NPA
NXX
CLLI
City, ST
Telco
410
331
SVGHMDAQCM0
ELKRIDGE
ARCH WIRELESS HOLDINGS INC.
410
379
EKRGMDELDS0
ELKRIDGE
VERIZON MARYLAND INC.
410
407
EKRGMDELDS0
ELKRIDGE
VERIZON MARYLAND INC.
410
460
SVGHMDAQCM0
ELKRIDGE
ARCH WIRELESS HOLDINGS INC.
410
471
EKRGMDELDS0
ELKRIDGE
VERIZON MARYLAND INC.
410
478
SVGHMDAQCM0
ELKRIDGE
ARCH WIRELESS HOLDINGS INC.
410
503
EKRGMDELDS0
ELKRIDGE
VERIZON MARYLAND INC.
410
540
EKRGMDELDS0
ELKRIDGE
VERIZON MARYLAND INC.
410
564
BLTMMDFMDS0
ELKRIDGE
TELEPORT COMMUNICATIONS GROUP AMERICA INC. - MD
410
567
BLTMMDDNDS0
ELKRIDGE
MCIMETRO ATS INC.
410
579
EKRGMDELDS0
ELKRIDGE
VERIZON MARYLAND INC.
410
678
SVGHMDAQCM0
ELKRIDGE
ARCH WIRELESS HOLDINGS INC.
410
712
EKRGMDPKRS0
ELKRIDGE
VERIZON MARYLAND INC.
410
717
LARLMDCC1MD
ELKRIDGE
XSPEDIUS MANAGEMENT CO SWITCHES SERVICES LLC - MD
410
782
EKRGMDPKRS0
ELKRIDGE
VERIZON MARYLAND INC.
410
796
EKRGMDELDS0
ELKRIDGE
VERIZON MARYLAND INC.
410
909
SVGHMDAQCM0
ELKRIDGE
ARCH WIRELESS HOLDINGS INC.
410
929
SVGHMDAQCM0
ELKRIDGE
ARCH WIRELESS HOLDINGS INC.
410
932
SVGHMDAQCM0
ELKRIDGE
ARCH WIRELESS HOLDINGS INC.
443
445
HNVAMDATDS0
ELKRIDGE
SBC TELECOM INC. - MD
443
459
BLTMMDCHX8Z
ELKRIDGE
SPRINT COMMUNICATIONS COMPANY L.P. - MD
443
492
BLTOMDXIDS0
ELKRIDGE
GLOBAL CROSSING LOCAL SERVICES INC.-MD
443
561
CLMAMDJTDS0
ELKRIDGE
US LEC OF MARYLAND INC.
443
592
BLTMMDDN4MD
ELKRIDGE
GLOBAL NAPS SOUTH INC. - MD
443
757
BLTMMDSNDS0
ELKRIDGE
CAVALIER EAST LLC - MD
443
820
BLTMMDAFDS0
ELKRIDGE
WINSTAR COMMUNICATIONS LLC - MD