| Subject | English | Spanish |
| org.name. | Second High-Level Forum on Harmonization and Alignment of Aid Effectiveness | Foro de Alto Nivel sobre la Eficacia de la Ayuda al Desarrollo armonización, acción común, resultados |
| commun., IT | Second Level Domain | dominio de segundo nivel |
| commun. | second level domain | dominio de segundo nivel |
| gen. | second-level autonomous community | Comunidad Autónoma de vía lenta |
| gen. | second-level autonomous community | Comunidad Autónoma de segundo grado |
| comp., MS | second-level domain | dominio de segundo nivel (A domain name that is rooted hierarchically at the second tier of the domain namespace directly beneath the top-level domain name such as .com and .org. When DNS is used on the Internet, second-level domains are names such as microsoft.com that are registered and delegated to individual organizations and businesses according to their top-level classification. The organization then assumes further responsibility for parenting management and growth of its name into additional subdomains) |