What matters is the operators agree on a domain name for
Infrastructure ENUM. This might as well be e164.arpa since (a) it's
vendor neutral; (b) already an agreed IETF standard; (c) not
controlled by any nation. It's hard to see how any other choice of
domain name could be better (technically or politically). And it
prevents VoIP/SIP applications from getting schizophrenia from
figuring out which domain name they should use based on what network
they're running in today.
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