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#
Authors:
James F. Kurose, Keith W. Ross
Chapter:
The Network Layer
Exercise:
Problems
Question:18 | ISBN:9780132856201 | Edition: 6

Question

Use the whois service at the American Registry for Internet Numbers (http://www.arin.net/whois) to determine the IP address blocks for three universities. Can the whois services be used to determine with certainty the geographical location of a specific IP address? Use www.maxmind.com to determine the locations of the Web servers at each of these universities.

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Answer

Let us assume the three universities:  

  1. "Stanford University",
  2. "New York University" and
  3. "Chicago University"

Consider the website "www.maxmind.com" and "http://www.arin.net/whois" to find the above university IP addresses.

The specific IP address of Stanford University: 140.142.0.0-140.142.255.255

It is denoted by the notation: 140.142.0.0/16.

The specific IP address of New York University: 128.238.0.0 -128.238.255.255

It is denoted by the notation:128.238.0.0/16

The specific IP address of Chicago University: 171.64.0.0-171.67.255.255

It is denoted by the notation: 128.64.0.0/24

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