Adding just slightly more that the Specially reserved extensions like .gov,.edu,.mil and .int are reserved for Government related, Education related, Military related and International Organizations related domains.

e.g Pakpost.gov.pk >>>Pakistan Post is a Government institution ,
Army.mil >>> America's army homepage,
hec.edu.pk >>> Higher education commission website,
who.int/ >>>> World Health Organization~

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نہ تیرا پاکستان ہے , نہ میرا پاکستان ہے , یہ اس کاپاکستان ہے , جو صدرپاکستان ہے