NPA
NXX
CLLI
City, ST
Telco
410
239
HMPSMDHERS1
REISTERSTN
VERIZON MARYLAND INC.
410
517
RSTWMDRSDS0
REISTERSTN
VERIZON MARYLAND INC.
410
526
RSTWMDRSDS0
REISTERSTN
VERIZON MARYLAND INC.
410
702
BLTMMDDNDS0
REISTERSTN
MCIMETRO ATS INC.
410
833
RSTWMDRSDS0
REISTERSTN
VERIZON MARYLAND INC.
410
840
WMNSMDWMDS0
REISTERSTN
VERIZON MARYLAND INC.
410
876
WMNSMDWMDS0
REISTERSTN
VERIZON MARYLAND INC.
443
273
CLMAMDNIDS1
REISTERSTN
TELEPORT COMMUNICATIONS GROUP AMERICA INC. - MD
443
381
BLTMMDDN4MD
REISTERSTN
GLOBAL NAPS SOUTH INC. - MD
443
522
BLTMMDCHW29
REISTERSTN
PAETEC COMMUNICATIONS INC.- MD
443
590
BLTOMDXIDS0
REISTERSTN
GLOBAL CROSSING LOCAL SERVICES INC.-MD
443
650
BLTMMDCDDS0
REISTERSTN
ALLEGIANCE TELECOM INC. - MD
443
712
BLTMMDSNDS0
REISTERSTN
CAVALIER EAST LLC - MD
443
744
HNVAMDBIW01
REISTERSTN
NEXTEL COMMUNICATIONS