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The online control panel allows users to blacklist and block incoming calls from certain numbers, international numbers or a range of numbers, for example all numbers starting 0871.

This is ideal for blocking nuisance calls or callers that you don’t want to speak with.

The blacklist enables you to add a list of numbers and comments via your online account to block. The blocked caller would hear a recorded message saying:

Calls are not currently being accepted from this number.

Numbers can be added to or removed from the blacklist instantly online via the control panel or mobile app.

Blacklist Pricing

Blacklist up to 10 numbers – Free

Blacklist up to 50 numbers – £4.99 a month

If you already have telephone numbers from Tamar Telecommunications and would like help with blocking nuisance calls to your numbers, please contact us.

If you don’t already have any telephone numbers from Tamar Telecommunications, we can provide new telephone numbers for any UK town or city, as well as a range of non-geographic numbers.

Click on the right hand menu for details of the different types of numbers we can provide.

Another similar free feature is Anonymous Call Rejection, or ACR for short. This feature blocks all calls made to the number where the callers have witheld their number.

More information is available on the Anonymous Call Rejection page.

What else can I do to stop nuisance calls?

Whilst many people don’t receive nuisance calls, it can be timewasting for those that do.

There is a way to reduce the amount of unsolicited cold calls to your business telephone numbers.

The Telephone Preference Service (TPS) is a free service. It is the official central opt out register on which you can record your preference not to receive unsolicited sales or marketing calls.

For further details and to register your telephone numbers with the Telephone Preference Service, visit the TPS web-site.



Telephone numbers from Tamar Telecommunications are provided with a selection of features for free, as well as additional value-added services designed to further enhance the numbers call management capability.

See more services