| Subject | English | Japanese |
| comp., MS | Blocked Top-Level Domain List | ブロックするトップレベル ドメイン リスト (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) |
| comp., MS | top-level domain | トップレベル ドメイン (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)) |
| comp. | n top-level domain | 第一レベルドメイン |
| comp., net. | top-level domain name | トップレベルドメイン名 |