The following models support DDNS:
RLC-410, RLC-410-5MP, RLC-410S, RLC-411, RLC-411-5MP, RLC-411S, RLC-411S-5MP, RLC-420, RLC-420-5MP, RLC-422-4MP, RLC-422-5MP, RLC-423, RLC-423S, RLC-511, RLC-520, RLC-522, RLC-410W, RLC-410W-5MP, RLC-410WS, RLC-411WS, RLC-411WS-5MP, RLC-422W, RLC-423WS, RLC-511W, RLC-422W-5MP, RLC-510A, RLC-520A, RLC-810A, RLC-811A, RLC-812A, RLC-820A, RLC-822A, RLC-823A, RLC-823A 16X, RLC-824A, RLC-830A, RLC-833A, RLC-842A, RLC-81MA, RLC-1010A, RLC-1020A, RLC-1210A, RLC-1212A, RLC-1220A, RLC-1224A, RLC-510WA, RLC-511WA, RLC-523WA, RLC-542WA, B400, B500, B800, B1200, D500, D800, D1200, C1, C1 Pro, C2, C2 Pro, E1, E1 Pro, E1 Zoom, E1 Outdoor series, Reolink Lumus, Reolink Duo WiFi, Duo PoE, Duo 2 WiFi, Duo 2 PoE, Duo Floodlight WiFi, Duo Floodlight PoE, TrackMix WiFi, TrackMix PoE, Reolink Video Doorbell WiFi, Reolink Video Doorbell PoE, RLN36, RLN16-410, RLN8-410, RLN8-410-E.