HLR lookup allows you to perform network search for one or more numbers at the same time. With this service you can check if a number is valid and the network that this number belongs to. More precisely, when you are not sure of the validity of your marketing list, you can perform an HLR lookup and based on the results to delete invalid and not active numbers from it.

The process is very easy. Type the number, contact name or group that you want to check in the field “Insert recipients/groups”. You can type the phone number and press Enter. Also if you want to perform HLR lookup to a contact from your account’s address book, you just have to type the first letters of it’s name. You can also choose a contact group or all of your contacts or you can upload contact files to perform HLR lookup.