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Users of popular Internet applications specify service end points using human-friendly domain names. The Domain Name Service (DNS) resolves these domain names into IP addresses and the underlying communication subsystem uses only the IP addresses to deliver data. This setup has worked well so far. However, today, the unallocated IPv4 address space is scant and the DNS infrastructure is vulnerable to many types of financial and security attacks, including Denial-of-Service (DoS) and phishing.
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