Saturday's game at Blackpool was postponed on Friday because of a frozen pitch.
The two clubs and the EFL agreed for an early pitch inspection to prevent any unnecessary journeys for supporters.
No new date for the game has yet been arranged, but those supporters who had purchased tickets for the game are advised to keep them safe until a new date is known.
At that point, details of the refund procedure for any supporters who are unable to make the new date will be announced.
The club will retain any tickets purchased online and not collected in accordance with the above procedure.
The club store and ticket office at Sixfields will reopen at 10am on Monday, with tickets available online via ntfcdirect.co.uk and merchandise via ntfc.clubstore.co.uk