[Cryptography] Fwd: "Spy Agencies Urge Caution on Phone Deal"

[David Leon Gil]

On Mon, Sep 29, 2014 at 11:51 PM, Jerry Leichter <leichter at lrw.com> wrote:
> a special network/database - oddly never named in the article - that "rout[es] millions of phone calls and text messages in the United States".  Apparently this was a system created back in the late 1990's to implement number portability.

It's the "Number Portability Administration Center": https://www.npac.com/

(The site has many helpful FAQs, like "Why do law enforcement agencies
and PSAPs access the NPAC?")