.ac

Country-code domain, run by Internet Computer Bureau Limited. IANA record →

Open to anyone Open to anyone worldwide — no residency, citizenship, local company, or local contact is required to register a .ac domain, so no trustee service is needed. source → checked 2026-07-18

Registrar	First year	Renewal	Transfer	As of
Porkbuncheapest 1st yrcheapest renewal	$26.06	$46.65 1.8×	$46.65	Jul 17, 2026
NameSilo	$34.99	$47.99 1.4×	$46.99	Jul 17, 2026

Cheapest 10-year cost (1 registration + 9 renewals) works out to $445.91 at today's prices. That is the number the first-year sticker hides.