The 301 area code covers Rockville, Gaithersburg, Frederick and more in Maryland. Provision a local 301 number in minutes.
Area code 301 is one of Maryland's original 1947 codes, covering the western suburbs of Washington DC including Montgomery and Prince George's Counties. These counties are among the most populous and prosperous in the US due to proximity to the federal government and its contractors. It now shares its territory with overlay code 240.
Across Maryland, the 301 area code serves roughly 1.4 million residents in 4 communities — including Rockville, Gaithersburg, Frederick, among others. Numbers in the 301 zone keep Easterntime, so a local line rings during your customers' business hours and shows a familiar MD caller ID on every outbound call.
301 was first introduced in 1947 under the North American Numbering Plan. It remains an active geographic code today.
Want a 301 number of your own? With Ajoxi you can claim one in minutes — no hardware, no contracts — and route calls, SMS, voicemail, and team messaging anywhere on a single UCaaS platform, with Tier-1 routing and clean caller-ID delivery on every line.
The 301 area code reaches 4 communities across Maryland, from Rockville to Waldorf. A customer in any of them sees a familiar local number when you call, which is the single biggest driver of answer rates — and with Ajoxi you can claim a number in any of these cities, or several at once, and route every call to the same team.
Pair a local Rockville presence with enterprise-grade UCaaS — calling, meetings, and messaging on one platform.
Get a 301 NumberA 301 number tells Rockville customers you're local — instant trust and higher answer rates, no office required.
Every 301 line includes HD calling, video meetings, team chat, SMS/MMS, auto-attendant, call recording, and an AI assistant.
Already have a 301 number? Port it in for free. Your number stays yours — port out anytime, no lock-in.
The 301 area code covers Rockville, Gaithersburg, Frederick, Waldorf in Maryland.
Phone numbers in the 301 area code operate on America/New_York time.
Yes. The 301 area code was introduced in 1947 and remains an active geographic code today.
Yes. Ajoxi provisions virtual 301 numbers with instant activation, clean caller-ID delivery, Tier-1 routing, and no setup fees — so you can build a local presence in minutes.
Choose a 301 number in the Ajoxi dashboard and it activates immediately — no hardware, no contracts, and no setup fees. Prefer to keep a number you already use? Port any existing 301 number in for free, usually within a few business days and with no downtime during the switch.
Yes. Every 301 number supports SMS and MMS alongside HD calling, so your team can text customers, run campaigns, and reply to conversations from the same line — all in the browser on any device, with no separate app to install.
Предоставление 301 номер с мгновенной активацией, чистым идентификатором вызывающего абонента и маршрутизацией уровня 1 — без платы за установку, в течение нескольких минут.