Learn how to identify public and private IP address ranges.
Table of Contents
Question
Which of the following IP address ranges is routable over the internet?
A. 10.0.0.0 to 10.255.255.255
B. 215.11.0.0 to 215.11.255.255
C. 172.16.0.0 to 172.31.255.255
D. 192.168.0.1 to 192.168.255.255
Answer
B. 215.11.0.0 to 215.11.255.255
Explanation
This address range is routable over the internet.
A, C, and D are incorrect because this range is not routable over the internet.
The correct answer is B. 215.11.0.0 to 215.11.255.255.
The other three options are private IP address ranges that are not routable over the internet. They are reserved for internal use within a network and can only be accessed by devices within the same network. Private IP addresses are defined by RFC 1918 and include the following ranges:
- 10.0.0.0 to 10.255.255.255 (Class A)
- 172.16.0.0 to 172.31.255.255 (Class B)
- 192.168.0.0 to 192.168.255.255 (Class C)
Public IP addresses, on the other hand, are globally unique and can be routed over the internet. They are assigned by the Internet Assigned Numbers Authority (IANA) and follow the IPv4 or IPv6 standards. Public IP addresses can be either static or dynamic, depending on how they are allocated by the Internet Service Provider (ISP).
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