Using photometric data from the Dark Energy Survey and the Wide-field Infrared Survey Explorer, we estimate photometric redshifts for 105 million galaxies using the nearest-neighbour algorithm. From such a large data base, 151244 clusters of galaxies are identified in the redshift range of 0.1 < z 1. We cross-match these clusters with those in the catalogues identified from the X-ray surveys and the Sunyaev-Zel'dovich (SZ) effect by the Planck, South Pole Telescope and Atacama Cosmology Telescope surveys, and get the redshifts for 45 X-ray clusters and 56 SZ clusters. More than 95 per cent SZ clusters in the sky region have counterparts in our catalogue. We find multiple optical clusters in the line of sight towards about 15 per cent of SZ clusters.

Cone search capability for table J/MNRAS/513/3946/table1 (The clusters of galaxies identified from the DES*unWISE galaxies)

Cone search capability for table J/MNRAS/513/3946/tablea3 (Multiple optical clusters in the line of sight towards 155 SPT clusters and 236 ACT clusters)