NPA
NXX
CLLI
City, ST
Telco
410
401
BLTMMDDNDS0
BRYNPKLNCM
MCIMETRO ATS INC.
410
589
LARLMDCC1MD
BRYNPKLNCM
XSPEDIUS MANAGEMENT CO SWITCHES SERVICES LLC - MD
410
609
BRKLMDBKDS0
BRYNPKLNCM
VERIZON MARYLAND INC.
410
636
BRKLMDBKDS0
BRYNPKLNCM
VERIZON MARYLAND INC.
410
789
BRKLMDBKDS0
BRYNPKLNCM
VERIZON MARYLAND INC.
443
312
BLTOMDXIDS0
BRYNPKLNCM
GLOBAL CROSSING LOCAL SERVICES INC.-MD
443
335
BLTMMDDN4MD
BRYNPKLNCM
GLOBAL NAPS SOUTH INC. - MD
443
400
BLTMMDSN5MD
BRYNPKLNCM
XO MARYLAND LLC
443
457
BLTMMDFMDS0
BRYNPKLNCM
TELEPORT COMMUNICATIONS GROUP AMERICA INC. - MD
443
673
BLTMMDSNDS0
BRYNPKLNCM
CAVALIER EAST LLC - MD
443
723
CHNTVADHDS0
BRYNPKLNCM
TIDALWAVE TELEPHONE INC.
443
773
BLTMMDCDDS0
BRYNPKLNCM
ALLEGIANCE TELECOM INC. - MD