Get a local business phone number in Oakland, MD
Oakland's area codes, prefixes and carriers from NANPA records, and how to put a Oakland number in front of your customers.
- Area code
- 301 / 240 / 227
- Exchanges
- 15NANPA-assigned
- Carriers
- 9
- Population
- 1,813Census 2024 est.
What area code is Oakland, MD?
With 1,813 residents in the Census 2024 estimate, Oakland sits in Garrett County, Maryland. NANPA lists 15 exchanges for its rate center across 3 area codes; 301 has the most (8, 53%). 301 is part of an overlay with 240 and 227, so a new local number in Oakland may carry any of those codes depending on which have numbers available. Oakland is in the Eastern time zone.
According to NANPA's dialing-plan data, local calls within 301 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
Who holds Oakland phone exchanges
9 carriers hold the 15 exchanges assigned to Oakland's rate center. Verizon Maryland, INC. has the most, with 4. 12 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. Holding a code means NANPA assigned that block of numbers to the carrier for this rate center; individual numbers may since have been ported elsewhere.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Verizon Maryland, INC. | 4 | 27% |
| Onvoy, LLC - MD | 2 | 13% |
| Uscoc of Cumberland, INC. d/b/a United States Cel MD | 2 | 13% |
| Bandwidth.com CLEC, LLC - MD | 2 | 13% |
| Core Communications, Inc.- MD | 1 | 6.7% |
| Shentel Communications, LLC. - MD | 1 | 6.7% |
| New Cingular Wireless PCS, LLC - DC | 1 | 6.7% |
| Level 3 Communications, LLC - MD | 1 | 6.7% |
| Mountain Communications, LLC d/b/a Procom - MD | 1 | 6.7% |
Carrier names are the operating company (OCN) names on NANPA's utilized central office code file dated 10/01/2026. A carrier holding a code may port numbers to other carriers.
Oakland phone prefixes
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Oakland. The earliest assignment date recorded in the file for these codes is 2001. 3 of the 15 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 227 | 272 |
| 240 | 212, 226, 321, 442, 488, 785 |
| 301 | 334, 387, 501, 533, 616, 849, 859, 914 |
Source: NANPA utilized central office code file.
When Oakland's exchanges were assigned
The table groups Oakland's exchanges by the decade NANPA recorded them as assigned.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 2 | 29% |
| 2010s | 2 | 29% |
| 2020s | 3 | 43% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
Rate centers and local calling in Oakland
NANPA ties every exchange to a rate center. For Oakland that is OAKLAND, so a number from one of these exchanges reads as local to people in and around Oakland.
Keeping an existing Oakland number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 301 when you pick it.
Businesses around Oakland
Oakland is outside any Census metro or micropolitan area, so the figures below are statewide. County Business Patterns counted 142,967 business establishments in Maryland in 2023, employing 2,468,367 people. The largest sectors by establishment count are professional, scientific, and technical services (21,699), health care and social assistance (18,859), and retail trade (16,687).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 5,487 | 91,593 | 16.7 |
| Full-service restaurants | 3,803 | 90,952 | 23.9 |
| Physician practices | 3,756 | 49,992 | 13.3 |
| Residential remodelers | 3,183 | 12,417 | 3.9 |
| Law offices | 2,615 | 16,849 | 6.4 |
| Dental offices | 2,561 | 19,303 | 7.5 |
| Management consulting firms | 2,466 | 34,791 | 14.1 |
| Computer systems design services firms | 2,327 | 36,048 | 15.5 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
A Oakland number on Callata
Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and E911 on every number.
Porting a number you already use in Oakland is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.
AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.
Per-seat phone plans multiply by headcount. For the rounded average establishment size in Maryland, 17 users on RingCentral RingEX Core come to $510.00 a month and on Ooma Office Pro $424.15, at month-to-month list prices checked September 28, 2026. Callata comes to $339.00 a month for 17 users ($99 a month with 5 users included, then $20 per additional user), below both.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $339.00 | $4,068.00 |
| Quo (Starter) | $19.00 per user | $323.00 | $3,876.00 |
| Nextiva (Core) | $23.00 per user | $391.00 | $4,692.00 |
| Ooma (Office Pro) | $24.95 per user | $424.15 | $5,089.80 |
| Dialpad (Standard) | $27.00 per user | $459.00 | $5,508.00 |
| RingCentral (RingEX Core) | $30.00 per user | $510.00 | $6,120.00 |
Competitor prices are each vendor's published month-to-month list price per user for its lowest plan that includes business calling and texting, checked September 28, 2026: Quo Starter $19, Nextiva Core $23, Ooma Office Pro $24.95 (Essentials excludes texting; one-time $29.95 activation not included), Dialpad Standard $27, RingCentral RingEX Core $30 ($20 billed annually). Prices exclude taxes and fees and may change; annual contracts lower some competitors' prices.
Frequently asked questions
What area code is Oakland, MD?
Oakland has exchanges in 301, 240, and 227; 301 has the most.
How many phone companies have exchanges in Oakland?
9, holding 15 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Oakland business number?
Yes. Porting an existing number to Callata is free. Texting from it starts after carrier registration (10DLC), a one-time $49 fee.
How much is a business phone line in Oakland?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 17 users come to $339.00 a month. For comparison, 17 users on RingCentral RingEX Core list at $510.00 a month (checked September 28, 2026).