Other types of resolver are multipole resolvers. Several ISPs have started to deploy DNSSEC-validating DNS recursive resolvers. DoH is used for recursive DNS resolution by DNS resolvers. Internet service providers typically provide caching resolvers for their customers. OpenDNS has released DNSCrypt to protect the channel between OpenDNS's users and its recursive resolvers. Other DOI resolvers and HTTP Proxies include http&colon;//hdl.handle.net, and https&colon;//doi.pangaea.de/. Cloudflare's 1.1.1.1 markets itself as the antithesis to these traditional DNS resolvers. In addition, many home-networking routers implement caching resolvers to improve efficiency in the local network. Multipole resolvers may also be used for monitoring multipole electrical motors. Further uncertainty arises because not all validating resolvers support or use DLV. Resolvers ("DoH clients") must have access to a DoH server hosting a query endpoint. Resolvers produce in-phase and quadrature components which are useful for computation. The later implementations in Joule and E support fully first-class promises and resolvers. Resolvers with four output leads are general sine/cosine computational devices. The CM and LM used the same computer, inertial platform and resolvers.