Existing numbers kept their codes — 443 simply opened fresh inventory for the area.
As Baltimore (overlay) grew, 667 was introduced to keep up with demand for new numbers around Baltimore and Towson. Existing numbers kept their codes — 667 simply opened fresh inventory for the area.
Make and receive calls and texts from your 443 number on desktop, mobile, or desk phone. One number for everything — no app-switching, no confusion.
Answers, screens, and routes every call to your 443 number around the clock — even when your team is offline or busy.
Every call and text to your 443 number is visible to the whole team — anyone can pick up, reply, or follow up.
Missed calls become readable transcripts delivered to your inbox.
Route Eastern MD (overlay) callers to the right person on your schedule.
Already have a 443 number? Bring it — porting is on every plan.
5 area codes covering Maryland
Area code 443 is part of the North American Numbering Plan (NANP) — the system that assigns three-digit codes to geographic regions across the US, Canada, and parts of the Caribbean. Code 443 was assigned to Eastern MD (overlay) and serves Baltimore and Annapolis as its primary markets.
When a call is made to a 443 number, the carrier routes it through the Eastern (ET) time zone switching network. This also means that when customers see a 443 number on their caller ID, they immediately associate it with Eastern MD (overlay) — before the call is even answered.
The area code on your caller ID shapes how customers in Eastern MD (overlay) decide whether to pick up or ignore your call.
Calls from a local 443 number are far more likely to be answered than calls from an out-of-state or toll-free number. Customers in Eastern MD (overlay) recognise the code and trust it as local.
A 443 number tells prospects in Maryland that you operate in their market — even if your team is fully remote or based elsewhere. First impressions happen before the first word.
With a cloud-hosted 443 number, your team can answer calls from any device, in any location. The local area code stays consistent while your team stays flexible.
Northeast listed first
Explore other Northeast area codes and find the right local number for every market you serve.
Set up your 443 number on MeraTalk, compare other US area codes, or read the public record for Eastern MD (overlay).
Read the in-depth guide to the 443 area code — coverage, history, cities, time zone and how to get a number.
On MeraTalkRun your 443 number on a full business phone system — calls, SMS, routing and an AI receptionist included.
On MeraTalkBrowse every US area code by state and find the right local number for the markets you serve.
External referenceSee the FCC's area code relief regulation (47 CFR §52.19) governing how area code 443 and every US area code is administered.
Same product, same support, same compliance on every plan. The AI receptionist is included from day one.
