1. For the purposes of this Directive, the following entities shall be considered to be essential entities:

(a) entities of a type referred to in Annex I which exceed the ceilings for medium-sized enterprises provided for in Article 2(1) of the Annex to Recommendation 2003/361/EC;

(b) qualified trust service providers and top-level domain name registries as well as DNS service providers, regardless of their size;

(c) providers of public electronic communications networks or of publicly available electronic communications services which qualify as medium-sized enterprises under Article 2 of the Annex to Recommendation 2003/361/EC;

(d) public administration entities referred to in Article 2(2), point (f)(i);

(e) any other entities of a type referred to in Annex I or II that are identified by a Member State as essential entities pursuant to Article 2(2), points (b) to (e);