Definition of "routable" []

• Able to be routed (adjective)

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• "Running my own mail server requires me to have a routable IP address."
• "Even before their communications blackout, Egypt really was a small part of the Internet in absolute terms, just a few thousand routable networks out of nearly 400,000 making up the global IPv4 address space."
• "For example, Chinanet, among the nation's largest ISPs, has about 92 million routable Internet addresses, and roughly 950,000 -- or about 1 percent of those addresses -- appear to be sickened with Conficker."