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128.100.112.0/21 block of IP addresses granted by a company. Company said this block of addresses must be divided into four subnetworks that have each at least 500 IP addresses.

How do I get 500 addresses from the IP block?

jkrhweuyi
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    [This two-part answer](https://networkengineering.stackexchange.com/a/53994/8499) has a specific section about that. – Ron Maupin Dec 19 '21 at 19:15

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Looks like your informations is not so correct, see it: https://ipinfo.io/AS239/128.100.0.0/16

You can scrap this website. Or WHOIS records using WHOIS requests.

Yevgeniy Kosmak
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