Caller ID for
Area code 667
Area code 667 Baltimore, Maryland
Area code 667 is in Maryland, with numbers assigned in Baltimore, Pikesville, Salisbury and 79 more places. It’s 12:12 AM there now.
- State
- Maryland6 area codes in Maryland
- Time zone
- Eastern12:12 AM there now
- Exchanges
- 45282 places
- Overlay
- 410 and 443Same area, 10-digit dialing
- No sign-up
- We never contact the number
- Spam risk included
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Where area code 667 is
Numbers in 667 are assigned to 82 places in 17 counties: Baltimore city, Baltimore County, Anne Arundel County, Harford County, Wicomico County, Howard County, plus 11 more.
No single place dominates: Baltimore, the largest, has 17% of the exchanges.
- Baltimore77
- Pikesville24
- Salisbury23
- Aberdeen23
- Annapolis17
- Columbia13
- Catonsville13
- Towson11
- Bel Air8
- Glen Burnie8
- Odenton8
- Elkton7
- Prince Frederick6
- Essex6
- Parkville6
- Westminster5
- Cambridge5
- Severn5
- Centreville4
- Oxford4
- Dundalk4
- Elkridge4
- Ellicott City4
- Crofton4
Phone companies in 667
452 blocks of numbers in 667 are held by 44 phone companies. The most belong to Inteliquent (85), T-Mobile (63) and AT&T Mobility (58).
A large share, about 62%, belongs to competitive and internet phone carriers; wireless networks hold 33% and local phone and cable companies 5%.
A block’s holder is the company it was first assigned to; numbers can move to other carriers since.
History and overlays
667 went into service in 2012, added to the area of 443.
410 (since 1991) and 443 (since 1997) share the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.
269 new exchanges were assigned since 2021, the latest in October 2026.
Calling 667
It’s 12:12 AM Eastern time in 667 right now.
From elsewhere in the U.S., dial 1, 667 and the 7-digit number; inside the area, all 10 digits too.
Nearby area codes
Maryland has 6 area codes: 227, 240, 301, 410, 443 and 667.
- 202 · Washington, DC · about 38 mi
- 771 · Washington, DC · about 38 mi
- 302 · Wilmington, DE · about 47 mi
- 703 · Herndon, VA · about 58 mi
- 240 · Frederick, MD · about 60 mi
- 571 · Herndon, VA · about 60 mi
From the North American Numbering Plan Administrator’s area code and exchange records (10/22/2026) and U.S. Census place and county names. Places and companies are where number blocks were assigned, not where anyone lives or which carrier a number uses today.
Map of the 667 area code
Map of the 667 area code around Baltimore, Pikesville and Salisbury, Maryland.
Cities on the map
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Questions about 667
Where is area code 667?
In Maryland, covering Baltimore, Pikesville and Salisbury and other places across 17 counties.
What time zone is 667 in?
Eastern time. It was 12:12 AM there when this page loaded.
Is 667 an overlay?
Yes. 410 and 443 serve the same area, so dial all 10 digits for local calls.
Which phone companies have 667 numbers?
44 companies hold blocks; the most belong to Inteliquent, T-Mobile and AT&T Mobility. About 33% of blocks are wireless.
Is 667 running out of numbers?
Not on record. 269 new exchanges have been assigned since 2021.