NRNumberResearch Membership · Data 09/17/2026

← Area code 443

VERIZON MARYLAND, INC.

56 prefixes in 443 · initial assignments from the NANPA CO code file, 09/17/2026

Prefixes held by VERIZON MARYLAND, INC. in area code 443
NPA-NXXRate centerOCNAssignedPooled
443-203 WEST RIVER 9212 — Yes
443-213 PIKESVILLE 9212 — Yes
443-220 BALTIMORE 9212 — Yes
443-249 STEVENSVL 9212 — Yes
443-259 COLUMBIA 9212 — Yes
443-260 SALISBURY 9212 — Yes
443-262 CENTREVL 9212 — Yes
443-263 BALTIMORE 9212 — —
443-274 SEVERN 9212 — Yes
443-285 COLUMBIA 9212 — Yes
443-287 BALTIMORE 9212 — —
443-353 COCKEYSVL 9212 2004-03-19 Yes
443-357 PIKESVILLE 9212 — Yes
443-367 COLUMBIA 9212 — Yes
443-394 PIKESVILLE 9212 — —
443-395 ABERDEEN 9212 2009-08-13 Yes
443-436 WOODLAWN 9212 — Yes
443-444 BALTIMORE 9212 — Yes
443-445 ELKRIDGE 9212 — Yes
443-455 BALTIMORE 9212 2006-03-09 Yes
443-476 ANNAPOLIS 9212 — —
443-479 WATERLO236 9212 — —
443-482 ANNAPOLIS 9212 — Yes
443-512 EDGEWOOD 9212 — Yes
443-518 COLUMBIA 9212 2008-12-16 Yes
443-523 SALISBURY 9212 — Yes
443-535 COLUMBIA 9212 — Yes
443-543 ARBUTUS 9212 — Yes
443-546 COLUMBIA 9212 — Yes
443-552 BALTIMORE 9212 — Yes
443-556 COCKEYSVL 9212 — —
443-572 GLENBURNIE 9212 — Yes
443-612 CATONSVL 9212 — —
443-634 WATERLO236 9212 2011-11-09 Yes
443-643 BEL AIR 9212 — Yes
443-654 WATERLO236 9212 2008-08-28 Yes
443-663 WOODLAWN 9212 — Yes
443-678 PARKVILLE 9212 — Yes
443-734 SEVERN 9212 — Yes
443-755 WATERLO238 9212 — Yes
443-770 ARGRGBSNIS 9212 — Yes
443-777 ESSEX 9212 — Yes
443-778 WATERLO236 9212 — Yes
443-792 BRYNPKLNCM 9212 2007-10-18 Yes
443-841 TOWSON 9212 — Yes
443-843 HAVREGRACE 9212 — Yes
443-849 TOWSON 9212 2001-05-18 —
443-861 ABERDEEN 9212 2009-08-13 Yes
443-868 ESSEX 9212 — Yes
443-879 DUNDALK 9212 — Yes
443-885 BALTIMORE 9212 — Yes
443-967 NORTH EAST 9212 2001-04-20 Yes
443-984 BALTIMORE 9212 — —
443-997 BALTIMORE 9212 — —
443-998 PARKVILLE 9212 2001-03-19 Yes
443-999 BALTIMORE 9212 — —

These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.