Network foot printing is an organized collection of information about a targeted network environment. the attackers, before attacks a network, collect the information such as the ip address of the targeted organization is called:

Reconnaissance

Explanation:

In networking a term 'reconnaissance' is used in term of network security. It is the type of attack on network in which attackers / hackers collect the information about targeted network. The information that may access by attackers is port No. and IP addresses.  The purpose of this attack is to gather the information about vulnerability.

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