NPA
NXX
CLLI
City, ST
Telco
410
388
NRPNMDNPDS0
SPARROWSPT
VERIZON MARYLAND INC.
410
477
NRPNMDNPDS0
SPARROWSPT
VERIZON MARYLAND INC.
410
709
BLTMMDDNDS0
SPARROWSPT
MCIMETRO ATS INC.
443
242
BLTMMDSNDS0
SPARROWSPT
CAVALIER EAST LLC - MD
443
337
BLTMMDDN4MD
SPARROWSPT
GLOBAL NAPS SOUTH INC. - MD
443
408
BLTMMDSN5MD
SPARROWSPT
XO MARYLAND LLC
443
594
BLTOMDXIDS0
SPARROWSPT
GLOBAL CROSSING LOCAL SERVICES INC.-MD
443
649
CLMAMDJTDS0
SPARROWSPT
US LEC OF MARYLAND INC.
443
943
BLTMMDFMDS0
SPARROWSPT
TELEPORT COMMUNICATIONS GROUP AMERICA INC. - MD