I don’t recognise a telephone number on my bill

Think you’ve been charged for a call you didn’t make? It’s worth checking the destination of the number again, and asking if someone else in your home has made the call. Especially if the same number has appeared before.

You could also try running a Google search on the number you don't recognise. You may find out whose number it is.

There's a National Numbering Plan in the UK that shows what numbers are used by different types of service. It also gives you an idea of how much it costs to call those numbers. The table below shows the major categories of numbers.

You can get more detailed information about the price of calling from a BT line at www.btcom.ll-digital-sandbx1.bt.com/pricing >

You might save money on calls to international numbers by signing up to one of our international call add-ons.

To check our international telephone call prices and what features are available, go to www.btcom.ll-digital-sandbx1.bt.com/international >

 

Number Use
00 Access for international calls
01 National geographic numbers in the UK
02 National geographic numbers in the UK
03 National non-geographic numbers with calls charged at or below rates for geographic numbers
04 Not used
0500 Numbers that are free to call
055 Corporate numbers
056 Location Independent Electronic Communications – typically VoIP services
06 Not used
070 Personal numbers
076 Radio paging calling
071-075 & 077-079 Mobile telphones
0800 & 0808 National numbers that are free to call
0820 National numbers for Internet for school services
0844 Service numbers that consist of an access charge from BT, plus a service charge set by the company you call
0845 Service numbers that consist of an access charge from BT, plus a service charge set by the company you call
0870 Service numbers that consist of an access charge from BT, plus a service charge set by the company you call
0871 & 0872 Service numbers that consist of an access charge from BT, plus a service charge set by the company you call
090, 091 & 098 Premium Rate Services. Service numbers that consist of an access charge from BT, plus a service charge set by the company you call
100 Operator
112 Emergency assistance
118xxx Directory Enquiries. Service numbers that consist of an access charge from BT, plus a service charge set by the company you call
141 Dialling 141 before you dial a number means that your number will be withheld. This service is called blocking your calling line identity (CLI)
2-8 Not used in the National Number Plan, but may be used for local dialling to geographic numbers and as ‘short codes’ from mobile telephones
999 Emergency assistance

 

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