Technology exists that enables providers of electronic communications services to limit the reception of unwanted calls by end-users in different ways, including blocking silent calls and other fraudulent and nuisance calls. Providers of publicly available number-based interpersonal communications services should deploy this technology and protect end-users against nuisance calls and free of charge. Providers should ensure that end-users are aware of the existence of such functionalities, for instance, by publicising the fact on their webpage.