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  1. networking - Why is localhost IP 127.0.0.1? - Super User

    Aug 29, 2009 · 99 127 is the last network number in a class A network with a subnet mask of 255.0.0.0. 127.0.0.1 is the first assignable address in the subnet. 127.0.0.0 cannot be used because that would …

  2. Why is my localhost not 127.0.0.1 but ::1, and what notation is that?

    The expected result is that 127.0.0.1 would take precedence over ::1 but that was not the case. As I have learned now, this can be done by adding a prefix policy instead.

  3. What's a loopback-address? I.e. 127.0.0.1 - Super User

    Jun 6, 2015 · What is a loop-back address? 127.0.0.1 is a loop-back address, but what does this even mean? Please be very descriptive and give an example, as I'm having a hard-time understanding this.

  4. What's the difference between 127.0.0.1 and 127.0.0.0

    The difference shown here is that there exists two routes - a general route to any device using 127.x.y.z and a very specific route to host 127.0.0.1 (which is in 127.0.0.0), both of which use the 127.0.0.1 …

  5. windows 7 - How does localhost 127.0.0.1 work? - Super User

    Localhost or 127.0.0.1 is simply a built in 'name' for your local computer. That is, 127.0.0.1 is called a "loopback", because it is merely a pointer that points back to your machine.

  6. What is difference between localhost address 127.0.0.1 and 127.0.1.1

    Apr 6, 2016 · 127.0.0.1 is the loopback address, commonly known as localhost, which is the name that resolves to it by the local hosts file. This file is in different locations depending on the OS, but in most …

  7. What's the difference between 127.0.0.1 and 0.0.0.0?

    Aug 2, 2015 · What is IP address 127.0.0.1? 127.0.0.1 is the loopback Internet protocol (IP) address also referred to as the “localhost.” The address is used to establish an IP connection to the same …

  8. What is the 127.0.0.2 IP address for? - Super User

    Jan 7, 2021 · This is ordinarily implemented using only 127.0.0.1/32 for loopback. As described in [RFC1122], Section 3.2.1.3, addresses within the entire 127.0.0.0/8 block do not legitimately appear …

  9. What is the difference between 127.0.0.1 and non-localhost addresses?

    Aug 18, 2022 · From my point of view, your questions are too different to be grouped in a single question. To answer your main question : the purpose to use 127.0.0.1 instead of a non localhost …

  10. Corporate firewall blocking localhost/127.0.0.1 - Super User

    Mar 23, 2011 · 0 localhost/127.0.0.1 is the loop back address on your machines network card. I don't think it is blocked by a firewall (at least not the corporate filewall) you need to give more information …