301 Area Code: Maryland DC Scam | Who Sent That Text Message

Key Information

Area Code Overview

Area code 301 is one of Maryland's original 1947 area codes, historically covering the entire state. Today it serves the Maryland DC suburbs — primarily Montgomery County and Prince George's County — along with Southern Maryland (Charles, St. Mary's, and Calvert counties). Overlay code 240 was added in 1997 as the 301 pool was exhausted by the explosive growth of the DC metro corridor.

Montgomery County is one of the wealthiest counties in the United States and anchors a uniquely dense concentration of federal government infrastructure. The National Institutes of Health (NIH) main campus occupies 322 acres in Bethesda. The Food and Drug Administration (FDA) headquarters is in Silver Spring. The National Institute of Standards and Technology (NIST) is in Gaithersburg. Dozens of additional federal agencies and their associated contractor ecosystems span the county's I-270 technology corridor. Prince George's County hosts the University of Maryland College Park, NASA Goddard Space Flight Center, and a large federal workforce in communities including College Park, Hyattsville, and Bowie. The combined effect is a county pair with an extraordinarily high proportion of residents holding federal employment, security clearances, and advanced technical credentials.

Scam Patterns in 301

Federal Contractor and Security Clearance Phishing
Montgomery County and the I-270 corridor host one of the largest concentrations of federal government contractors in the country — defense contractors, IT services firms, consulting companies, and biotech organizations whose business depends on federal contracts and cleared personnel. Security clearances are economically significant: a Top Secret/SCI clearance adds material value to a resume, and clearance adjudication involves extensive personal financial and background information. Scam texts from 301 numbers target this workforce with two primary variants. The first impersonates a federal agency HR office or contracting officer, claiming a clearance renewal requires online identity verification through a link in the message. The second impersonates a defense contractor's internal IT security team, claiming a VPN or PIV card token has expired and must be revalidated through a portal. Neither federal agencies nor contractors handle clearance matters or access credential renewals through unsolicited text links. Security clearance renewals are managed through DCSA's eApp system at nbis.mil; access credential issues are resolved through your organization's security officer in person.

NIH and Federal Grant Application and Award Notification Fraud
The NIH in Bethesda is the largest funder of biomedical research in the world, distributing tens of billions of dollars in grants annually to researchers, universities, and institutions nationwide. The surrounding 301 community includes thousands of NIH employees, grantees, and research contractors who are legitimately engaged with the grant application and award process. Scam texts from 301 numbers impersonate NIH program officers or grants management staff, claiming that a pending grant application requires additional documentation at a link, that an award notification has been issued pending banking information for electronic funds transfer, or that a grantee is eligible for a supplemental funding opportunity. A variant targets early-career researchers at the University of Maryland and other regional institutions, impersonating NIH study sections or review panels. The NIH communicates with applicants and grantees through the official eRA Commons system at era.nih.gov and through official .gov email addresses — not through unsolicited texts. Award payments are coordinated through institutional grants offices, not through individual banking information collected via text.

WSSC Water Disconnection and Billing Fraud
WSSC Water (Washington Suburban Sanitary Commission) is the water and sewer utility serving Montgomery and Prince George's counties — approximately 1.9 million people across both counties depend on WSSC for water service. Because WSSC is a combined water and sewer utility with no electric alternative, a disconnection threat carries high urgency: losing water service to a home or business is immediately disruptive. Scam texts from 301 numbers impersonate WSSC claiming an account is severely delinquent and that service will be disconnected unless payment is made through a link in the message. A variant targets commercial accounts and property managers with larger alleged balances and shorter ultimatums. WSSC does send service notifications by text, but it does not collect payments through links in unsolicited text messages. Account status and payment are accessible at wsscwater.com or by calling the customer service number on your bill.

VoIP and Spoofing Risk Assessment

Risk Level: MOD

301 covers a large suburban territory with a highly educated, high-income population that is disproportionately engaged with federal systems — clearances, grants, and federal utilities — where the consequences of non-compliance feel serious and the processes are genuinely complex. The federal contractor and clearance phishing vector is particularly targeted: recipients are accustomed to security-sensitive communications, which makes an authoritative-sounding message about credential verification feel plausible rather than alarming. NIH grant fraud exploits the genuine high-stakes nature of grant funding for researchers whose careers depend on it. WSSC fraud follows the same seasonal utility disconnection pattern seen across the mid-Atlantic region.

What To Do If You Receive a Text From a 301 Number

Handle clearance and federal credential matters through official channels only. Clearance renewals and access credential issues are managed through your organization's security officer, DCSA at nbis.mil, or your agency's official IT helpdesk — never through a link in an unsolicited text. When in doubt, contact your facility security officer in person.
Look up the number. Search at Who Sent That Text Message to check for prior reports of federal impersonation, NIH grant fraud, or WSSC billing scams before taking any action.
Check your WSSC account directly at wsscwater.com. If you're concerned about a past-due balance, log in through the official WSSC portal or call the customer service number on your paper bill. See our guide on how to identify spoofed text messages for more on utility disconnection and government impersonation fraud patterns.
Report the text. Forward to 7726 (SPAM). File with the FTC at reportfraud.ftc.gov. For NIH or federal agency impersonation, report to the relevant agency's Inspector General — NIH OIG at oig.hhs.gov. For security clearance-related phishing, report to DCSA or your agency's security officer.

Frequently Asked Questions

What area code is 301?
Area code 301 serves Maryland's DC suburbs, primarily Montgomery and Prince George's Counties, along with Southern Maryland. Communities served include Silver Spring, Bethesda, Rockville, Gaithersburg, Germantown, College Park, and Waldorf. It is one of Maryland's original 1947 area codes, sharing Montgomery and Prince George's County coverage with overlay 240 added in 1997.

Is area code 301 used for scams?
301 is a legitimate Maryland area code used by residents, federal agencies, healthcare institutions, and businesses. Documented scam patterns include federal contractor and security clearance phishing targeting the large cleared workforce, NIH and federal grant award notification fraud, and WSSC Water disconnection and billing fraud. Verify any 301 text involving security credentials, grant funding, or utility payments before responding.

Why does the federal contractor workforce in the 301 area code attract scammers?
The I-270 corridor and surrounding Montgomery County communities host one of the densest concentrations of security-cleared federal contractors in the country. Clearances involve extensive personal information and carry significant career and financial value — making clearance-related communications feel high-stakes. Contractors are also accustomed to navigating complex official systems, which makes an authoritative message about credential revalidation feel procedurally normal rather than suspicious. The combination of high-value targets, familiarity with official bureaucratic processes, and the genuine complexity of federal systems creates an effective social engineering environment.

Related Area Codes

240 — Montgomery and Prince George's County overlay, added in 1997. Covers identical geography to 301; newer numbers in the Maryland DC suburbs frequently carry 240.
202 — Washington, DC. The federal capital immediately adjacent to the 301 footprint across the DC border.
410 — Baltimore and central Maryland (Baltimore City, Baltimore County, Anne Arundel County). The other major Maryland metro area code to the northeast.

Carriers & Network Type for 301 Numbers

Common Scam Patterns

If You Got a Text from 301

Who Typically Calls from the 301 Area Code?

Area code 301 covers Western Maryland, Maryland, a metropolitan market with a diverse mix of mobile, landline, and VoIP subscribers across residential and commercial accounts. Primary carriers include AT&T Mobility, Verizon Wireless, and T-Mobile USA. The area encompasses Silver Spring and Bethesda and operates in the Eastern time zone, supporting a broad range of modern telecommunications services. Calls from 301 numbers originate in Western Maryland, Maryland. Residents, local businesses, schools, medical offices, and government agencies in this region all use 301 numbers. If you received an unexpected call or text from a 301 number, it may be a neighbor, a local service provider, or — in some cases — an unwanted solicitor.

Because 301 is a legitimate, widely used area code, scammers sometimes spoof it to make their calls appear local and trustworthy. This technique — called neighbor spoofing — makes it more likely that recipients will answer. A reverse phone lookup is the fastest way to find out whether a 301 number is genuinely local or spoofed.

Is a 301 Phone Number Spam?

Not all 301 calls are spam, but the area code is not immune to robocall campaigns and phone scams. Common complaints about 301 numbers include warranty extension scams, debt collection harassment, IRS impersonation calls, and unsolicited insurance offers.

If a 301 number called you and didn't leave a voicemail, that's a red flag — legitimate callers typically leave a message. Use Who Sent That Text Message to look up the number instantly and see whether other users have flagged it as spam.

You can also report a suspicious 301 number directly from our lookup results, helping protect others in the community from the same caller.

Look Up a 301 Number Now

Enter any 301 area code phone number below and get instant results — carrier, line type, caller name (where available), and spam reports submitted by real users.

Other Area Codes in Maryland

Maryland has multiple area codes serving different regions. If the number you received isn't from 301, check one of the other Maryland area codes below.

301 Area Code — Western Maryland, Maryland

About the 301 Area Code