I wonder where this data comes from? I was hoping I could search around for who returns

    "status",
    "spid",
    "total ported spid",
    "port date",
    "ratecenter",
    "state",
    "lata",
    "clli",
    "creation date",
    "fraud risk",
    "is textable",
    "lrn",
    "spid name",
    "ocn name",
    "ocn",
    "ocn type",
    "nn id",
    "nn description",
    "nn type",
    "cnam",
    "lnp history",
    "number"

But no dice.

Is this US only?

For international numbers I believe you can use

http://internalteli.unlec.com/

It looks like it is, it removes the country code if you provide it.