All TLDs / .ac
What is .ac?
Registry operator: Internet Computer Bureau Limited — per the IANA root database.
Source: IANA root zone database, checked August 23, 2026.
Is .ac a real domain extension?
Yes — .ac is a real top-level domain. It's present in the official IANA DNS root zone, which is the authoritative list of every live TLD on the internet.
Who runs .ac?
.ac is operated by Internet Computer Bureau Limited, the registry responsible for Ascension Island, per the IANA root database.
What is .ac used for?
.ac is the extension tied to Ascension Island. Many country codes are also used generically for branding when the letters spell something useful.
Can anyone register a .ac domain?
Generally yes — .ac is open through accredited registrars, though some country registries require local presence or ID. Availability of a specific name depends on whether it's already taken.
.ac and Ascension Island
.ac is the country-code top-level domain assigned to Ascension Island, administered by the registry Internet Computer Bureau Limited.
The .ac top-level domain is the Internet country code (ccTLD) for Saint Helena, Ascension and Tristan da Cunha, used primarily for Ascension Island. It is administered by NIC.AC, a subsidiary of the Afilias-owned company Internet Computer Bureau.
Source: Wikipedia — .ac (CC BY-SA)
Where to buy .ac
Renewal trap: .ac costs $26.06 in year one but $46.65/yr to renew — 1.8× the intro price. Budget for the renewal, not the promo. Full Renewal-Trap Index
| Registrar | First year | Renews | |
|---|---|---|---|
| Namecheap Sponsored | Live price unavailable — confirm at the registrar. | Go → | |
| Dynadot Sponsored | Live price unavailable — confirm at the registrar. | Go → | |
| Porkbun Trust pick cheapest | $26.06 promo | $46.65 | Go → |
| Cloudflare Trust pick at-cost | $45.00 | $45.00 | Go → |
Porkbun & Cloudflare prices in USD, pulled from their daily feeds (checked 2026-08-30). Cloudflare sells at wholesale cost but requires using Cloudflare’s nameservers.
Some links are affiliate links. Prices are set by the registrar and can change — always confirm at checkout.
Check if you can register a .ac domain
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