| Subject | English | Italian |
| comp., MS | Blocked Top-Level Domain List | elenco domini di primo livello bloccati (A list that allows you to block top-level domain names. Blocking country/region top-level domains allows you to filter unwanted e-mail messages you receive from specific countries or regions) |
| commun. | country code Top Level Domain | dominio di primo livello geografico |
| commun., IT, tech. | country-code Top-Level Domain | dominio di primo livello geografico |
| gen. | descriptive top-level specification | specifica descrittiva ad alto livello |
| commun. | .eu Top Level Domain | dominio di primo livello .eu |
| commun., IT | generic Top-Level Domain | dominio di primo livello generico |
| commun., IT | Generic Top-Level Domain | dominio di primo livello generico |
| transp., construct. | normal top water level | livello massimo della normale regolazione |
| IT, dat.proc. | top level proforma | proforma di alto livello |
| transp., construct. | top water level | livello massimo della normale regolazione |
| life.sc. | top water level | livello massimo di ritenuta |
| commun., IT | top-level domain | dominio di primo livello |
| comp., MS | top-level domain | dominio di primo livello, TLD (In the Internet and other networks, the highest subdivision of a domain name in a network address, which identifies the type of entity owning the address (for example, .com for commercial users or .edu for educational institutions) or the geographical location of the address (for example, .fr for France or .sg for Singapore). The domain is the last part of the address (for example, www.acm.org)) |
| IT | top-level domain name registry | registro dei nomi dei domini di primo livello |
| comp., MS | top-level folder | cartella di primo livello (The uppermost directory on a computer, partition or volume) |
| corp.gov. | top-level management | alta dirigenza |
| comp., MS | top-level property grid | griglia di proprietà di livello superiore (A property grid that only displays the properties that appear in the sentence-level view of an action) |
| comp., MS | top-level site | sito principale (A Web site at the top of the hierarchy in a site collection, from which you can manage site collection features) |
| gen. | top-level specification | specifica ad alto livello |
| comp., MS | top-level Web site | sito Web principale (The default, top-level site provided by a Web server or virtual server. To gain access to the top-level Web site, you supply the URL of the server without specifying a page name or subsite) |