1.1.1.1, No-IP, Cisco Umbrella, FreeDNS, DtDNS, YDNS, Storm.dev, Dynu Dynamic DNS, GnuDIP Dynamic DNS, ClouDNS.net, Alviy, nsupdate.info, DNS-O-Matic, IPrekt.com, StaticIP.io, Duiadns, Dynamix, Nubem Dynamic DNS, GSLB.me, Family Friendly DNS, Dyn namn services, hopper.pw, xProDDNS, RaidenDNSD, zzzz.io, sftdyn are some alternatives to Duck DNS.