[#CNetAddr-IsRFC6598]
= xref:CNetAddr.adoc[CNetAddr]::IsRFC6598
:relfileprefix: ../
:mrdocs:

Whether this is an IPv4 ISP‐level NAT (shared) address (100.64.0.0/10).

== Synopsis

Declared in `<netaddress.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
IsRFC6598() const;
----

== Return Value

True when the address is in the IPv4 shared (ISP NAT) range.


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