NPA
NXX
CLLI
City, ST
Telco
410
939
HDGRMDHVDS0
HAVREGRACE
VERIZON MARYLAND INC.
410
942
HDGRMDHVDS0
HAVREGRACE
VERIZON MARYLAND INC.
443
209
BLARMDBL1MD
HAVREGRACE
CAVALIER TELEPHONE LLC (MID-ATLANTIC) - MD
443
502
BLTMMDFMDS0
HAVREGRACE
TELEPORT COMMUNICATIONS GROUP AMERICA INC. - MD
443
526
BLTMMDDN4MD
HAVREGRACE
GLOBAL NAPS SOUTH INC. - MD
443
843
HDGRMDHVDS0
HAVREGRACE
VERIZON MARYLAND INC.