Hertfordshire |
Welwyn Garden City |
565000 |
565999 |
Suretec Systems Ltd |
G |
Hertfordshire |
Welwyn Garden City |
566000 |
566999 |
Telappliant Ltd |
G |
Hertfordshire |
Welwyn Garden City |
567000 |
567999 |
Windsor Telecom Plc |
G |
Hertfordshire |
Welwyn Garden City |
568000 |
568999 |
Numbergroup Network Ltd |
G |
Hertfordshire |
Welwyn Garden City |
569000 |
569999 |
Phone Co-Op Numbering Limited |
G |
Hertfordshire |
Welwyn Garden City |
581000 |
581999 |
Invosys Limited |
G |
Hertfordshire |
Welwyn Garden City |
582000 |
582999 |
Minotaur Telecom Limited |
G |
Hertfordshire |
Welwyn Garden City |
583000 |
583999 |
Nexbridge Communications Limited |
G |
Hertfordshire |
Welwyn Garden City |
585000 |
585999 |
IP Base Ltd |
G |
Hertfordshire |
Welwyn Garden City |
586000 |
586999 |
British Sky Broadcasting Limited |
G |
Hertfordshire |
Welwyn Garden City |
587000 |
587999 |
BT |
G |
Hertfordshire |
Welwyn Garden City |
588000 |
588999 |
Invoco Ltd |
G |
Hertfordshire |
Welwyn Garden City |
589000 |
589999 |
Tuxtel Ltd |
G |
Hertfordshire |
Welwyn Garden City |
590000 |
590999 |
IOVOX Limited |
G |
Hertfordshire |
Welwyn Garden City |
591000 |
591999 |
Ziron (UK) Ltd |
G |
Hertfordshire |
Welwyn Garden City |
592000 |
592999 |
British Sky Broadcasting Limited |
G |
Hertfordshire |
Welwyn Garden City |
593000 |
593999 |
Media Hawk Ltd |
G |
Hertfordshire |
Welwyn Garden City |
594000 |
594999 |
Kalnet4u Ltd |
G |
Hertfordshire |
Welwyn Garden City |
595000 |
595999 |
Magnetic North Software Limited |
G |
Hertfordshire |
Welwyn Garden City |
596000 |
596999 |
British Sky Broadcasting Limited |
G |
Hertfordshire |
Welwyn Garden City |
597000 |
597999 |
Content Guru Ltd |
G |
Hertfordshire |
Welwyn Garden City |
598000 |
598999 |
XoverX Ltd |
G |
Hertfordshire |
Welwyn Garden City |
599000 |
599999 |
We Love Communications Limited |
G |
Hertfordshire |
Welwyn Garden City |
600000 |
609999 |
BT |
G |
Hertfordshire |
Welwyn Garden City |
610000 |
610999 |
Virgin Media Limited |
G |
Hertfordshire |
Welwyn Garden City |
611000 |
611999 |
Virgin Media Limited |
G |
Hertfordshire |
Welwyn Garden City |
612000 |
612999 |
Virgin Media Limited |
G |
Hertfordshire |
Welwyn Garden City |
619000 |
619999 |
Virgin Media Limited |
G |
Hertfordshire |
Welwyn Garden City |
620000 |
629999 |
BT |
G |
Hertfordshire |
Welwyn Garden City |
630000 |
639999 |
BT |
G |
Hertfordshire |
Welwyn Garden City |
640000 |
649999 |
BT |
G |
Hertfordshire |
Welwyn Garden City |
650000 |
659999 |
BT |
G |
Hertfordshire |
Welwyn Garden City |
660000 |
669999 |
BT |
G |
Hertfordshire |
Welwyn Garden City |
670000 |
679999 |
BT |
G |
Hertfordshire |
Welwyn Garden City |
686000 |
686999 |
Nexbridge Communications Limited |
G |
Hertfordshire |
Welwyn Garden City |
687000 |
687999 |
NFON UK Ltd. |
G |
Hertfordshire |
Welwyn Garden City |
688000 |
688999 |
Hemshore Ltd |
G |
Hertfordshire |
Welwyn Garden City |
690000 |
699999 |
Virgin Media Limited |
G |
Hertfordshire |
Welwyn Garden City |
707000 |
707999 |
TalkTalk Communications Limited |
G |
Hertfordshire |
Welwyn Garden City |
708000 |
708999 |
TalkTalk Communications Limited |
G |
Hertfordshire |
Welwyn Garden City |
709000 |
709999 |
TalkTalk Communications Limited |
G |
Hertfordshire |
Welwyn Garden City |
710000 |
710999 |
VoiceHost Limited |
G |
Hertfordshire |
Welwyn Garden City |
730000 |
739999 |
FleXtel Limited |
G |
Hertfordshire |
Welwyn Garden City |
750000 |
750999 |
Digitech Solutions Global Limited |
G |
Hertfordshire |
Welwyn Garden City |
760000 |
769999 |
Syntec Limited |
G |
Hertfordshire |
Welwyn Garden City |
770000 |
779999 |
IV Response Limited |
G |
Hertfordshire |
Welwyn Garden City |
782000 |
782999 |
Served Up Limited. |
G |
Hertfordshire |
Welwyn Garden City |
783000 |
783999 |
Served Up Limited. |
G |
Hertfordshire |
Welwyn Garden City |
790000 |
799999 |
X-Pilot Limited |
G |
Hertfordshire |
Welwyn Garden City |
800000 |
809999 |
BT |
G |
Hertfordshire |
Welwyn Garden City |
810000 |
810999 |
Magrathea Telecommunications Limited |
G |
Hertfordshire |
Welwyn Garden City |
811000 |
811999 |
Magrathea Telecommunications Limited |
G |
Hertfordshire |
Welwyn Garden City |
816000 |
816999 |
Magrathea Telecommunications Limited |
G |
Hertfordshire |
Welwyn Garden City |
817000 |
817999 |
Magrathea Telecommunications Limited |
G |
Hertfordshire |
Welwyn Garden City |
818000 |
818999 |
Magrathea Telecommunications Limited |
G |
Hertfordshire |
Welwyn Garden City |
819000 |
819999 |
Magrathea Telecommunications Limited |
G |
Hertfordshire |
Welwyn Garden City |
820000 |
829999 |
Vodafone Ltd (C&W) |
G |
Hertfordshire |
Welwyn Garden City |
830000 |
839999 |
aql Wholesale Limited |
G |
Hertfordshire |
Welwyn Garden City |
840000 |
849999 |
Vodafone Ltd (C&W) |
G |
Hertfordshire |
Welwyn Garden City |
850000 |
859999 |
Virgin Media Limited |
G |
Hertfordshire |
Welwyn Garden City |
861000 |
861999 |
Affiniti Integrated Solutions Ltd |
G |
Hertfordshire |
Welwyn Garden City |
862000 |
862999 |
Affiniti Integrated Solutions Ltd |
G |
Hertfordshire |
Welwyn Garden City |
867000 |
867999 |
Affiniti Integrated Solutions Ltd |
G |
Hertfordshire |
Welwyn Garden City |
868000 |
868999 |
Affiniti Integrated Solutions Ltd |
G |
Hertfordshire |
Welwyn Garden City |
870000 |
879999 |
BT |
G |
Hertfordshire |
Welwyn Garden City |
880000 |
889999 |
Virgin Media Limited |
G |
Hertfordshire |
Welwyn Garden City |
890000 |
899999 |
Virgin Media Limited |
G |
Hertfordshire |
Welwyn Garden City |
900000 |
900999 |
Radius Communications Limited |
G |
Hertfordshire |
Welwyn Garden City |
901000 |
901999 |
iHub UK Ltd |
G |
Hertfordshire |
Welwyn Garden City |
902000 |
902999 |
Vonage Limited |
G |
Hertfordshire |
Welwyn Garden City |
903000 |
903999 |
BT |
G |
Hertfordshire |
Welwyn Garden City |
904000 |
904999 |
Affiniti Integrated Solutions Ltd |
G |
Hertfordshire |
Welwyn Garden City |
905000 |
905999 |
M247 Ltd |
G |
Hertfordshire |
Welwyn Garden City |
906000 |
906999 |
COLT Technology Services |
G |
Hertfordshire |
Welwyn Garden City |
907000 |
907999 |
YayYay Limited |
G |
Hertfordshire |
Welwyn Garden City |
908000 |
908999 |
Telecoms Cloud Networks Limited |
G |
Hertfordshire |
Welwyn Garden City |
909000 |
909999 |
COLT Technology Services |
G |
Hertfordshire |
Welwyn Garden City |
910000 |
910999 |
I.T Communications Limited |
G |
Hertfordshire |
Welwyn Garden City |
911000 |
911999 |
Sky UK Limited |
G |
Hertfordshire |
Welwyn Garden City |
912000 |
912999 |
BT |
G |
Hertfordshire |
Welwyn Garden City |
913000 |
913999 |
BT |
G |
Hertfordshire |
Welwyn Garden City |
914000 |
914999 |
BT |
G |
Hertfordshire |
Welwyn Garden City |
915000 |
915999 |
BT |
G |
Hertfordshire |
Welwyn Garden City |
916000 |
916999 |
BT |
G |
Hertfordshire |
Welwyn Garden City |
917000 |
917999 |
BT |
G |
Hertfordshire |
Welwyn Garden City |
918000 |
918999 |
BT |
G |