The List of Authorized Racket Coverings (LARC) is now updated on a quarterly basis by the International Table Tennis Federation (ITTF) and lists all the approved racket coverings.

There have been a number of questions from players as to whether a bat with a racket covering that does not have a number shown on the rubber is legal or not.

The answer is that as long as the rubber is listed within the current LARC it is legal whether it has an ITTF number or not.
The LARC has many rubbers still listed without a unique ITTF number.
ITTF regulations mandate that the rubber must display the ITTF logo to be legal.

Over time all rubbers will have a unique ITTF number.  The number serves as an identification code for each authorized covering. The LARC includes some 1,600 different rubbers from different brands, the unique ITTF number helps to more easily find the rubber within the LARC.

Most players would now be aware that table tennis rubbers now come in different colors: blue, green, pink and purple as well as the standard red and black.
However, it is still necessary to have a black rubber on at least one side of the bat.

Click the link below to view the current LARC:
LARC