Area Codes > 240 > Central Office Codes
Exchange | Rate Center | State | Operating Company |
---|---|---|---|
240-571 | MD | ||
240-573 | WSNG236Z15 | MD | GLOBAL CROSSING LOCAL SERVICES, INC.-MD |
240-575 | FREDERICK | MD | LEVEL 3 COMMUNICATIONS, LLC - MD |
240-577 | LEONARDTN | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240-580 | CUMBERLAND | MD | NEXTEL COMMUNICATIONS, INC. |
240-581 | LAUREL236 | MD | PAETEC COMMUNICATIONS, INC. - DC |
240-582 | WSHNGTNZN4 | MD | VERIZON MARYLAND, INC. |
240-586 | FREDERICK | MD | VERIZON MARYLAND, INC. |
240-593 | LAUREL238 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
240-595 | WSHNGTNZN3 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240-597 | GAITHERSBG | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-599 | WSNGTNZN10 | MD | BROADWING COMMUNICATIONS. LLC - MD |
240-601 | WSHNGTNZN3 | MD | SPRINT SPECTRUM L.P. |
240-602 | WSHNGTNZN3 | MD | SPRINT SPECTRUM L.P. |
240-603 | WSHNGTNZN3 | MD | SPRINT SPECTRUM L.P. |
240-604 | WSHNGTNZN3 | MD | SPRINT SPECTRUM L.P. |
240-605 | WSHNGTNZN3 | MD | SPRINT SPECTRUM L.P. |
240-606 | WSHNGTNZN3 | MD | SPRINT SPECTRUM L.P. |
240-607 | WALDORF | MD | GLOBAL CROSSING LOCAL SERVICES, INC.-MD |
240-611 | MD | ||
240-616 | WSNG236Z13 | MD | MCI WORLDCOM COMMUNICATIONS, INC. - MD |
240-619 | WSHNGTNZN5 | MD | MCI WORLDCOM COMMUNICATIONS, INC. - MD |
240-620 | WSNGTNZN10 | MD | MCI WORLDCOM COMMUNICATIONS, INC. - MD |
240-621 | WSNGTNZN11 | MD | MCI WORLDCOM COMMUNICATIONS, INC. - MD |
240-624 | WSNG236Z13 | MD | VERIZON MARYLAND, INC. |
240-625 | HAGERSTOWN | MD | NEXTEL COMMUNICATIONS, INC. |
240-626 | FREDERICK | MD | SPRINT SPECTRUM L.P. |
240-627 | WSNGTNZN11 | MD | GLOBAL CROSSING LOCAL SERVICES, INC.-MD |
240-629 | FREDERICK | MD | VERIZON MARYLAND, INC. |
240-631 | GAITHERSBG | MD | VERIZON MARYLAND, INC. |
240-632 | GAITHERSBG | MD | VERIZON MARYLAND, INC. |
240-638 | WSHNGTNZN3 | MD | BROADWING COMMUNICATIONS. LLC - MD |
240-641 | WSNGTNZN10 | MD | TIDALWAVE TELEPHONE INC. |
240-642 | WSNGTNZN10 | MD | TIDALWAVE TELEPHONE INC. |
240-643 | WSHNGTNZN3 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
240-644 | WSHNGTNZN2 | MD | XO MARYLAND, LLC |
240-645 | WSHNGTNZN3 | MD | XO MARYLAND, LLC |
240-646 | LAUREL236 | MD | CAVALIER EAST LLC - MD |
240-652 | MECHANCSVL | MD | XO MARYLAND, LLC |
240-654 | GAITHERSBG | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-662 | WSHNGTNZN3 | MD | VERIZON MARYLAND, INC. |
240-667 | WSHNGTNZN4 | MD | GLOBAL CROSSING LOCAL SERVICES, INC.-MD |
240-668 | DAMASCS236 | MD | STARPOWER COMMUNICATIONS, LLC - MD |
240-669 | WSNGTNZN11 | MD | SBC LONG DISTANCE, LLC DBA AT&T LONG DISTANCE - MD |
240-671 | WSHNGTNZN2 | MD | SBC LONG DISTANCE, LLC DBA AT&T LONG DISTANCE - MD |
240-672 | WSNGTNZN10 | MD | SBC LONG DISTANCE, LLC DBA AT&T LONG DISTANCE - MD |
240-674 | FREDERICK | MD | NEXTEL COMMUNICATIONS, INC. |
240-675 | MYERSVILLE | MD | DOBSON CELLULAR SYSTEMS, INC. |
240-676 | WSHNGTNZN3 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240-678 | WSHNGTNZN3 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240-681 | BRANDYWINE | MD | ATX TELECOMMUNICATIONS SERVICES, LTD |
240-682 | WALDORF | MD | STARPOWER COMMUNICATIONS, LLC - MD |
240-683 | GAITHERSBG | MD | VERIZON MARYLAND, INC. |
240-684 | WSNG236Z13 | MD | VERIZON MARYLAND, INC. |
240-685 | BRANDYWINE | MD | GLOBAL CROSSING LOCAL SERVICES, INC.-MD |
240-686 | GAITHERSBG | MD | VERIZON MARYLAND, INC. |
240-687 | WSHNGTNZN3 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240-688 | WSHNGTNZN3 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240-691 | WSHNGTNZN5 | MD | GLOBAL CROSSING LOCAL SERVICES, INC.-MD |
240-694 | WSHNGTNZN2 | MD | VERIZON MARYLAND, INC. |
240-695 | WSHNGTNZN5 | MD | VERIZON MARYLAND, INC. |
240-696 | WSHNGTNZN4 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD |
240-699 | BUCKEYSTN | MD | VERIZON MARYLAND, INC. |
240-700 | MD | ||
240-703 | MD | ||
240-711 | MD | ||
240-715 | WSNGTNZN10 | MD | GLOBAL CROSSING LOCAL SERVICES, INC.-MD |
240-718 | LXTNPKGRML | MD | XO MARYLAND, LLC |
240-720 | GAITHERSBG | MD | GLOBAL CROSSING LOCAL SERVICES, INC.-MD |
240-722 | ASHTON236 | MD | GLOBAL CROSSING LOCAL SERVICES, INC.-MD |
240-723 | WSHNGTNZN3 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240-724 | WSHNGTNZN6 | MD | CAVALIER EAST LLC - MD |
240-725 | LXTNPKGRML | MD | VERIZON MARYLAND, INC. |
240-727 | CUMBERLAND | MD | DOBSON CELLULAR SYSTEMS, INC. |
240-731 | WSNGTNZN10 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-737 | WSHNGTNZN4 | MD | CAVALIER EAST LLC - MD |
240-743 | WSHNGTNZN2 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-744 | WSHNGTNZN2 | MD | BROADWING COMMUNICATIONS. LLC - MD |
240-745 | DAMASCS236 | MD | XO MARYLAND, LLC |
240-747 | WSNGTNZN11 | MD | CAVALIER EAST LLC - MD |
240-750 | GAITHERSBG | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-751 | GAITHERSBG | MD | TELCOVE OPERATIONS, INC. - MD |
240-752 | WSHNGTNZN2 | MD | TELCOVE OPERATIONS, INC. - MD |
240-753 | WSNGTNZN10 | MD | TELCOVE OPERATIONS, INC. - MD |
240-755 | LAUREL238 | MD | COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD |
240-757 | WSNG236Z13 | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-764 | WSHNGTNZN4 | MD | XO MARYLAND, LLC |
240-765 | WSHNGTNZN5 | MD | XO MARYLAND, LLC |
240-766 | WSHNGTNZN6 | MD | XO MARYLAND, LLC |
240-767 | WSHNGTNZN5 | MD | CAVALIER EAST LLC - MD |
240-770 | WSHNGTNZN4 | MD | SBC LONG DISTANCE, LLC DBA AT&T LONG DISTANCE - MD |
240-773 | WSNGTNZN10 | MD | VERIZON MARYLAND, INC. |
240-776 | LA PLATA | MD | BROADWING COMMUNICATIONS. LLC - MD |
240-777 | WSNGTNZN10 | MD | VERIZON MARYLAND, INC. |
240-778 | WSNGTNZN10 | MD | XO MARYLAND, LLC |
240-779 | ASHTON236 | MD | CAVALIER EAST LLC - MD |
240-780 | GAITHERSBG | MD | BROADWING COMMUNICATIONS. LLC - MD |
240-782 | DAMASCS236 | MD | GLOBAL CROSSING LOCAL SERVICES, INC.-MD |
240-783 | WSHNGTNZN2 | MD | MTE, INC. DBA MTE PAGING NETWORK |
240-784 | MYERSVILLE | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |