Not really. 555 is reserved for directory assistance applications. 888 is listed as US/Canada toll free. 999 is "Often used by carriers to indicate that the area code information is unavailable for CNID, even though the rest of the number is present."
I found only one triple for international dialing codes: 222 is Mauritania.
Some telemarketers leave 000-000-0000 on my caller ID. I think they are trying to avoid the do-not-call lists.