Euclidean normalized radio-source number counts obtained by fitting with the Markov chain Monte Carlo algorithm, and the total radio luminosity function (LF) from Novak et al. (2018) using different evolving analytical LFs for AGN hosts (red line) and SF galaxies (blue line). The shaded areas encompass the 3σ errors from the χ² fits performed on individual populations (for further details, see Novak et al. 2018). Gray circles are the number counts from Galluzzi et al. (2025) obtained from a compilation of radio observations with different instruments (e.g., VLA 1−3 GHz, ATCA, GMRT, LOFAR, MeerKAT, etc.), without any distinction between AGNs or SF. Red and black circles show the number counts from the VLBA CANDELS GOODS-North Survey (Deane et al. 2024) and VLBA 1.4 GHz COSMOS (Herrera-Ruiz et al. 2018) in the case of radio emission from AGN activity. The red star is the number count of the detections from the AGN-sCAN survey presented in this work. The gray arrow points toward the regime below our sensitivity limit, from which the number counts extrapolated from the red curve of Novak et al. (2018) of the 42 brightest AGN were extracted, in order to constrain upper limits on our results (see text in Sect. 7.1 for further details).