US IP Address List A Note on the Impossibility

NOTE about US IP Address List

The Issue with Banning IP Addresses in the U.S.

Listing all US IP addresses sounds like an easy task but that is not the case. The internet is an ever-changing web and IP addresses are consistently being assigned/reassigned. This makes a static list of any sort impossible.

The Challenge of Compiling an Exhaustive List

Dynamic IP Address Allocation: Most of the internet service providers (ISPS) would assign the IP address of a user dynamically. This means that a device could actually have a different IP address each time it connects to the internet.

• Private IP: A large portion of IPs are private, meaning they are inaccessible from the public internet. They are used in local area networks, such as home networks and corporate intranets.

• Always Growing: The number of devices connected to the internet is increasing continually which also results in a continuous requirement for new Internet Protocol (IP) addresses.

• IPv4 Conservation: In order to manage the limited pool of IPv4, methods such as Network Address Translation (NAT) allow for many private IP addresses to be connected through a device with a public IP address.

Where to Get IP Address Info

There are too many services to provide a comprehensive list, but the following provides IP address information:

Databases of IP geolocation: these databases supply information on the approximate geographic location (country, area, city) of the IP address. MaxMind, IPInfoDB and IP2Location are some of the popular ones.

• Who is Lookup: A tool that allows you to query a domain name or IP address. It can tell you about the organization that owns that IP address range.

• Network scanners: These tools will allow the user to scan any range of IP addresses in order to find what devices are active as well as information on these devices.

IP Address Ranges

• Often, it is more convenient to consider ranges of IP address space than individual IP addresses. They are defined based on a notation called Classless Inter-Domain Routing CIDR. CIDR notation represents a network address with a prefix length to determine how many IPs are included in a range.

• CIDR notation specifies a network specified as an IP address that contains 256 IP addresses, such as 192.168.1.0/24 where the.0/24 indicates all valid hosts within that backbone where backbone is from.0 to.255

So there you have it

It is impossible to have a complete lists of all US IP addresses but understanding the building blocks of how IP addresses work, CIDR and IP geolocation will get you quite far in making sense of the internet. Follow the above-mentioned tools and pattern for details related to IP addresses of particular organizations, networks or places that are being used in any form.