🇺🇸 227 area code
Area code 227 covers Frederick, Rockville, Gaithersburg and Hagerstown and the surrounding area in Maryland. It shares that territory with 240 and 301, so the same neighbourhood can have numbers in any of them. Enter a 227 number below for a free check before you call back.
- Location: Frederick, Maryland
- Time zone: Eastern (UTC−5)
- In service since June 14, 2023
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Area code 227 at a glance
- Area code
- 227
- Location
- Maryland, United States
- Main cities
- Frederick, Rockville, Gaithersburg, Hagerstown, Bethesda, Silver Spring
- Time zone
- Eastern (UTC−5)
- Local time now
- —
- In service since
- June 14, 2023
- Created from
- 301
- Overlay codes
- 240, 301
- Local calls
- Dial 10 digits
- Number format
- (227) 555-0123
- From abroad
- +1 227 555 0123
Cities in the 227 overlay area
- Frederick
- Rockville
- Gaithersburg
- Hagerstown
- Bethesda
- Silver Spring
- Germantown
- Laurel
- Cumberland
- Joint Base Andrews Naval Air Facility
Is a 227 call a scam?
An area code tells you where a number was first assigned, not where the caller is. Mobile numbers keep their area code when people move, and internet (VoIP) numbers can be picked in any area code — so a 227 number can be calling from anywhere.
Robocallers exploit that with "neighbor spoofing": showing a 227 number to people in Maryland because a local-looking call is more likely to be answered. If a 227 call claims to be your bank, the IRS or a delivery company, hang up and call the official number yourself.
About area code 227
227 entered service on June 14, 2023, as an overlay on 301, which had run short of numbers.
It is part of the 227/240/301 overlay: the codes cover the same area, and a new line there can be given a number in any of them. Two neighbours — or two phones in one household — can have different area codes. That is also why local calls need the full ten digits.
Because 227 overlays the same ground, the cities listed are those of the codes it shares with.
Area codes
More area codes in Maryland
All Maryland area codes · Every North American area code · International country codes
常见问题
Area code 227 questions
Sources: NANPA NPA database (11/04/2026) and Google libphonenumber. Area codes show where a number was assigned, not where its owner is today.
Where is area code 227?
Area code 227 is in Maryland, United States. It covers Frederick, Rockville, Gaithersburg, Hagerstown, Bethesda and Silver Spring.
What time zone is area code 227?
227 is in the Eastern (UTC−5) time zone, and observes daylight saving time.
What area codes overlay 227?
240 and 301 serve the same area as 227. Numbers in all of them are local to one another.
When did area code 227 start?
227 entered service on June 14, 2023, created from 301.
How do I find out who called me from 227?
Enter the full number in the lookup at the top of this page. The free check confirms whether the number is valid and shows its carrier, line type and region; a full report adds owner and public-web records where they are available.
Why am I getting calls from area code 227?
If you live in or near Maryland, they may be genuinely local — or robocalls spoofing a local-looking number. Unknown 227 callers who will not leave a message are best looked up before you call back.