Area code 443 covers part of Marylandstate, covering most of Baltimore, Anne Arundel, Harford, Cecil, Carroll counties. It was started on Jan 01, 2000. This region follows US/Eastern + Daylight Savings timezone. Other popular area codes that belong to Maryland state include 240, 301, 410, 667.
Date Changed | Change Details |
Jun 01, 2014 | Area code 410 subscribers are now overlayed with area code 443. Subscriber area code 443-960 was assigned on Apr 23, 2013 and is operational from Jun 01, 2014. |
May 02, 2014 | Area code 410 subscribers are now overlayed with area code 443. Subscriber area code 443-917 was assigned on Apr 08, 2014 and is operational from May 02, 2014. |
May 01, 2014 | Area code 410 subscribers are now overlayed with area code 443. Subscriber area code 443-981 was assigned on Apr 23, 2013 and is operational from May 01, 2014. |
Apr 23, 2014 | Area code 410 subscribers are now overlayed with area code 443. Subscriber area code 443-951 is operational from Apr 23, 2014. |
Apr 15, 2014 | Area code 410 subscribers are now overlayed with area code 443. Subscriber area code 443-906 was assigned on Dec 05, 2012 and is operational from Apr 15, 2014. |
Apr 07, 2014 | Area code 410 subscribers are now overlayed with area code 443. Subscriber area code 443-947 is operational from Apr 07, 2014. |
Area Code | City | County | Population | Network Operator |
443-900-0 | Woodlawn | Baltimore | 805,029 | Cellco Partnership dba Verizon Wireless - MD |
443-901 | Hanover | Baltimore | 805,029 | Cavalier Telephone Mid-Atlantic LLC - MD |
443-902-9 | Hanover | Baltimore | 620,961 | Sprint Spectrum LP |
443-902-0 | Woodlawn | Baltimore | 620,961 | Cellco Partnership dba Verizon Wireless - MD |
443-903-5 | Baltimore | Harford | 244,826 | Omnipoint Communications Cap Operations LLC |
443-903-7 | Columbia | Harford | 244,826 | New Cingular Wireless PCS LLC - DC |
443-903-2 | Pikesville | Harford | 244,826 | Broadvox-CLEC LLC - MD |
443-903-0 | Woodlawn | Harford | 244,826 | Cellco Partnership dba Verizon Wireless - MD |
443-904-9 | Hanover | Baltimore | 620,961 | Sprint Spectrum LP |
443-904-0 | Woodlawn | Baltimore | 620,961 | Cellco Partnership dba Verizon Wireless - MD |
443-905-5 | Baltimore | Anne Arundel | 537,656 | tw telecom of maryland - MD |
443-905-9 | Columbia | Anne Arundel | 537,656 | New Cingular Wireless PCS LLC - DC |
443-905-0 | Hanover | Anne Arundel | 537,656 | Sprint Spectrum LP |
443-906-3 | Baltimore | Anne Arundel | 537,656 | Bandwidth.com CLEC LLC - MD |
443-906-0 | Baltimore | Anne Arundel | 537,656 | Peerless Network of Maryland LLC |
443-906-9 | Hanover | Anne Arundel | 537,656 | Sprint Spectrum LP |
443-906-2 | White Marsh | Anne Arundel | 537,656 | Comcast Phone of Northern Maryland Inc - MD |
443-907-1 | Columbia | Cecil | 101,108 | US LEC of Maryland Inc |
443-907-0 | North East | Cecil | 101,108 | Cellco Partnership dba Verizon Wireless - MD |
443-908-9 | Hanover | Baltimore | 620,961 | Sprint Spectrum LP |
443-908-0 | Woodlawn | Baltimore | 620,961 | Cellco Partnership dba Verizon Wireless - MD |
443-909-7 | Baltimore | Baltimore | 620,961 | Paetec Communications Inc - MD |
443-909-5 | Hanover | Baltimore | 620,961 | Sprint Spectrum LP |
443-909-0 | Woodlawn | Baltimore | 620,961 | Cellco Partnership dba Verizon Wireless - MD |
443-910-9 | Baltimore | Harford | 244,826 | Local Access LLC - MD |
443-910-0 | Columbia | Harford | 244,826 | New Cingular Wireless PCS LLC - DC |
443-911 | 144,913 | Emergency Services | ||
443-912-0 | Baltimore | Baltimore | 805,029 | Core Communications Inc - MD |
443-912-9 | Columbia | Baltimore | 805,029 | New Cingular Wireless PCS LLC - DC |
443-913-0 | Hanover | Baltimore | 620,961 | Sprint Spectrum LP |
443-914-0 | Baltimore | Baltimore | 805,029 | Allegiance Telecom of Maryland Inc |
443-914-8 | Baltimore | Baltimore | 805,029 | Peerless Network of Maryland LLC |
443-914-0 | Baltimore | Baltimore | 805,029 | Teleport Communications America LLC - MD |
443-914-1 | Columbia | Baltimore | 805,029 | US LEC of Maryland Inc |
443-915-0 | Woodlawn | Baltimore | 620,961 | Cellco Partnership dba Verizon Wireless - MD |
443-916-0 | Hanover | Baltimore | 620,961 | Sprint Spectrum LP |
443-917-8 | Baltimore | Howard | 287,085 | Level 3 Communications LLC - MD |
443-917-0 | Baltimore | Howard | 287,085 | Local Access LLC - MD |
443-917-7 | Baltimore | Howard | 287,085 | Qwest Communications Company LLC |
443-917-5 | Baltimore | Howard | 287,085 | XO Maryland LLC |
443-917-0 | Pikesville | Howard | 287,085 | Broadvox-CLEC LLC - MD |
443-917-2 | White Marsh | Howard | 287,085 | Comcast Phone of Northern Maryland Inc - MD |
443-918-7 | Baltimore | Carroll | 167,134 | Bandwidth.com CLEC LLC - MD |
443-918-0 | Baltimore | Carroll | 167,134 | Core Communications Inc - MD |
443-918-6 | Baltimore | Carroll | 167,134 | Level 3 Communications LLC - MD |
443-918-3 | Baltimore | Carroll | 167,134 | Lightwave Communications LLC - MD |
443-918-4 | Baltimore | Carroll | 167,134 | MCI Worldcom Communications Inc - MD |
443-918-1 | Baltimore | Carroll | 167,134 | Paetec Communications Inc - MD |
443-918-0 | Baltimore | Carroll | 167,134 | Teleport Communications America LLC - MD |
443-918-2 | Columbia | Carroll | 167,134 | US LEC of Maryland Inc |
443-918-8 | White Marsh | Carroll | 167,134 | Comcast Phone of Northern Maryland Inc - MD |
443-919 | Hanover | Baltimore | 620,961 | Cavalier Telephone Mid-Atlantic LLC - MD |
443-920-0 | Columbia | Carroll | 167,134 | Teleport Communications America LLC - MD |
443-920-3 | White Marsh | Carroll | 167,134 | Comcast Phone of Northern Maryland Inc - MD |
443-921-0 | Baltimore | Baltimore | 805,029 | Paetec Communications Inc - MD |
443-921-7 | Columbia | Baltimore | 805,029 | New Cingular Wireless PCS LLC - DC |
443-922-0 | Baltimore | Harford | 244,826 | ATX Telecommunications Services Ltd |
443-922-9 | White Marsh | Harford | 244,826 | Comcast Phone of Northern Maryland Inc - MD |
443-923 | Hanover | Baltimore | 620,961 | Cavalier Telephone Mid-Atlantic LLC - MD |
443-924-6 | Baltimore | Anne Arundel | 537,656 | Bandwidth.com CLEC LLC - MD |
443-924-2 | Baltimore | Anne Arundel | 537,656 | Paetec Communications Inc - MD |
443-924-9 | Columbia | Anne Arundel | 537,656 | New Cingular Wireless PCS LLC - DC |
443-924-5 | Hanover | Anne Arundel | 537,656 | Sprint Spectrum LP |
443-924-0 | Woodlawn | Anne Arundel | 537,656 | Cellco Partnership dba Verizon Wireless - MD |
443-925-0 | Baltimore | Baltimore | 620,961 | Omnipoint Communications Cap Operations LLC |
443-925-8 | Hanover | Baltimore | 620,961 | Sprint Spectrum LP |
443-926-0 | Annapolis | Anne Arundel | 537,656 | Broadwing Communications LLC - MD |
443-926-6 | Woodlawn | Anne Arundel | 537,656 | Cellco Partnership dba Verizon Wireless - MD |
443-927-0 | Baltimore | Baltimore | 620,961 | Broadwing Communications LLC - MD |
443-927-5 | Hanover | Baltimore | 620,961 | Sprint Spectrum LP |
443-927-6 | Woodlawn | Baltimore | 620,961 | Cellco Partnership dba Verizon Wireless - MD |
443-928-6 | Baltimore | Baltimore | 620,961 | Omnipoint Communications Cap Operations LLC |
443-928-0 | Woodlawn | Baltimore | 620,961 | Cellco Partnership dba Verizon Wireless - MD |
443-929-0 | Baltimore | Baltimore | 805,029 | Omnipoint Communications Cap Operations LLC |
443-930-5 | Baltimore | Baltimore | 620,961 | YMax Communications Corporation - MD |
443-930-9 | Hanover | Baltimore | 620,961 | Sprint Spectrum LP |
443-930-0 | Woodlawn | Baltimore | 620,961 | Cellco Partnership dba Verizon Wireless - MD |
443-931-4 | Baltimore | Baltimore | 620,961 | CTC Communications Corporation - MD |
443-931-0 | Baltimore | Baltimore | 620,961 | MCI Worldcom Communications Inc - MD |
443-931-9 | Columbia | Baltimore | 620,961 | New Cingular Wireless PCS LLC - DC |
443-931-1 | Woodlawn | Baltimore | 620,961 | Cellco Partnership dba Verizon Wireless - MD |
443-932-0 | Hanover | Baltimore | 620,961 | Sprint Spectrum LP |
443-933-0 | Columbia | Baltimore | 805,029 | Teleport Communications America LLC - MD |
443-934-9 | Baltimore | Baltimore | 620,961 | Omnipoint Communications Cap Operations LLC |
443-934-0 | Woodlawn | Baltimore | 620,961 | Cellco Partnership dba Verizon Wireless - MD |
443-935-0 | Columbia | Baltimore | 805,029 | New Cingular Wireless PCS LLC - DC |
443-936 | Baltimore | Baltimore | 620,961 | Verizon Maryland Inc |
443-937-5 | Baltimore | Carroll | 167,134 | Bandwidth.com CLEC LLC - MD |
443-937-0 | Baltimore | Carroll | 167,134 | Core Communications Inc - MD |
443-937-8 | Baltimore | Carroll | 167,134 | Peerless Network of Maryland LLC |
443-937-0 | Baltimore | Carroll | 167,134 | Teleport Communications America LLC - MD |
443-937-1 | Columbia | Carroll | 167,134 | US LEC of Maryland Inc |
443-937-2 | Pikesville | Carroll | 167,134 | Broadvox-CLEC LLC - MD |
443-937-6 | White Marsh | Carroll | 167,134 | Comcast Phone of Northern Maryland Inc - MD |
443-938-9 | Baltimore | Baltimore | 620,961 | Level 3 Communications LLC - MD |
443-938-8 | Baltimore | Baltimore | 620,961 | Omnipoint Communications Cap Operations LLC |
443-938-0 | Woodlawn | Baltimore | 620,961 | Cellco Partnership dba Verizon Wireless - MD |
443-939-0 | Baltimore | Baltimore | 620,961 | Omnipoint Communications Cap Operations LLC |
443-940 | Hanover | Baltimore | 805,029 | Cavalier Telephone Mid-Atlantic LLC - MD |
443-941-2 | Baltimore | Cecil | 101,108 | IDT America Corporation - MD |
443-941-9 | Baltimore | Cecil | 101,108 | Peerless Network of Maryland LLC |
443-941-0 | Pikesville | Cecil | 101,108 | Broadvox-CLEC LLC - MD |
443-942-0 | Columbia | Anne Arundel | 537,656 | Teleport Communications America LLC - MD |
443-943-3 | Baltimore | Baltimore | 805,029 | MetroPCS Inc |
443-943-0 | Baltimore | Baltimore | 805,029 | Teleport Communications America LLC - MD |
443-944-7 | Salisbury | Wicomico | 98,733 | Cellco Partnership dba Verizon Wireless - MD |
443-945-9 | Baltimore | Cecil | 101,108 | Bandwidth.com CLEC LLC - MD |
443-945-8 | North East | Cecil | 101,108 | Cellco Partnership dba Verizon Wireless - MD |
443-946 | Baltimore | Baltimore | 805,029 | XO Maryland LLC |
443-947-0 | Baltimore | Cecil | 101,108 | CTC Communications Corporation - MD |
443-948-6 | Baltimore | Baltimore | 620,961 | Bandwidth.com CLEC LLC - MD |
443-948-5 | White Marsh | Baltimore | 620,961 | Comcast Phone of Northern Maryland Inc - MD |
443-949-3 | Baltimore | Anne Arundel | 537,656 | MCI Worldcom Communications Inc - MD |
443-949-0 | White Marsh | Anne Arundel | 537,656 | Comcast Phone of Northern Maryland Inc - MD |
443-951-0 | Baltimore | Anne Arundel | 537,656 | Global Crossing Local Services Inc - MD |
443-951-6 | Hanover | Anne Arundel | 537,656 | Sprint Spectrum LP |
443-952-5 | Baltimore | Carroll | 167,134 | MCI Worldcom Communications Inc - MD |
443-952-7 | White Marsh | Carroll | 167,134 | Comcast Phone of Northern Maryland Inc - MD |
443-953-0 | Salisbury | Wicomico | 98,733 | Cellco Partnership dba Verizon Wireless - MD |
443-954-0 | Baltimore | Baltimore | 620,961 | Paetec Communications Inc - MD |
443-955-6 | Baltimore | Baltimore | 620,961 | Level 3 Communications LLC - MD |
443-956 | Columbia | Baltimore | 620,961 | New Cingular Wireless PCS LLC - DC |
443-957-0 | Baltimore | Baltimore | 620,961 | AT&T Local |
443-957-8 | Hanover | Baltimore | 620,961 | Sprint Spectrum LP |
443-958 | 998,960 | Standard Plant Test Code | ||
443-959 | 9,961 | Standard Plant Test Code | ||
443-960-0 | Woodlawn | Anne Arundel | 537,656 | Cellco Partnership dba Verizon Wireless - MD |
443-962-6 | Baltimore | Anne Arundel | 537,656 | Level 3 Communications LLC - MD |
443-963-9 | Baltimore | Baltimore | 620,961 | Bandwidth.com CLEC LLC - MD |
443-963-3 | Pikesville | Baltimore | 620,961 | Broadvox-CLEC LLC - MD |
443-964-9 | Baltimore | Calvert | 88,737 | Bandwidth.com CLEC LLC - MD |
443-964-3 | Baltimore | Calvert | 88,737 | MCI Worldcom Communications Inc - MD |
443-964-8 | White Marsh | Calvert | 88,737 | Comcast Phone of Northern Maryland Inc - MD |
443-965-9 | Baltimore | Baltimore | 620,961 | Level 3 Communications LLC - MD |
443-966-3 | Baltimore | Harford | 244,826 | Bandwidth.com CLEC LLC - MD |
443-967-2 | Baltimore | Cecil | 101,108 | IDT America Corporation - MD |
443-967-0 | North East | Cecil | 101,108 | Verizon Maryland Inc |
443-968-3 | Baltimore | Calvert | 88,737 | CTC Communications Corporation - MD |
443-968-7 | Pikesville | Calvert | 88,737 | Broadvox-CLEC LLC - MD |
443-969-0 | Hanover | Baltimore | 805,029 | Cavalier Telephone Mid-Atlantic LLC - MD |
443-970-0 | Woodlawn | Baltimore | 620,961 | Cellco Partnership dba Verizon Wireless - MD |
443-971-0 | Baltimore | Carroll | 167,134 | Bandwidth.com CLEC LLC - MD |
443-972-0 | Salisbury | Dorchester | 32,618 | US LEC of Maryland Inc |
443-973-6 | Baltimore | Howard | 287,085 | Bandwidth.com CLEC LLC - MD |
443-973-0 | Baltimore | Howard | 287,085 | XO Maryland LLC |
443-974-0 | Baltimore | Carroll | 167,134 | Teleport Communications America LLC - MD |
443-975-0 | Columbia | Calvert | 88,737 | New Cingular Wireless PCS LLC - DC |
443-976 | Baltimore | Anne Arundel | 537,656 | Baltimore-Washington Telephone (BWT) |
443-977-6 | Baltimore | Baltimore | 620,961 | Level 3 Communications LLC - MD |
443-978-0 | Salisbury | Wicomico | 98,733 | Cellco Partnership dba Verizon Wireless - MD |
443-979-0 | Baltimore | Howard | 287,085 | Cellco Partnership dba Verizon Wireless - MD |
443-980-0 | Columbia | Baltimore | 805,029 | New Cingular Wireless PCS LLC - DC |
443-981-2 | Pikesville | Harford | 244,826 | Broadvox-CLEC LLC - MD |
443-981-0 | Woodlawn | Harford | 244,826 | Cellco Partnership dba Verizon Wireless - MD |
443-982-0 | Baltimore | Baltimore | 620,961 | YMax Communications Corporation - MD |
443-983 | Baltimore | Baltimore | 620,961 | Omnipoint Communications Cap Operations LLC |
443-984 | Baltimore | Baltimore | 620,961 | Verizon Maryland Inc |
443-985-0 | Baltimore | Baltimore | 805,029 | Omnipoint Communications Cap Operations LLC |
443-986-9 | Baltimore | Baltimore | 620,961 | Level 3 Communications LLC - MD |
443-987-0 | Baltimore | Harford | 244,826 | AT&T Local |
443-987-8 | Woodlawn | Harford | 244,826 | Cellco Partnership dba Verizon Wireless - MD |
443-988-4 | Easton | Queen Anne's | 47,798 | MCI Worldcom Communications Inc - MD |
443-989-0 | Hanover | Anne Arundel | 537,656 | Cavalier Telephone Mid-Atlantic LLC - MD |
443-990-0 | Baltimore | Baltimore | 620,961 | Bandwidth.com CLEC LLC - MD |
443-990-9 | Hanover | Baltimore | 620,961 | Sprint Spectrum LP |
443-991-7 | Baltimore | Baltimore | 805,029 | Level 3 Communications LLC - MD |
443-991-4 | White Marsh | Baltimore | 805,029 | Comcast Phone of Northern Maryland Inc - MD |
443-992-0 | Baltimore | Baltimore | 620,961 | Level 3 Communications LLC - MD |
443-993-0 | Baltimore | Cecil | 101,108 | Peerless Network of Maryland LLC |
443-993-0 | Pikesville | Cecil | 101,108 | MetroPCS Inc |
443-994 | Columbia | Anne Arundel | 537,656 | New Cingular Wireless PCS LLC - DC |
443-995 | Columbia | Anne Arundel | 537,656 | New Cingular Wireless PCS LLC - DC |
443-996 | Columbia | Baltimore | 805,029 | New Cingular Wireless PCS LLC - DC |
443-997 | Baltimore | Baltimore | 620,961 | Verizon Maryland Inc |
443-998-0 | Parkville | Baltimore | 805,029 | Verizon Maryland Inc |
443-999 | Baltimore | 8,001,001 | Verizon Maryland Inc |
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