Columbia, MD Area Codes
Columbia, Maryland (population 105,871) uses area codes 443, 410 and 667.
Carriers with Columbia numbers
64 prefixes are assigned to the Columbia exchange: 20% mobile, 30% VoIP and cable, 50% landline.
| Carrier | Prefixes |
|---|---|
| Verizon | 21 |
| Paetec Itel | 7 |
| Verizon Wireless | 6 |
| Lumen (Level 3) | 5 |
| AT&T Mobility | 5 |
| Verizon Business (MCImetro) | 4 |
| AT&T (Teleport) | 3 |
| Onvoy (Sinch) | 3 |
Area codes used in Columbia
| Area code | Prefixes serving Columbia | Main carriers in this code |
|---|---|---|
| 443 | 31 | Paetec Itel, Verizon Wireless, T-Mobile |
| 410 | 20 | Verizon, Verizon Wireless, AT&T Mobility |
| 667 | 13 | Onvoy (Sinch), AT&T Mobility, T-Mobile |
Columbia phone number prefixes
Numbers starting with these first six digits were originally assigned to the Columbia exchange.
443-259Verizon443-276Verizon Business (MCImetro)443-283Paetec Itel443-285Verizon443-319Paetec Itel443-367Verizon443-393Lumen (Level 3)443-430Verizon Business (MCImetro)443-472Lumen (Level 3)443-518Verizon443-535Verizon443-537Verizon Wireless443-538T-Mobile443-539Paetec Itel443-542Comcast (Xfinity)443-545Lumen (Level 3)443-546Verizon443-583Paetec Itel443-656Paetec Itel443-718Paetec Itel443-741Verizon Business (MCImetro)443-745Verizon Wireless443-766Paetec Itel443-774AT&T Mobility443-812Verizon Wireless443-832Lumen (Level 3)443-864Metropcs443-878Verizon Wireless443-896AT&T (Teleport)443-917Onvoy (Sinch)443-979Verizon Wireless410-290Verizon410-309Verizon410-312Verizon410-381Verizon410-423AT&T (Teleport)410-447Spok410-531Verizon410-707Verizon Wireless410-715Verizon410-730Verizon410-740Verizon410-772Verizon410-794Lumen (Level 3)410-872Verizon410-884Verizon410-910Verizon Business (MCImetro)410-953Verizon410-964Verizon410-992Verizon410-997Verizon667-200Onvoy (Sinch)667-240Barr Tell USA667-257Vonage667-261AT&T Mobility667-300Core Communications667-359Bandwidth667-421Telnyx667-447T-Mobile667-502AT&T Mobility667-550AT&T Mobility667-554AT&T Mobility667-678Onvoy (Sinch)667-786AT&T (Teleport)
Nearby cities in area code 443
- Baltimore
- Ellicott City
- Glen Burnie
- Dundalk
- Severn
- Bel Air South
- Towson
- Odenton
- Catonsville
- Essex
- Annapolis
- Severna Park
Questions
- What is the area code for Columbia, MD?
- Columbia uses 3 area codes: 443, 410 and 667. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
- What time zone is Columbia in?
- Columbia is in the Eastern time zone.