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Updated Jan 02, 2010Area Code 443
  1. "E" is Eastern Time Zone, "C" is Central Time Zone, "M" is Mountain Time Zone, and "P" is Pacific Time Zone. Occasionally, an area code will fall in more than one time zone. In this case, the abbreviation is a combination of the previous abbreviations. Some area codes are shown with time zones referencing Universal Coordinated Time (UTC).
  2. Additional technical status can be retrived from the North American Numbering Plan Administration on the 443 area code specific link here.
Area Code443 (area code map)
LocationMaryland
Dates and historical informationArea code 443 went live into service on June 01, 1997.  It was formed as a subdivision of the 410 area code.  It has had the 667 area code(s) overlaid on it.
Growth StatusThis area code went live on June 01, 1997 as an "overlay" on the 667 area code.  This means the 443 area code was created in part to provide more telephone numbers for people in the 667 area code area. In other words, 443 is a subdivision of the 667 area code. Planning is underway and notices have been distributed regarding the area code subdivision. 
Technical Status 2Area code 443 is currently live and in service.
Time Zone(s) 1E
LATA numbers served238, 242
Number of rate centers served79
List of rate centersWOODLAWN, WEST RIVER, PIKESVILLE, CAMBRIDGE, PERRYVILLE, ELKTON, HAVREGRACE, ABERDEEN, SPARKSGLNC, ANNAPOLIS, CHESTERTN, DUNDALK, WORTHINGTN, PARKVILLE, BALTIMORE, PT DEPOSIT, CHASE, SEVERNA PK, ODENTON, ESSEX, WILLARDS, VIENNA, SNOW HILL, SALISBURY, CARDIFF, NORTHBEACH, PARKTON, EASTON, WESTMINSTR, SPARROWSPT, FALLSTON, UNION BDG, STEVENSVL, NORTH EAST, COLUMBIA, CENTREVL, FORK, GLENWOOD, DARLINGTON, TOWSON, GLENBURNIE, RANDALLSTN, REISTERSTN, SEVERN, SYKESVILLE, COCKEYSVL, ELLICOTTCY, HAMPSTEAD, CROFTON, PRINCEFRCK, ARBUTUS, ARGRGBSNIS, BEL AIR, BRYNPKLNCM, CATONSVL, SHARPTOWN, TANEYTOWN, SHERWD FOR, SOLOMONS, MILLERSVL, SILVER RUN, DELMAR, EDGEWOOD, OCEAN CITY, POCOMOKE, CHURCHVL, PRINCEANNE, FEDERALSBG, TRAPPE, ELKRIDGE, QUEENSTOWN, DENTON, JARRETTSVL, BERLIN, CHESAPKECY, NEWWINDSOR, NANTICOKE, CRISFIELD, BISHOPVL
Number of major cities served137
Names of major cities served (ZIP code)Baltimore (21207), Gwynn Oak (21207), Woodlawn (21207), Mayo (21106), Baltimore (21208), Pikesville (21208), Cambridge (21613), Port Deposit (21904), Bainbridge (21904), Elkton (21921), Havre De Grace (21078), Hvre De Grace (21078), Aberdeen (21001), Baltimore (21202), East Case (21202), Monkton (21111), Hereford (21111), Owings Mills (21117), Garrison (21117), Annapolis (21401), Cape Saint Claire (21401), Cpe St Claire (21401), Chestertown (21620), Baltimore (21222), Dundalk (21222), Dundalk Sparrows Point (21222), Glyndon (21136), Reisterstown (21136), Baltimore (21234), Parkville (21234), Bel Air (21014), Chase (21027), Severna Park (21146), Odenton (21113), Baltimore (21221), Essex (21221), Willards (21874), Vienna (21869), Elliott (21869), Salem (21869), Snow Hill (21863), Salisbury (21804), (21024), North Beach (20714), Holland Point (20714), Rose Haven (20714), N Beach (20714), Parkton (21120), Bentley Spgs (21120), Bentley Springs (21120), Easton (21601), Westminster (21157), Carrollton (21157), Baltimore (21219), Sparrows Point (21219), Edgemere (21219), Sparrows Pt (21219), Dundalk Sparrows Point (21219), Union Bridge (21791), Linwood (21791), Stevensville (21666), North East (21901), Northeast (21901), Columbia (21045), Delmar (21875), Centreville (21617), Fork (21051), Glenwood (21738), Darlington (21034), Baltimore (21204), Towson (21204), Eudowood (21204), Loch Raven (21204), Ruxton (21204), Glen Burnie (21061), Glenburnie (21061), Randallstown (21133), Mcdonogh Run (21133), Foxridge (21133), Columbia (21044), Sykesville (21784), Eldersburg (21784), Gaither (21784), Cockeysville (21030), Hunt Valley (21030), Cockysvil (21030), Baltimore (21227), Halethorpe (21227), Arbutus (21227), Lansdowne (21227), Columbia (21046), Baltimore (21231), Patterson (21231), Ellicott City (21042), Ellicott (21042), Hampstead (21074), Greenmount (21074), Crofton (21114), Galesville (20765), Prince Frederick (20678), Dares Beach (20678), Prnc Frederck (20678), Pr Frederick (20678), Baltimore (21229), Carroll (21229), Millersville (21122), Pasadena (21122), Lake Shore (21122), Riviera Beach (21122), Millersville (21108), Baltimore (21225), Brooklyn (21225), Brooklyn Park (21225), Baltimore (21228), Catonsville (21228), Sharptown (21861), Laurel (20707), Taneytown (21787), Solomons (20688), Westminster (21158), Edgewood (21040), Ocean City (21842), North Ocean City (21842), West Ocean City (21842), Pocomoke City (21851), Pocomoke (21851), Churchville (21028), Princess Anne (21853), Oriole (21853), Federalsburg (21632), Trappe (21673), Linthicum Heights (21090), Linthicum (21090), Linthicum Hts (21090), Baltimore (21212), Govans (21212), Queenstown (21658), Denton (21629), Street (21154), Jarrettsville (21084), Berlin (21811), Ocean Pines (21811), Ocean Pnes (21811), Clarksville (21029), Baltimore (21217), Druid (21217), Chesapeake City (21915), Chesapeake Cy (21915), New Windsor (21776), Nanticoke (21840), White Marsh (21162), Crisfield (21817), Bishopville (21813), Bishop (21813), Baltimore (21206), Raspeburg (21206), Baltimore (21214), Hamilton (21214), Baltimore (21218), Waverly (21218)
Number of exchanges served688
List of exchanges served443-200-xxxx, 443-203-xxxx, 443-204-xxxx, 443-205-xxxx, 443-206-xxxx, 443-207-xxxx, 443-209-xxxx, 443-210-xxxx, 443-212-xxxx, 443-213-xxxx, 443-214-xxxx, 443-215-xxxx, 443-216-xxxx, 443-217-xxxx, 443-218-xxxx, 443-219-xxxx, 443-220-xxxx, 443-221-xxxx, 443-222-xxxx, 443-223-xxxx, 443-224-xxxx, 443-225-xxxx, 443-226-xxxx, 443-227-xxxx, 443-228-xxxx, 443-229-xxxx, 443-230-xxxx, 443-231-xxxx, 443-232-xxxx, 443-233-xxxx, 443-234-xxxx, 443-235-xxxx, 443-236-xxxx, 443-237-xxxx, 443-238-xxxx, 443-239-xxxx, 443-241-xxxx, 443-242-xxxx, 443-243-xxxx, 443-244-xxxx, 443-245-xxxx, 443-246-xxxx, 443-247-xxxx, 443-248-xxxx, 443-249-xxxx, 443-250-xxxx, 443-252-xxxx, 443-253-xxxx, 443-254-xxxx, 443-255-xxxx, 443-256-xxxx, 443-257-xxxx, 443-258-xxxx, 443-259-xxxx, 443-260-xxxx, 443-261-xxxx, 443-262-xxxx, 443-263-xxxx, 443-264-xxxx, 443-265-xxxx, 443-266-xxxx, 443-267-xxxx, 443-268-xxxx, 443-269-xxxx, 443-270-xxxx, 443-271-xxxx, 443-272-xxxx, 443-273-xxxx, 443-274-xxxx, 443-275-xxxx, 443-276-xxxx, 443-277-xxxx, 443-278-xxxx, 443-279-xxxx, 443-280-xxxx, 443-281-xxxx, 443-282-xxxx, 443-283-xxxx, 443-285-xxxx, 443-286-xxxx, 443-287-xxxx, 443-288-xxxx, 443-290-xxxx, 443-291-xxxx, 443-292-xxxx, 443-293-xxxx, 443-294-xxxx, 443-295-xxxx, 443-297-xxxx, 443-298-xxxx, 443-299-xxxx, 443-300-xxxx, 443-302-xxxx, 443-303-xxxx, 443-304-xxxx, 443-305-xxxx, 443-306-xxxx, 443-307-xxxx, 443-308-xxxx, 443-309-xxxx, 443-310-xxxx, 443-312-xxxx, 443-313-xxxx, 443-315-xxxx, 443-316-xxxx, 443-317-xxxx, 443-318-xxxx, 443-319-xxxx, 443-320-xxxx, 443-321-xxxx, 443-322-xxxx, 443-323-xxxx, 443-324-xxxx, 443-325-xxxx, 443-326-xxxx, 443-327-xxxx, 443-328-xxxx, 443-330-xxxx, 443-331-xxxx, 443-332-xxxx, 443-334-xxxx, 443-335-xxxx, 443-336-xxxx, 443-337-xxxx, 443-338-xxxx, 443-339-xxxx, 443-340-xxxx, 443-341-xxxx, 443-342-xxxx, 443-343-xxxx, 443-344-xxxx, 443-345-xxxx, 443-346-xxxx, 443-347-xxxx, 443-348-xxxx, 443-349-xxxx, 443-350-xxxx, 443-351-xxxx, 443-352-xxxx, 443-353-xxxx, 443-354-xxxx, 443-355-xxxx, 443-356-xxxx, 443-357-xxxx, 443-359-xxxx, 443-360-xxxx, 443-361-xxxx, 443-362-xxxx, 443-363-xxxx, 443-364-xxxx, 443-365-xxxx, 443-366-xxxx, 443-367-xxxx, 443-368-xxxx, 443-369-xxxx, 443-370-xxxx, 443-371-xxxx, 443-372-xxxx, 443-373-xxxx, 443-374-xxxx, 443-375-xxxx, 443-376-xxxx, 443-378-xxxx, 443-379-xxxx, 443-380-xxxx, 443-381-xxxx, 443-382-xxxx, 443-383-xxxx, 443-384-xxxx, 443-385-xxxx, 443-386-xxxx, 443-387-xxxx, 443-388-xxxx, 443-389-xxxx, 443-390-xxxx, 443-391-xxxx, 443-392-xxxx, 443-393-xxxx, 443-394-xxxx, 443-395-xxxx, 443-396-xxxx, 443-397-xxxx, 443-398-xxxx, 443-399-xxxx, 443-400-xxxx, 443-402-xxxx, 443-403-xxxx, 443-404-xxxx, 443-405-xxxx, 443-406-xxxx, 443-407-xxxx, 443-408-xxxx, 443-409-xxxx, 443-412-xxxx, 443-413-xxxx, 443-414-xxxx, 443-415-xxxx, 443-416-xxxx, 443-417-xxxx, 443-418-xxxx, 443-419-xxxx, 443-420-xxxx, 443-421-xxxx, 443-422-xxxx, 443-423-xxxx, 443-424-xxxx, 443-425-xxxx, 443-426-xxxx, 443-427-xxxx, 443-428-xxxx, 443-429-xxxx, 443-430-xxxx, 443-431-xxxx, 443-432-xxxx, 443-433-xxxx, 443-434-xxxx, 443-435-xxxx, 443-436-xxxx, 443-437-xxxx, 443-438-xxxx, 443-439-xxxx, 443-440-xxxx, 443-441-xxxx, 443-442-xxxx, 443-444-xxxx, 443-445-xxxx, 443-446-xxxx, 443-448-xxxx, 443-449-xxxx, 443-450-xxxx, 443-451-xxxx, 443-452-xxxx, 443-453-xxxx, 443-454-xxxx, 443-455-xxxx, 443-456-xxxx, 443-457-xxxx, 443-458-xxxx, 443-459-xxxx, 443-460-xxxx, 443-461-xxxx, 443-462-xxxx, 443-463-xxxx, 443-465-xxxx, 443-466-xxxx, 443-468-xxxx, 443-470-xxxx, 443-471-xxxx, 443-472-xxxx, 443-473-xxxx, 443-474-xxxx, 443-476-xxxx, 443-477-xxxx, 443-478-xxxx, 443-480-xxxx, 443-481-xxxx, 443-482-xxxx, 443-483-xxxx, 443-484-xxxx, 443-485-xxxx, 443-486-xxxx, 443-487-xxxx, 443-489-xxxx, 443-490-xxxx, 443-491-xxxx, 443-492-xxxx, 443-493-xxxx, 443-494-xxxx, 443-495-xxxx, 443-496-xxxx, 443-497-xxxx, 443-498-xxxx, 443-499-xxxx, 443-501-xxxx, 443-502-xxxx, 443-503-xxxx, 443-504-xxxx, 443-505-xxxx, 443-506-xxxx, 443-507-xxxx, 443-508-xxxx, 443-509-xxxx, 443-510-xxxx, 443-512-xxxx, 443-513-xxxx, 443-514-xxxx, 443-515-xxxx, 443-516-xxxx, 443-517-xxxx, 443-518-xxxx, 443-519-xxxx, 443-520-xxxx, 443-521-xxxx, 443-522-xxxx, 443-523-xxxx, 443-524-xxxx, 443-526-xxxx, 443-527-xxxx, 443-528-xxxx, 443-529-xxxx, 443-530-xxxx, 443-532-xxxx, 443-533-xxxx, 443-534-xxxx, 443-535-xxxx, 443-536-xxxx, 443-537-xxxx, 443-538-xxxx, 443-539-xxxx, 443-540-xxxx, 443-541-xxxx, 443-542-xxxx, 443-543-xxxx, 443-544-xxxx, 443-545-xxxx, 443-546-xxxx, 443-547-xxxx, 443-548-xxxx, 443-549-xxxx, 443-550-xxxx, 443-551-xxxx, 443-552-xxxx, 443-553-xxxx, 443-554-xxxx, 443-555-xxxx, 443-556-xxxx, 443-557-xxxx, 443-558-xxxx, 443-559-xxxx, 443-561-xxxx, 443-562-xxxx, 443-563-xxxx, 443-564-xxxx, 443-565-xxxx, 443-566-xxxx, 443-567-xxxx, 443-568-xxxx, 443-569-xxxx, 443-570-xxxx, 443-572-xxxx, 443-573-xxxx, 443-574-xxxx, 443-575-xxxx, 443-576-xxxx, 443-577-xxxx, 443-578-xxxx, 443-579-xxxx, 443-581-xxxx, 443-582-xxxx, 443-583-xxxx, 443-584-xxxx, 443-585-xxxx, 443-586-xxxx, 443-587-xxxx, 443-588-xxxx, 443-589-xxxx, 443-590-xxxx, 443-591-xxxx, 443-592-xxxx, 443-593-xxxx, 443-594-xxxx, 443-595-xxxx, 443-596-xxxx, 443-597-xxxx, 443-598-xxxx, 443-599-xxxx, 443-600-xxxx, 443-601-xxxx, 443-602-xxxx, 443-603-xxxx, 443-604-xxxx, 443-605-xxxx, 443-606-xxxx, 443-607-xxxx, 443-609-xxxx, 443-610-xxxx, 443-612-xxxx, 443-614-xxxx, 443-615-xxxx, 443-616-xxxx, 443-617-xxxx, 443-618-xxxx, 443-621-xxxx, 443-622-xxxx, 443-623-xxxx, 443-624-xxxx, 443-625-xxxx, 443-626-xxxx, 443-627-xxxx, 443-628-xxxx, 443-629-xxxx, 443-630-xxxx, 443-631-xxxx, 443-632-xxxx, 443-634-xxxx, 443-636-xxxx, 443-637-xxxx, 443-638-xxxx, 443-639-xxxx, 443-640-xxxx, 443-641-xxxx, 443-642-xxxx, 443-643-xxxx, 443-644-xxxx, 443-645-xxxx, 443-646-xxxx, 443-647-xxxx, 443-648-xxxx, 443-649-xxxx, 443-650-xxxx, 443-652-xxxx, 443-653-xxxx, 443-655-xxxx, 443-656-xxxx, 443-657-xxxx, 443-658-xxxx, 443-659-xxxx, 443-660-xxxx, 443-662-xxxx, 443-663-xxxx, 443-664-xxxx, 443-665-xxxx, 443-668-xxxx, 443-669-xxxx, 443-670-xxxx, 443-671-xxxx, 443-672-xxxx, 443-673-xxxx, 443-674-xxxx, 443-675-xxxx, 443-676-xxxx, 443-677-xxxx, 443-678-xxxx, 443-679-xxxx, 443-681-xxxx, 443-682-xxxx, 443-683-xxxx, 443-684-xxxx, 443-685-xxxx, 443-686-xxxx, 443-687-xxxx, 443-688-xxxx, 443-689-xxxx, 443-690-xxxx, 443-691-xxxx, 443-692-xxxx, 443-693-xxxx, 443-694-xxxx, 443-695-xxxx, 443-696-xxxx, 443-697-xxxx, 443-698-xxxx, 443-701-xxxx, 443-702-xxxx, 443-703-xxxx, 443-704-xxxx, 443-705-xxxx, 443-706-xxxx, 443-707-xxxx, 443-708-xxxx, 443-709-xxxx, 443-710-xxxx, 443-712-xxxx, 443-714-xxxx, 443-715-xxxx, 443-716-xxxx, 443-717-xxxx, 443-718-xxxx, 443-719-xxxx, 443-720-xxxx, 443-721-xxxx, 443-722-xxxx, 443-723-xxxx, 443-724-xxxx, 443-725-xxxx, 443-726-xxxx, 443-727-xxxx, 443-728-xxxx, 443-729-xxxx, 443-730-xxxx, 443-731-xxxx, 443-732-xxxx, 443-734-xxxx, 443-735-xxxx, 443-736-xxxx, 443-738-xxxx, 443-739-xxxx, 443-740-xxxx, 443-742-xxxx, 443-743-xxxx, 443-744-xxxx, 443-745-xxxx, 443-746-xxxx, 443-747-xxxx, 443-748-xxxx, 443-749-xxxx, 443-751-xxxx, 443-752-xxxx, 443-756-xxxx, 443-757-xxxx, 443-758-xxxx, 443-759-xxxx, 443-760-xxxx, 443-761-xxxx, 443-762-xxxx, 443-763-xxxx, 443-764-xxxx, 443-765-xxxx, 443-766-xxxx, 443-767-xxxx, 443-768-xxxx, 443-769-xxxx, 443-770-xxxx, 443-772-xxxx, 443-773-xxxx, 443-774-xxxx, 443-775-xxxx, 443-776-xxxx, 443-777-xxxx, 443-779-xxxx, 443-780-xxxx, 443-781-xxxx, 443-782-xxxx, 443-783-xxxx, 443-784-xxxx, 443-785-xxxx, 443-786-xxxx, 443-787-xxxx, 443-788-xxxx, 443-789-xxxx, 443-790-xxxx, 443-791-xxxx, 443-792-xxxx, 443-793-xxxx, 443-794-xxxx, 443-795-xxxx, 443-796-xxxx, 443-797-xxxx, 443-798-xxxx, 443-799-xxxx, 443-801-xxxx, 443-802-xxxx, 443-803-xxxx, 443-804-xxxx, 443-805-xxxx, 443-806-xxxx, 443-807-xxxx, 443-808-xxxx, 443-809-xxxx, 443-810-xxxx, 443-812-xxxx, 443-813-xxxx, 443-815-xxxx, 443-816-xxxx, 443-817-xxxx, 443-818-xxxx, 443-819-xxxx, 443-820-xxxx, 443-822-xxxx, 443-823-xxxx, 443-824-xxxx, 443-825-xxxx, 443-827-xxxx, 443-828-xxxx, 443-829-xxxx, 443-830-xxxx, 443-831-xxxx, 443-832-xxxx, 443-833-xxxx, 443-834-xxxx, 443-835-xxxx, 443-836-xxxx, 443-837-xxxx, 443-838-xxxx, 443-839-xxxx, 443-840-xxxx, 443-841-xxxx, 443-843-xxxx, 443-844-xxxx, 443-845-xxxx, 443-846-xxxx, 443-847-xxxx, 443-848-xxxx, 443-849-xxxx, 443-850-xxxx, 443-851-xxxx, 443-852-xxxx, 443-854-xxxx, 443-855-xxxx, 443-856-xxxx, 443-857-xxxx, 443-858-xxxx, 443-859-xxxx, 443-860-xxxx, 443-861-xxxx, 443-864-xxxx, 443-865-xxxx, 443-866-xxxx, 443-867-xxxx, 443-868-xxxx, 443-869-xxxx, 443-870-xxxx, 443-871-xxxx, 443-872-xxxx, 443-874-xxxx, 443-875-xxxx, 443-876-xxxx, 443-877-xxxx, 443-878-xxxx, 443-879-xxxx, 443-880-xxxx, 443-881-xxxx, 443-883-xxxx, 443-884-xxxx, 443-885-xxxx, 443-886-xxxx, 443-889-xxxx, 443-891-xxxx, 443-893-xxxx, 443-895-xxxx, 443-896-xxxx, 443-898-xxxx, 443-901-xxxx, 443-904-xxxx, 443-907-xxxx, 443-909-xxxx, 443-910-xxxx, 443-912-xxxx, 443-914-xxxx, 443-918-xxxx, 443-919-xxxx, 443-920-xxxx, 443-921-xxxx, 443-922-xxxx, 443-923-xxxx, 443-924-xxxx, 443-925-xxxx, 443-926-xxxx, 443-927-xxxx, 443-928-xxxx, 443-929-xxxx, 443-933-xxxx, 443-934-xxxx, 443-935-xxxx, 443-936-xxxx, 443-937-xxxx, 443-938-xxxx, 443-939-xxxx, 443-940-xxxx, 443-942-xxxx, 443-943-xxxx, 443-944-xxxx, 443-945-xxxx, 443-946-xxxx, 443-947-xxxx, 443-949-xxxx, 443-951-xxxx, 443-954-xxxx, 443-955-xxxx, 443-956-xxxx, 443-957-xxxx, 443-962-xxxx, 443-964-xxxx, 443-965-xxxx, 443-966-xxxx, 443-967-xxxx, 443-968-xxxx, 443-969-xxxx, 443-973-xxxx, 443-974-xxxx, 443-975-xxxx, 443-977-xxxx, 443-980-xxxx, 443-982-xxxx, 443-983-xxxx, 443-984-xxxx, 443-985-xxxx, 443-986-xxxx, 443-987-xxxx, 443-988-xxxx, 443-989-xxxx, 443-992-xxxx, 443-994-xxxx, 443-995-xxxx, 443-996-xxxx, 443-997-xxxx, 443-998-xxxx, 443-999-xxxx
Number of telephone companies38 telephone companies servicing the 443 area code
List of telephone companiesALLEGIANCE TELECOM, INC. - MD, VERIZON MARYLAND, INC., LEVEL 3 COMMUNICATIONS, LLC - MD, XO MARYLAND, LLC, NEW CINGULAR WIRELESS PCS, LLC - DC, NEXTEL COMMUNICATIONS, INC., CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD, OMNIPOINT COMMUNICATIONS ENTERPRISES, L.P., CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD, MCI WORLDCOM COMMUNICATIONS, INC. - MD, TIDALWAVE TELEPHONE INC., US LEC OF MARYLAND, INC., PAETEC COMMUNICATIONS, INC. - MD, CORE COMMUNICATIONS, INC. - MD, CAVALIER TELEPHONE MID-ATLANTIC. LLC - MD, GLOBAL CROSSING LOCAL SERVICES, INC.-MD, OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC, GLOBAL NAPS SOUTH, INC. - MD, SPRINT SPECTRUM L.P., AT&T LOCAL, CTC COMMUNICATIONS - MD, TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD, COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD, VDL, INC. DBA GLOBAL TELECOM BROKERS - MD, YMAX COMMUNICATIONS CORP. - MD, TW TELECOM OF MARYLAND LLC - MD, BROADWING COMMUNICATIONS. LLC - MD, LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC., MCIMETRO ACCESS TRANSMISSION SERVICES LLC, NATIONSLINE, INC. - MD, SBC LONG DISTANCE, LLC DBA AT&T LONG DISTANCE - MD, BROADVIEW NETWORKS, INC. - MD, COMCAST BUSINESS COMMUNICATIONS, INC. - MD, TELCOVE OPERATIONS, INC. - MD, GLOBAL NAPS, INC. - NY, LIGHTWAVE COMMUNICATIONS, LLC - MD, BROADSTREET COMMUNICATIONS, INC. - MD, ATX TELECOMMUNICATIONS SERVICES, LTD

443 Area Code Map

 
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