Registry.MX
A NIC Mexico division that manages the .MX territorial domain name (ccTLD, country code Top Level Domain); which is a two letter code assigned to each country, according to ISO 3166, in this case, Mexico.
Registry .MX primary responsibilites are providing information and domain name registration services, as well as maintaining the database. Registry .MX also provides support to Accredited Registrars.
.LAT
A NIC Mexico division that manages the technological and commercial operation of the .LAT domain name.
.LAT is a collaborative initiative between NIC Mexico and The Federation of Latin America and the Caribbean for Internet and Electronic Commerce (eCOM-LAC) with headquarters in Uruguay.
NIC Mexico manages the DNS database and infrastructure for the .LAT domain names, following international standards of security and high availability. .LAT also provides support to Accredited Registrars.
IAR México
A NIC Mexico division that in close collaboration with LACNIC, administers the assignment of Internet Resources (IPV4 addresses, IPV6 and ASNs) for entities in Mexico.