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    This is a list of the top 20 highest prices paid for domain names.

    This is a list of countries by IPv4 address allocation, as of 2 April 2012(2012-04-02). It includes 252 areas, including all United Nations member states, plus the Holy See, Kosovo and Taiwan.

    There are 2 (over four billion) IP addresses available in the IPv4 protocol. These addresses are allocated to countries by the Internet Assigned Numbers Authority (IANA) via the Regional Internet Registries (RIRs).

    This is a sortable list of countries by number of Internet users in 2012. Internet users are persons using the Internet in the last 12 months from any device, including mobile phones. Penetration is the percentage of a country's population that are Internet users. Estimates are derived from either household surveys or from Internet subscription data.

    Non-country and disputed areas are shown in italics. All United Nations member states are included, except South Sudan. Taiwan is listed as a sovereign country.

    The following is a list of Internet top-level domains (TLDs). The top-level domain article provides the background information.

    The official list of all top-level domains is maintained by the Internet Assigned Numbers Authority (IANA).

    A number of proposed top-level domains are under consideration by ICANN/IANA.