do you require any documentation from their other provider that they are allowed to re-announce those addresses? The issue isn't whether we should re-announce, but what documentation we should require before doing so.
uh, we're kinda on a first name basis with our peers at the other tier ones. formality is usually not needed. when one of their less clued/connected departments gets involved, we usually count on the clueful to handle their own organization's internal issues. most folk really do understand how the game is played. probably verio stresses it more than most, due to much address space still swipped into the name of the isps we acquired and there is major administrivia (legal sale documents and all) to update it. but most of our friends know that too. occasionally we hit an peer's admin person who's been kept in a dark room for some years. again we could on the clueful to pass it on. randy