In several updates since 1963, CODEN were registered and published in the CODEN for Periodical Titles by ASTM, counting to about 128,000 at the end of 1974.
Dalam beberapa update sejak 1963, CODEN telah terdaftar dan dipublikasikan dalam CODEN for Periodical Titles oleh ASTM, terhitung sekitar 128,000 pada akhir 1974.