Where can I get a list of toll phone numbers?

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yellow2014-08-05 10:03:39

Telephony

yellow, 2014-08-05 10:03:39

Where can I get a list of toll phone numbers?

I want to protect corporate Avaya from calling toll numbers.
If there was such a list, and preferably only with prefixes, then I would simply drive it into the configuration to prohibit calls to these numbers.
Does anyone have it?

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