.ca is the Internet country code top-level domain (ccTLD) for Canada. The domain name registry that operates it is the Canadian Internet Registration Authority (CIRA).
.uk is the Internet country code top-level domain (ccTLD) for the United Kingdom. It was first registered in July 1985, seven months after the original generic top-level domains such as .com and the first country code after .us.
.ba is the Internet country code top-level domain (ccTLD) for Bosnia and Herzegovina. It is administered by the University Teleinformation Center.
.br is the Internet country code top-level domain (ccTLD) for Brazil. It was administered by the Brazilian Internet Steering Committee until 2005 when it started being administered by Brazilian Network Information Center. A local contact is required for any registration. Registrations of domain names with Portuguese characters are also accepted.
.sa is the Latin alphabet Internet country code top-level domain (ccTLD) of Saudi Arabia. Domains of this type can be registered through SaudiNIC, a department of the Communications and Information Technology Commission. The Arabic alphabet ccTLD of Saudi Arabia is السعودية.
.th is the Internet country code top-level domain (ccTLD) for Thailand.
.il is the Internet country code top-level domain (ccTLD) of Israel, administered by the Israel Internet Association and managed by NIC - ISRAEL, which hosts the DNS root server and manages the Israeli Internet Exchange, that supports IPv4 and IPv6.
.sg is the Internet country code top-level domain (ccTLD) for Singapore. It was first registered in September 1988. It is administered by the Singapore Network Information Centre. Registrations are processed via accredited registrars.
.co is the Internet country code top-level domain (ccTLD) assigned to Colombia.
.dz is the country code top-level domain (ccTLD) for Algeria.
.id is the Internet country code top-level domain (ccTLD) for Indonesia. Since 2007, it is managed by the Indonesian Internet Domain Name Administrator, based on regulation set by Decree of Minister of Communication and Information Technology.
.mk is the Internet country code top-level domain (ccTLD) for Republic of North Macedonia. It is administered by the Macedonian Academic Research Network (MARnet).
.mx is the Internet country code top-level domain (ccTLD) for Mexico, which in 2009 was re-opened to new registrations by NIC México. In 2009, the .mx ccTLD was rolled out in three steps:
.gt is the Internet country code top-level domain (ccTLD) for Guatemala. Registrations are taken directly at the second level under .gt, as well as third level under some second level labels.
.ke is the Internet country code top-level domain (ccTLD) for Kenya.
.ky is the Internet country code top-level domain (ccTLD) for the Cayman Islands. The code was chosen as other possible options had already been allocated. Registration was limited to residents and registered companies in the Cayman Islands with a local address, but this restriction was removed in September 2015. The Cayman Islands also has the international three-letter code CYM and has won a bid to be awarded the .cym domain in a future expansion of the top-level domain space.
.mr is the Internet country code top-level domain (ccTLD) for Mauritania.
.tt is the internet country code top-level domain (ccTLD) in the Domain Name System of the Internet for Trinidad and Tobago.
.tz is the Internet country code top-level domain for Tanzania. Historically and due to poor Internet Infrastructure, most top-level domains in Africa were and some are still being technically managed by foreign experts. Through a consultative process, Tanzania Network information Centre (tzNIC), a not-for-profit company was established and registered to administer and manage the operations of the Tanzania country code top-level domain. tzNIC is a limited company with two founding members – the Tanzania Communication Regulatory Authority and the Tanzania Internet Service Provider Association.
.ss is the designated country code top-level domain (ccTLD) for South Sudan in the Domain Name System of the Internet. It is derived from the ISO 3166-1 alpha-2 code for South Sudan, which is SS. According to CIO East Africa, the TLD was allocated on 10 August 2011 following the country's declaration of independence from Sudan. The TLD was registered on 31 August 2011, but not added to the DNS root zone and was thus not operational. It was approved at the ICANN Board meeting on 27 January 2019 and was added to the DNS root zone on 2 February 2019.
Malta 
