101 Labs - IP Subnetting by Paul Browning

Author:Paul Browning [Browning, Paul]
Language: eng
Format: azw3
Published: 2018-11-12T16:00:00+00:00

So what do we know so far? We know that our subnets go up in increments of 128 and we are trying to reach host 10.10.10.54. Let’s start with 0.0.0, which is the first subnet; our second will be 128.0.0 and so on.

10.0.0.0 Host 10.10.10.54 is in here.

10.128.0.0

Host 10.10.10.54 is in subnet 10.0.0.0. Not that you were asked, but for your information, the first host is 10.0.0.1, the last host is 10.127.255.254, and the broadcast is 10.127.255.255.

Notes:

Two subnets are generated from this subnet mask, but each has over 800,000 hosts. It would never be used on a commercial network.

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