In IANA root
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All TLDs / .co / Is .co legit?
.co is safe to use for websites and email. Legitimacy scams are about the site, not the extension — but .co itself has a normal reputation with spam filters and browsers.
.co is technically a country-code TLD, but Google's own documentation lists it among the ccTLDs treated as generic — it is not geo-restricted and ranks globally like any gTLD.
Source: IANA root zone database, checked October 18, 2026.
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