NRNumberResearch Membership · Data 09/17/2026

← Area code 443

CORE COMMUNICATIONS, INC.- MD

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

Prefixes held by CORE COMMUNICATIONS, INC.- MD in area code 443
NPA-NXXRate centerOCNAssignedPooled
443-215 CHESTERTN 2593 — —
443-217 ANNAPOLIS 2593 — —
443-232 WILLARDS 2593 — Yes
443-236 CARDIFF 2593 — —
443-237 NORTHBEACH 2593 — —
443-246 ELKTON 2593 — —
443-264 PIKESVILLE 2593 — Yes
443-268 BALTIMORE 2593 — —
443-269 TOWSON 2593 — Yes
443-284 WATERLO238 2593 — Yes
443-337 SPARROWSPT 2593 — Yes
443-344 SEVERNA PK 2593 — —
443-346 SEVERNA PK 2593 — Yes
443-349 SILVER RUN 2593 — —
443-361 SYKESVILLE 2593 — —
443-363 SEVERN 2593 — Yes
443-368 WESTMINSTR 2593 — —
443-369 BEL AIR 2593 — —
443-382 CAMBRIDGE 2593 — —
443-385 EASTON 2593 — —
443-387 POCOMOKE 2593 — —
443-389 SALISBURY 2593 — —
443-427 PRINCEANNE 2593 — —
443-428 COCKEYSVL 2593 — —
443-431 RANDALLSTN 2593 — Yes
443-586 DUNDALK 2593 — Yes
443-592 ELKRIDGE 2593 — Yes
443-596 ESSEX 2593 — Yes
443-628 GLENBURNIE 2593 — Yes
443-665 NANTICOKE 2593 — Yes
443-747 PT DEPOSIT 2593 2002-02-22 Yes
443-856 OCEAN CITY 2593 2002-07-02 Yes
443-912 TOWSON 2593 2002-07-02 Yes
443-946 PARKVILLE 2593 — Yes

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.