In the US, insults are not something for which you can be prosecuted. Calling someone a son of a bitch is not defamatory. No one believes you are really the child of a dog. So that is an opinion. Defamation requires a false factual statement. Truth is a complete defense.
What is Public Key Infrastructure (PKI)? Public Key Infrastructure (PKI) is a set of hardware, software, people, policies, and procedures needed to create, manage, distribute, use, store, and revoke digital certificates. In cryptography, a PKI is an arrangement that binds public keys with respective user identities by means of a certificate authority (CA). Wikipedia.org
.pk. .pk is the designated Internet country code top-level domain (ccTLD) for Pakistan. PKNIC is the only organization endorsed by the Government of Pakistan to undertake the administration of 'pk' domain names. PKNIC is a non-profit making, non-statutory, member-based corporation established in June 1992.