You can easily check NT ADSL working status, expiry date very easily. You no longer have to ring NT Customer Care and know those details. There are two ways to know your ADSL Expiry Date.A. OFFLINE via SMSTo know the expiry date of your ADSL service, type ADSLyour_landline_number_with_area_code and send a SMS to 1400. For example;… Continue reading Check NT ADSL Working Status; Offline & Online