This page contains information about which telephone companies the various 03300 numbers are allocated to.
| First Digits | Status | Communications Provider | Change |
|---|---|---|---|
| 0330 000 | Allocated | Net Solutions Europe Limited | 03/2007 |
| 0330 001 | Allocated | Wavecrest (UK) Ltd | 07/2007 |
| 0330 002 | Allocated | DRD Communications Limited | 07/2009 |
| 0330 003 | Allocated | Atlantic Communications Corp Ltd | 09/2008 |
| 0330 004 | Allocated | Hello Telecom (UK) PLC | 04/2009 |
| 0330 005 | Allocated | Odyssey Systems Ltd | 06/2010 |
| 0330 006 | Allocated | Retail Technology Services Ltd | 11/2008 |
| 0330 007 | Allocated | Rhema Telecom | 03/2007 |
| 0330 008 | Allocated | Node4 Ltd. | 09/2010 |
| 0330 009 | Allocated | One Network Limited | 05/2011 |
| 0330 010 | Allocated | Numbergroup Network Ltd | 10/2010 |
| 0330 011 | Allocated | Rojo Trading Limited | 04/2007 |
| 0330 012 | Allocated | Calltracks Limited | 12/2007 |
| 0330 013 | Allocated | TalkTalk Communications Limited | 11/2011 |
| 0330 014 | Allocated | BT | 08/2013 |
| 0330 015 | Allocated | Cloud9 Communications Limited | 11/2012 |
| 0330 016 | Allocated | Tipicall Limited | 12/2012 |
| 0330 017 | Allocated | Calltracks Limited | 05/2014 |
| 0330 018 | Free | - | - |
| 0330 019 | Free | - | - |
| 0330 020 | Allocated | Citrus Telecommunications Ltd | 07/2007 |
| 0330 021 | Free | - | - |
| 0330 022 | Allocated | TelXL Ltd | 04/2007 |
| 0330 023 | Allocated | Internexus Networks Limited | 04/2013 |
| 0330 024 | Allocated | Gamma Telecom Holdings Ltd | 11/2014 |
| 0330 025 | Free | - | - |
| 0330 026 | Allocated | Wavenet UK Ltd | 10/2010 |
| 0330 027 | Allocated | DIDWW Ireland Limited | 04/2014 |
| 0330 028 | Free | - | - |
| 0330 029 | Free | - | - |
| 0330 030 | Allocated | Talk Numbers Ltd | 01/2012 |
| 0330 031 | Free | - | - |
| 0330 032 | Free | - | - |
| 0330 033 | Allocated | TelNG Limited | 03/2007 |
| 0330 034 | Allocated | Syntec Limited | 06/2012 |
| 0330 035 | Free | - | - |
| 0330 036 | Allocated | Aggregated Telecom Ltd | 03/2009 |
| 0330 037 | Free | - | - |
| 0330 038 | Allocated | IOVOX Limited | 04/2014 |
| 0330 039 | Free | - | - |
| 0330 040 | Allocated | Barritel Limited | 04/2007 |
| 0330 041 | Free | - | - |
| 0330 042 | Free | - | - |
| 0330 043 | Free | - | - |
| 0330 044 | Allocated | YAC Ltd | 03/2007 |
| 0330 045 | Allocated | Six Degrees Unified Comms Limited | 03/2007 |
| 0330 046 | Free | - | - |
| 0330 047 | Free | - | - |
| 0330 048 | Free | - | - |
| 0330 049 | Free | - | - |
| 0330 050 | Allocated | Alphatalk Ltd | 10/2009 |
| 0330 051 | Allocated | Stour Marine Limited | 07/2014 |
| 0330 052 | Free | - | - |
| 0330 053 | Free | - | - |
| 0330 054 | Free | - | - |
| 0330 055 | Allocated | Frontier Systems Ltd | 07/2007 |
| 0330 056 | Free | - | - |
| 0330 057 | Free | - | - |
| 0330 058 | Free | - | - |
| 0330 059 | Free | - | - |
| 0330 060 | Allocated | Level 3 Communications UK Limited | 01/2009 |
| 0330 061 | Allocated | HulloMail Limited | 06/2009 |
| 0330 062 | Allocated | HulloMail Limited | 02/2010 |
| 0330 063 | Allocated | HulloMail Limited | 02/2010 |
| 0330 064 | Allocated | HulloMail Limited | 02/2010 |
| 0330 065 | Allocated | HulloMail Limited | 02/2010 |
| 0330 066 | Allocated | Real Time Telecoms Ltd | 05/2007 |
| 0330 067 | Allocated | HulloMail Limited | 02/2010 |
| 0330 068 | Allocated | HulloMail Limited | 02/2010 |
| 0330 069 | Allocated | HulloMail Limited | 02/2010 |
| 0330 070 | Allocated | HulloMail Limited | 02/2010 |
| 0330 071 | Allocated | HulloMail Limited | 02/2010 |
| 0330 072 | Allocated | HulloMail Limited | 02/2010 |
| 0330 073 | Allocated | HulloMail Limited | 02/2010 |
| 0330 074 | Allocated | HulloMail Limited | 02/2010 |
| 0330 075 | Allocated | HulloMail Limited | 02/2010 |
| 0330 076 | Allocated | HulloMail Limited | 02/2010 |
| 0330 077 | Allocated | X-Pilot Limited | 05/2007 |
| 0330 078 | Allocated | HulloMail Limited | 02/2010 |
| 0330 079 | Allocated | HulloMail Limited | 01/2013 |
| 0330 080 | Allocated | (aq) Limited trading as aql | 08/2007 |
| 0330 081 | Allocated | (aq) Limited trading as aql | 09/2007 |
| 0330 082 | Allocated | HulloMail Limited | 01/2013 |
| 0330 083 | Allocated | HulloMail Limited | 01/2013 |
| 0330 084 | Allocated | HulloMail Limited | 01/2013 |
| 0330 085 | Allocated | HulloMail Limited | 01/2013 |
| 0330 086 | Allocated | HulloMail Limited | 01/2013 |
| 0330 087 | Allocated | HulloMail Limited | 01/2013 |
| 0330 088 | Allocated | Magrathea Telecommunications Limited | 03/2007 |
| 0330 089 | Allocated | IP Phone Solutions Ltd | 10/2013 |
| 0330 090 | Allocated | Minotaur Telecom Limited | 03/2010 |
| 0330 091 | Allocated | HulloMail Limited | 01/2013 |
| 0330 092 | Allocated | HulloMail Limited | 01/2013 |
| 0330 093 | Allocated | HulloMail Limited | 01/2013 |
| 0330 094 | Free | - | - |
| 0330 095 | Free | - | - |
| 0330 096 | Free | - | - |
| 0330 097 | Free | - | - |
| 0330 098 | Free | - | - |
| 0330 099 | Allocated | Sigma Voice Solutions Ltd | 12/2007 |