AU commission chairperson Nkosazana Dlamini Zuma hailed its creation as the moment when Africa “got [its] own digital identity”.
The AU says the .africa domain name will “bring the continent together as an internet community”.
Addresses can now reflect a company’s interest in the whole of Africa.
Icann, the body that establishes these addresses known as generic Top-Level Domains, approved the move, after lobbying by the AU.
The campaign was spearheaded by a South African company ZA Central Registry (ZACR), which will now be responsible for registering .africa names.
Other domain names recently created by Icann, include .fun, .phone and .hair.