index.md

---

title: ARPA
slug: Glossary/ARPA
page-type: glossary-definition

---

.arpa (address and routing parameter area) is a {{glossary("TLD","top-level domain")}} used for Internet infrastructure purposes, especially reverse DNS lookup (i.e., find the {{glossary('domain name')}} for a given {{glossary("IP address")}}).

See also

• Official website

• .arpa on Wikipedia