For the diquark-antidiquark system, a non-relativistic model with relativistic corrections is applied in the sextet-antisextet configuration to determine the mass spectra of all charm tetraquarks. Using Cornell-like potential, the Schrödinger equation for the Charmonium meson is numerically solved to get the fitting parameters. The current study uses parameters derived from charmonium spectra to predict the mass spectra of all charm tetraquarks in the sextet-antisextet configuration, reducing a four-body problem to a two-body problem. The potential decay channels are described using the framework of the quarkonium-like annihilation process.