A "restricted number" refers to a phone call, typically from someone who chooses to block their Caller ID. This means that the person calling does not want their phone number to be visible to the recipient of the call. Full definition
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The number of Gold and Enhanced listings in each state is limited, however we don't restrict the number of basic listings. (mortgage-x.com)
For best results, switch entirely to a properly balanced raw or cooked diet or severely restrict the number of people food rewards you permit in a day. (petfriendlyhouse.com)