ISP check 16 april 2021 Technologie Productsnelheid (Mbps) VDSL 21 Mbps / 4 Mbps VDSL 10 Mbps / 2 Mbps ADSL 12 Mbps / 0,992 Mbps ADSL 12 Mbps / 0,97 Mbps, ADSL VDSL 10 Mbps / 2 Mbps, VVDSL Post navigation ISP checkISP check