Code allocations for the 01661 STD code

Summary

  • Status
    • Allocated: 97
    • Free: 3
    • Free for National Dialling Only: 20
    • Protected: 259
  • Operators : 84
  • Latest change : July 2012
Click here for Status definitions
Have you received a call from a number beginning 01661? Get information on a full number beginning 01661, using our full UK number search.
Find out about the location and calling costs for 01661 numbers on our 01661 code page.

This page contains information about which telephone companies the various 01661 numbers are allocated to.

First Digits Status Communications Provider Number Length Notes Change
01661 00 Free for National Dialling Only - (0)+10 - -
01661 01 Free for National Dialling Only - (0)+10 - -
01661 02 Free for National Dialling Only - (0)+10 - -
01661 03 Free for National Dialling Only - (0)+10 - -
01661 04 Free for National Dialling Only - (0)+10 - -
01661 05 Free for National Dialling Only - (0)+10 - -
01661 06 Free for National Dialling Only - (0)+10 - -
01661 07 Free for National Dialling Only - (0)+10 - -
01661 08 Free for National Dialling Only - (0)+10 - -
01661 09 Free for National Dialling Only - (0)+10 - -
01661 10 Free for National Dialling Only - (0)+10 - -
01661 11 Free for National Dialling Only - (0)+10 - -
01661 12 Free for National Dialling Only - (0)+10 - -
01661 13 Free for National Dialling Only - (0)+10 - -
01661 14 Free for National Dialling Only - (0)+10 - -
01661 15 Free for National Dialling Only - (0)+10 - -
01661 16 Free for National Dialling Only - (0)+10 - -
01661 17 Free for National Dialling Only - (0)+10 - -
01661 18 Free for National Dialling Only - (0)+10 - -
01661 19 Free for National Dialling Only - (0)+10 - -
01661 200 Protected - 4+6 - -
01661 201 Protected - 4+6 - -
01661 202 Protected - 4+6 - -
01661 203 Protected - 4+6 - -
01661 204 Protected - 4+6 - -
01661 205 Protected - 4+6 - -
01661 206 Protected - 4+6 - -
01661 207 Protected - 4+6 - -
01661 208 Protected - 4+6 - -
01661 209 Protected - 4+6 - -
01661 21 Allocated BT 4+6 - 01/02/1995
01661 22 Allocated Syntec Limited 4+6 - 23/12/2005
01661 230 Allocated Inclarity Communications Ltd 4+6 - 05/03/2006
01661 231 Allocated Inclarity Communications Ltd 4+6 - 05/03/2006
01661 232 Allocated Inclarity Communications Ltd 4+6 - 05/03/2006
01661 233 Protected - 4+6 - -
01661 234 Protected - 4+6 - -
01661 235 Allocated Inclarity Communications Ltd 4+6 - 05/03/2006
01661 236 Protected - 4+6 - -
01661 237 Protected - 4+6 - -
01661 238 Protected - 4+6 - -
01661 239 Protected - 4+6 - -
01661 240 Protected - 4+6 - -
01661 241 Protected - 4+6 - -
01661 242 Protected - 4+6 - -
01661 243 Protected - 4+6 - -
01661 244 Protected - 4+6 - -
01661 245 Protected - 4+6 - -
01661 246 Protected - 4+6 - -
01661 247 Protected - 4+6 - -
01661 248 Protected - 4+6 - -
01661 249 Protected - 4+6 - -
01661 25 Allocated TTNC Limited 4+6 F-Digits '0,1,2,3,4,5,6,7,8,9' 28/09/2006
01661 26 Allocated Net Solutions Europe Limited 4+6 F-Digit '6' 21/02/2006
01661 270 Protected - 4+6 - -
01661 271 Protected - 4+6 - -
01661 272 Protected - 4+6 - -
01661 273 Protected - 4+6 - -
01661 274 Protected - 4+6 - -
01661 275 Protected - 4+6 - -
01661 276 Protected - 4+6 - -
01661 277 Allocated Spitfire Network Services Ltd 4+6 - 11/11/2011
01661 278 Protected - 4+6 - -
01661 279 Protected - 4+6 - -
01661 28 Allocated TelNG Limited 4+6 F-Digit '2' 28/02/2007
01661 29 Allocated Localphone Limited 4+6 F-Digit '0' 10/05/2007
01661 30 Allocated Frontier Systems Ltd 4+6 F-Digit '3' 27/09/2007
01661 31 Allocated Telephony Services Limited 4+6 F-Digit '2' 21/12/2007
01661 32 Allocated Barritel Limited 4+6 F-Digit '2' 27/06/2007
01661 33 Allocated Teledesign Ltd 4+6 F-Digit '2' 28/09/2007
01661 34 Allocated (aq) Limited trading as aql 4+6 - 03/10/2007
01661 350 Protected - 4+6 - -
01661 351 Protected - 4+6 - -
01661 352 Protected - 4+6 - -
01661 353 Protected - 4+6 - -
01661 354 Protected - 4+6 - -
01661 355 Protected - 4+6 - -
01661 356 Protected - 4+6 - -
01661 357 Allocated Premium O Limited 4+6 - 04/02/2008
01661 358 Protected - 4+6 - -
01661 359 Protected - 4+6 - -
01661 36 Allocated InTechnology Plc 4+6 F-Digit '2' 19/11/2007
01661 37 Allocated VoIP-Un Limited 4+6 F-Digit '0' 01/11/2007
01661 38 Allocated Telecom2 Ltd 4+6 F-Digit '6' 11/09/2009
01661 39 Allocated Nationwide Telephone Assistance Ltd 4+6 F-Digit '0' 15/10/2007
01661 40 Allocated Timico Limited 4+6 F-Digit '8' 19/05/2008
01661 41 Allocated Nodemax Limited 4+6 F-Digit '0' 14/07/2008
01661 42 Allocated Starcomm Ltd 4+6 F-Digit '0' 22/09/2008
01661 430 Allocated Voxbone SA 4+6 - 12/12/2011
01661 431 Protected - 4+6 - -
01661 432 Protected - 4+6 - -
01661 433 Protected - 4+6 - -
01661 434 Protected - 4+6 - -
01661 435 Protected - 4+6 - -
01661 436 Protected - 4+6 - -
01661 437 Protected - 4+6 - -
01661 438 Protected - 4+6 - -
01661 439 Protected - 4+6 - -
01661 44 Allocated Net-Work Internet Ltd 4+6 F-Digit '4' 21/07/2008
01661 45 Allocated 3C Limited 4+6 F-Digit '2' 01/10/2008
01661 46 Allocated Served Up Limited. 4+6 F-Digit '3' 14/10/2008
01661 47 Allocated Solutios Limited 4+6 F-Digit '2' 20/11/2008
01661 48 Allocated IPV6 Limited 4+6 F-Digit '0' 13/02/2009
01661 49 Allocated Mars Communications Limited 4+6 F-Digit '0' 19/02/2009
01661 500 Protected - 4+6 - -
01661 501 Protected - 4+6 - -
01661 502 Protected - 4+6 - -
01661 503 Protected - 4+6 - -
01661 504 Protected - 4+6 - -
01661 505 Protected - 4+6 - -
01661 506 Protected - 4+6 - -
01661 507 Protected - 4+6 - -
01661 508 Protected - 4+6 - -
01661 509 Allocated Vodafone Ltd (Thus) 4+6 - 22/03/1999
01661 51 Allocated BT 4+6 - 15/07/1994
01661 52 Allocated Gamma Telecom Holdings Ltd 4+6 - 25/04/2005
01661 530 Allocated Linear Telecoms Limited 4+6 - 14/10/2010
01661 531 Allocated TalkTalk Communications Limited 4+6 - 26/09/2011
01661 532 Allocated Hello Telecom (UK) PLC 4+6 - 17/11/2011
01661 533 Allocated Barritec Limited 4+6 - 28/09/2011
01661 534 Allocated Internexus Networks Limited 4+6 - 22/11/2011
01661 535 Allocated iNet Telecoms Ltd (Voipfone) 4+6 - 17/10/2011
01661 536 Allocated Simwood eSMS Limited 4+6 - 02/02/2012
01661 537 Allocated Broadcast Telecom Ltd 4+6 - 29/02/2012
01661 538 Allocated Invoco Ltd 4+6 - 29/02/2012
01661 539 Allocated Bicom Systems EURL 4+6 - 01/03/2012
01661 540 Allocated Six Degrees Unified Comms Limited 4+6 - 29/11/2012
01661 541 Protected - 4+6 - -
01661 542 Protected - 4+6 - -
01661 543 Protected - 4+6 - -
01661 544 Allocated Six Degrees Unified Comms Limited 4+6 - 18/11/2013
01661 545 Protected - 4+6 - -
01661 546 Protected - 4+6 - -
01661 547 Protected - 4+6 - -
01661 548 Protected - 4+6 - -
01661 549 Protected - 4+6 - -
01661 55 Allocated Affiniti Integrated Solutions Ltd 4+6 - 15/01/2004
01661 56 Allocated Edge Telecom Limited 4+6 - 08/04/2005
01661 57 Allocated FleXtel Limited 4+6 - 10/11/2005
01661 580 Protected - 4+6 - -
01661 581 Protected - 4+6 - -
01661 582 Protected - 4+6 - -
01661 583 Protected - 4+6 - -
01661 584 Protected - 4+6 - -
01661 585 Protected - 4+6 - -
01661 586 Protected - 4+6 - -
01661 587 Protected - 4+6 - -
01661 588 Protected - 4+6 - -
01661 589 Protected - 4+6 - -
01661 590 Protected - 4+6 - -
01661 591 Protected - 4+6 - -
01661 592 Protected - 4+6 - -
01661 593 Protected - 4+6 - -
01661 594 Protected - 4+6 - -
01661 595 Protected - 4+6 - -
01661 596 Protected - 4+6 - -
01661 597 Protected - 4+6 - -
01661 598 Allocated TalkTalk Communications Limited 4+6 - 22/05/2007
01661 599 Allocated TalkTalk Communications Limited 4+6 - 22/05/2007
01661 60 Allocated Andrews & Arnold (Numbers) Ltd 4+6 F-Digit '0' 27/03/2009
01661 61 Allocated British Sky Broadcasting Limited 4+6 F-Digits '0' 15/04/2009
01661 62 Allocated Telecoms World Direct Ltd 4+6 F-Digit '0' 28/04/2009
01661 63 Allocated X-Pilot Limited 4+6 F-Digit '0' 17/06/2009
01661 64 Allocated Mundio Mobile Limited 4+6 F-Digit '6' 01/07/2009
01661 65 Allocated Nexus Telecommunications Limited 4+6 F-Digit '0' 11/06/2009
01661 66 Allocated CFL Communications Limited 4+6 F-Digit '0' 14/07/2009
01661 670 Allocated Digitech Solutions Global Limited 4+6 - 27/04/2010
01661 671 Free - 4+6 - -
01661 672 Allocated Windsor Telecom Plc 4+6 - 22/07/2010
01661 673 Allocated Telephone Box Limited 4+6 - 15/12/2010
01661 674 Allocated Cheers International Sales Limited 4+6 - 15/12/2010
01661 675 Allocated Phone Co-Op Numbering Limited 4+6 - 23/12/2010
01661 676 Allocated Suretec Systems Ltd 4+6 - 07/05/2010
01661 677 Allocated Atomstream Limited 4+6 - 14/05/2010
01661 678 Allocated Telappliant Ltd 4+6 - 21/06/2010
01661 679 Allocated VoiceHost Limited 4+6 - 05/10/2010
01661 68 Allocated Known Communications Limited 4+6 F-Digit '0' 18/09/2009
01661 690 Allocated Invosys Limited 4+6 - 19/01/2011
01661 691 Allocated IP Base Ltd 4+6 - 03/02/2011
01661 692 Allocated Nexbridge Communications Limited 4+6 - 17/03/2011
01661 693 Allocated Globecom International Limited 4+6 - 04/01/2011
01661 694 Allocated Tesla Dynamic Ltd 4+6 - 07/07/2011
01661 695 Allocated API Telecom Limited 4+6 - 05/04/2012
01661 696 Allocated ICC Networks Ltd 4+6 - 16/07/2012
01661 697 Allocated IOVOX Limited 4+6 - 04/07/2012
01661 698 Allocated Ziron (UK) Ltd 4+6 - 31/07/2012
01661 699 Allocated We Love Communications Limited 4+6 - 13/08/2012
01661 70 Allocated Danemere Street Creative 4+6 F-Digit '2' 22/07/2009
01661 710 Allocated Content Guru Ltd 4+6 - 12/10/2012
01661 711 Allocated Minotaur Telecom Limited 4+6 - 05/02/2013
01661 712 Allocated TG Support Limited 4+6 - 02/04/2013
01661 713 Allocated Kalnet4u Ltd 4+6 - 30/05/2013
01661 714 Allocated i-Net Communications Group Plc 4+6 - 03/07/2013
01661 715 Allocated iHub UK Ltd 4+6 - 18/06/2014
01661 716 Free - 4+6 - -
01661 717 Allocated Radius Communications Limited 4+6 - 08/01/2014
01661 718 Free - 4+6 - -
01661 719 Allocated XoverX Ltd 4+6 - 29/04/2013
01661 720 Protected - 4+6 - -
01661 721 Protected - 4+6 - -
01661 722 Protected - 4+6 - -
01661 723 Protected - 4+6 - -
01661 724 Protected - 4+6 - -
01661 725 Protected - 4+6 - -
01661 726 Protected - 4+6 - -
01661 727 Protected - 4+6 - -
01661 728 Protected - 4+6 - -
01661 729 Protected - 4+6 - -
01661 730 Protected - 4+6 - -
01661 731 Protected - 4+6 - -
01661 732 Protected - 4+6 - -
01661 733 Protected - 4+6 - -
01661 734 Protected - 4+6 - -
01661 735 Protected - 4+6 - -
01661 736 Protected - 4+6 - -
01661 737 Protected - 4+6 - -
01661 738 Protected - 4+6 - -
01661 739 Protected - 4+6 - -
01661 740 Protected - 4+6 - -
01661 741 Protected - 4+6 - -
01661 742 Protected - 4+6 - -
01661 743 Protected - 4+6 - -
01661 744 Protected - 4+6 - -
01661 745 Protected - 4+6 - -
01661 746 Protected - 4+6 - -
01661 747 Protected - 4+6 - -
01661 748 Protected - 4+6 - -
01661 749 Protected - 4+6 - -
01661 750 Protected - 4+6 - -
01661 751 Protected - 4+6 - -
01661 752 Protected - 4+6 - -
01661 753 Protected - 4+6 - -
01661 754 Protected - 4+6 - -
01661 755 Protected - 4+6 - -
01661 756 Protected - 4+6 - -
01661 757 Protected - 4+6 - -
01661 758 Protected - 4+6 - -
01661 759 Protected - 4+6 - -
01661 760 Protected - 4+6 - -
01661 761 Protected - 4+6 - -
01661 762 Protected - 4+6 - -
01661 763 Protected - 4+6 - -
01661 764 Protected - 4+6 - -
01661 765 Protected - 4+6 - -
01661 766 Protected - 4+6 - -
01661 767 Protected - 4+6 - -
01661 768 Protected - 4+6 - -
01661 769 Protected - 4+6 - -
01661 770 Protected - 4+6 - -
01661 771 Protected - 4+6 - -
01661 772 Protected - 4+6 - -
01661 773 Protected - 4+6 - -
01661 774 Protected - 4+6 - -
01661 775 Protected - 4+6 - -
01661 776 Protected - 4+6 - -
01661 777 Protected - 4+6 - -
01661 778 Protected - 4+6 - -
01661 779 Protected - 4+6 - -
01661 780 Protected - 4+6 - -
01661 781 Protected - 4+6 - -
01661 782 Protected - 4+6 - -
01661 783 Protected - 4+6 - -
01661 784 Protected - 4+6 - -
01661 785 Protected - 4+6 - -
01661 786 Protected - 4+6 - -
01661 787 Protected - 4+6 - -
01661 788 Protected - 4+6 - -
01661 789 Protected - 4+6 - -
01661 790 Protected - 4+6 - -
01661 791 Protected - 4+6 - -
01661 792 Protected - 4+6 - -
01661 793 Protected - 4+6 - -
01661 794 Protected - 4+6 - -
01661 795 Protected - 4+6 - -
01661 796 Protected - 4+6 - -
01661 797 Protected - 4+6 - -
01661 798 Protected - 4+6 - -
01661 799 Protected - 4+6 - -
01661 80 Allocated Vodafone Ltd (C&W) 4+6 - 15/02/2010
01661 81 Allocated Vodafone Ltd (Energis) 4+6 - 26/05/2006
01661 82 Allocated BT 4+6 - 15/07/1994
01661 83 Allocated BT 4+6 - 15/07/1994
01661 84 Allocated BT 4+6 - 15/07/1994
01661 85 Allocated BT 4+6 - 15/07/1994
01661 86 Allocated BT 4+6 - 15/07/1994
01661 87 Allocated BT 4+6 - 15/07/1994
01661 88 Allocated BT 4+6 - 15/07/1994
01661 89 Allocated Magrathea Telecommunications Limited 4+6 - 24/09/2004
01661 900 Protected - 4+6 - -
01661 901 Protected - 4+6 - -
01661 902 Protected - 4+6 - -
01661 903 Protected - 4+6 - -
01661 904 Protected - 4+6 - -
01661 905 Protected - 4+6 - -
01661 906 Protected - 4+6 - -
01661 907 Protected - 4+6 - -
01661 908 Protected - 4+6 - -
01661 909 Protected - 4+6 - -
01661 910 Protected - 4+6 - -
01661 911 Protected - 4+6 - -
01661 912 Protected - 4+6 - -
01661 913 Protected - 4+6 - -
01661 914 Protected - 4+6 - -
01661 915 Protected - 4+6 - -
01661 916 Protected - 4+6 - -
01661 917 Protected - 4+6 - -
01661 918 Protected - 4+6 - -
01661 919 Protected - 4+6 - -
01661 920 Protected - 4+6 - -
01661 921 Protected - 4+6 - -
01661 922 Protected - 4+6 - -
01661 923 Protected - 4+6 - -
01661 924 Protected - 4+6 - -
01661 925 Protected - 4+6 - -
01661 926 Protected - 4+6 - -
01661 927 Protected - 4+6 - -
01661 928 Protected - 4+6 - -
01661 929 Protected - 4+6 - -
01661 930 Protected - 4+6 - -
01661 931 Protected - 4+6 - -
01661 932 Protected - 4+6 - -
01661 933 Protected - 4+6 - -
01661 934 Protected - 4+6 - -
01661 935 Protected - 4+6 - -
01661 936 Protected - 4+6 - -
01661 937 Protected - 4+6 - -
01661 938 Protected - 4+6 - -
01661 939 Protected - 4+6 - -
01661 940 Protected - 4+6 - -
01661 941 Protected - 4+6 - -
01661 942 Protected - 4+6 - -
01661 943 Protected - 4+6 - -
01661 944 Protected - 4+6 - -
01661 945 Protected - 4+6 - -
01661 946 Protected - 4+6 - -
01661 947 Protected - 4+6 - -
01661 948 Protected - 4+6 - -
01661 949 Protected - 4+6 - -
01661 950 Protected - 4+6 - -
01661 951 Protected - 4+6 - -
01661 952 Protected - 4+6 - -
01661 953 Protected - 4+6 - -
01661 954 Protected - 4+6 - -
01661 955 Protected - 4+6 - -
01661 956 Protected - 4+6 - -
01661 957 Protected - 4+6 - -
01661 958 Protected - 4+6 - -
01661 959 Protected - 4+6 - -
01661 960 Protected - 4+6 - -
01661 961 Protected - 4+6 - -
01661 962 Protected - 4+6 - -
01661 963 Protected - 4+6 - -
01661 964 Protected - 4+6 - -
01661 965 Protected - 4+6 - -
01661 966 Protected - 4+6 - -
01661 967 Protected - 4+6 - -
01661 968 Protected - 4+6 - -
01661 969 Protected - 4+6 - -
01661 970 Protected - 4+6 - -
01661 971 Protected - 4+6 - -
01661 972 Protected - 4+6 - -
01661 973 Protected - 4+6 - -
01661 974 Protected - 4+6 - -
01661 975 Protected - 4+6 - -
01661 976 Protected - 4+6 - -
01661 977 Protected - 4+6 - -
01661 978 Protected - 4+6 - -
01661 979 Protected - 4+6 - -
01661 980 Protected - 4+6 - -
01661 981 Protected - 4+6 - -
01661 982 Protected - 4+6 - -
01661 983 Protected - 4+6 - -
01661 984 Protected - 4+6 - -
01661 985 Protected - 4+6 - -
01661 986 Protected - 4+6 - -
01661 987 Protected - 4+6 - -
01661 988 Protected - 4+6 - -
01661 989 Protected - 4+6 - -
01661 99 Protected - N/A - -