This page contains information about which telephone companies the various 03307 numbers are allocated to.
| First Digits | Status | Communications Provider | Change |
|---|---|---|---|
| 0330 700 | Allocated | Swiftnet Ltd | 09/2007 |
| 0330 701 | Free | - | - |
| 0330 702 | Free | - | - |
| 0330 703 | Free | - | - |
| 0330 704 | Free | - | - |
| 0330 705 | Free | - | - |
| 0330 706 | Free | - | - |
| 0330 707 | Allocated | InTouch Communication Services Limited | 07/2012 |
| 0330 708 | Free | - | - |
| 0330 709 | Free | - | - |
| 0330 710 | Free | - | - |
| 0330 711 | Free | - | - |
| 0330 712 | Free | - | - |
| 0330 713 | Free | - | - |
| 0330 714 | Free | - | - |
| 0330 715 | Free | - | - |
| 0330 716 | Free | - | - |
| 0330 717 | Free | - | - |
| 0330 718 | Free | - | - |
| 0330 719 | Free | - | - |
| 0330 720 | Free | - | - |
| 0330 721 | Free | - | - |
| 0330 722 | Free | - | - |
| 0330 723 | Free | - | - |
| 0330 724 | Free | - | - |
| 0330 725 | Free | - | - |
| 0330 726 | Allocated | TeleWare PLC | 10/2009 |
| 0330 727 | Free | - | - |
| 0330 728 | Free | - | - |
| 0330 729 | Free | - | - |
| 0330 730 | Free | - | - |
| 0330 731 | Free | - | - |
| 0330 732 | Free | - | - |
| 0330 733 | Allocated | Vortex Telecom Ltd | 11/2008 |
| 0330 734 | Free | - | - |
| 0330 735 | Free | - | - |
| 0330 736 | Free | - | - |
| 0330 737 | Free | - | - |
| 0330 738 | Free | - | - |
| 0330 739 | Free | - | - |
| 0330 740 | Free | - | - |
| 0330 741 | Free | - | - |
| 0330 742 | Free | - | - |
| 0330 743 | Free | - | - |
| 0330 744 | Free | - | - |
| 0330 745 | Free | - | - |
| 0330 746 | Free | - | - |
| 0330 747 | Free | - | - |
| 0330 748 | Free | - | - |
| 0330 749 | Free | - | - |
| 0330 750 | Free | - | - |
| 0330 751 | Free | - | - |
| 0330 752 | Free | - | - |
| 0330 753 | Free | - | - |
| 0330 754 | Free | - | - |
| 0330 755 | Free | - | - |
| 0330 756 | Free | - | - |
| 0330 757 | Free | - | - |
| 0330 758 | Free | - | - |
| 0330 759 | Free | - | - |
| 0330 760 | Free | - | - |
| 0330 761 | Free | - | - |
| 0330 762 | Free | - | - |
| 0330 763 | Free | - | - |
| 0330 764 | Free | - | - |
| 0330 765 | Free | - | - |
| 0330 766 | Allocated | Recruitment 4U Limited | 06/2012 |
| 0330 767 | Free | - | - |
| 0330 768 | Free | - | - |
| 0330 769 | Free | - | - |
| 0330 770 | Free | - | - |
| 0330 771 | Free | - | - |
| 0330 772 | Free | - | - |
| 0330 773 | Free | - | - |
| 0330 774 | Free | - | - |
| 0330 775 | Free | - | - |
| 0330 776 | Free | - | - |
| 0330 777 | Allocated | Eircom UK Ltd | 06/2007 |
| 0330 778 | Free | - | - |
| 0330 779 | Free | - | - |
| 0330 780 | Free | - | - |
| 0330 781 | Free | - | - |
| 0330 782 | Free | - | - |
| 0330 783 | Free | - | - |
| 0330 784 | Free | - | - |
| 0330 785 | Free | - | - |
| 0330 786 | Free | - | - |
| 0330 787 | Free | - | - |
| 0330 788 | Allocated | TeleMagic Ltd | 07/2013 |
| 0330 789 | Free | - | - |
| 0330 790 | Free | - | - |
| 0330 791 | Free | - | - |
| 0330 792 | Free | - | - |
| 0330 793 | Free | - | - |
| 0330 794 | Free | - | - |
| 0330 795 | Free | - | - |
| 0330 796 | Free | - | - |
| 0330 797 | Free | - | - |
| 0330 798 | Free | - | - |
| 0330 799 | Free | - | - |