Position your business in America's biomedical capital with a 301 virtual number — suburban Maryland's NIH, FDA, and Montgomery County biotech corridor, just outside Washington DC. Activate instantly, no hardware.
Area code 301 covers suburban Maryland — Montgomery County, Prince George's County, Charles County, Calvert County, and St. Mary's County — directly bordering Washington DC. This corridor is one of the most federally and scientifically concentrated regions in the US: the National Institutes of Health campus in Bethesda is the world's largest biomedical research centre, NASA's Goddard Space Flight Center is in Greenbelt, and the National Geospatial-Intelligence Agency operates in the region. Montgomery County alone is home to more than 50 biotech and life sciences companies, making the 301 zone one of the nation's premier biomedical clusters outside of San Francisco and Boston. The US Food and Drug Administration's main campus is also within the 301 footprint.
From Baltimore to Glen Burnie 301 covers the Mid-Atlantic region of Maryland.
The National Institutes of Health campus in Bethesda employs 20,000+ and funds billions in biomedical research annually. Pharmaceutical, biotech, and research services companies need a local 301 number to credibly engage NIH's vast grant and contractor community.
Montgomery County is one of the nation's premier biotech corridors, hosting AstraZeneca, Human Genome Sciences, and 50+ life sciences companies. A local 301 number signals authentic presence to this densely concentrated cluster of pharmaceutical and clinical research organisations.
The US Food and Drug Administration's main campus in White Oak, Maryland, is within the 301 footprint. Regulatory affairs consulting, clinical trial services, and compliance technology firms benefit from a 301 number when engaging FDA's extensive contractor and stakeholder community.
NASA's Goddard Space Flight Center in Greenbelt employs thousands of scientists and engineers focused on Earth observation and space science. Aerospace contractors and technology vendors need a local 301 number to engage Goddard's substantial procurement network.
Every 301 number delivers fourteen professional tools for suburban Maryland's federal-and-biotech economy — compliance call recording for NIH's and FDA's contractor requirements, advanced routing for Montgomery County's biotech cluster, and analytics for the DC Maryland commuter corridor.
Redirect every call to any device — mobile, desk phone, or laptop. Set rules by time, caller, or team.
Four steps. Five minutes. No technical setup, no hardware required.
Browse 301 numbers by Bethesda, Silver Spring, or Prince George's County prefix — or port your existing Maryland number for free.
Select a plan for your suburban Maryland team — NIH vendor, Montgomery County biotech firm, or FDA contractor, every feature included.
Configure your 301 line with Eastern Time routing and compliance recording for NIH's grant calendar and Montgomery County's regulated biotech schedule.
Take 301 calls anywhere — NIH's contractor community, Montgomery County's biotech cluster, and the DC Maryland corridor all see a trusted local number.
Pick a region, then select any state to see every active area code with city coverage, time zones, and a number-picker shortcut.
Everything you need to know before getting a virtual 301 phone number. Our team is one click away for anything else.
The 301 area code was introduced in 1995 and serves the Mid-Atlantic region of Maryland.
Yes. Every TKOS 301 number supports two-way SMS and MMS. Send and receive texts from the web dashboard, mobile app, or desktop — using the same 301 number your customers already know.
Yes. TKOS supports simultaneous ring, call queuing, and user extensions on every 301 number — so your whole team can share one number while each member handles calls from their own device.
Yes. Every TKOS 301 number includes a drag-and-drop IVR auto-attendant. Build multi-level phone menus — press 1 for sales, 2 for support — without any coding or IT help.
Yes — porting your existing 301 number to TKOS is completely free. Most Maryland port-ins complete in 5–10 business days with zero downtime, and your 301 calls keep routing normally throughout the transition.
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