.tt is the internet country code top-level domain (ccTLD) in the Domain Name System of the Internet for Trinidad and Tobago.

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.tt

Introduced	September 3, 1991; 32 years ago (1991-09-03)
TLD type	Country code top-level domain
Status	Active
Registry	Trinidad and Tobago Network Information Centre (TTNIC)
Sponsor	University of the West Indies (Faculty of Engineering)
Intended use	Entities connected with  Trinidad and Tobago
Actual use	Used largely in Trinidad and Tobago, with a scattering of other use including free third-level subdomains offered by outside vendor
Registration restrictions	None (except under .gov.tt, .mil.tt and .edu.tt)
Structure	Registrations permitted directly at second level or at third level beneath various labels
Documents	Terms and conditions
Dispute policies	UDRP
Registry website	TTNIC

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The Trinidad and Tobago Network Information Centre (TTNIC) allows registrations under tt for second-level domains, and for third-level domains under the following domains: co.tt, com.tt, org.tt, net.tt, biz.tt, info.tt, pro.tt, int.tt, coop.tt, jobs.tt, mobi.tt, travel.tt, museum.tt, aero.tt, tel.tt and name.tt.^[1] Registration under the above domains is unrestricted and the registry does not require applicants to have a physical presence in Trinidad and Tobago. However, registrants with a foreign address are charged double.^[2]

In addition, there is mil.tt, restricted to entities in the Military of Trinidad and Tobago, edu.tt is a registry for educational institutions in Trinidad and Tobago,^[3] and gov.tt reserved for agencies of the government.

Domain hacks using .tt include db.tt, ift.tt and mi.tt, URL shorteners used for Dropbox, IFTTT and the 2012 U.S. presidential campaign of Mitt Romney,^[4] respectively.

• Internet in Trinidad and Tobago