North American Network Operators Group|
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Re: Where's 18.104.22.168 ?
Chris Bradley wrote: >Richard Parker wrote: > >> John R Levine wrote >> >Where's 22.214.171.124 ? >> > >> >Got a spam advertising a web page there, ARIN claims it's not allocated >> >although all the space around it is. It routes through Tierranet. > > > >> Perhaps ARIN has reserved the entire /19 for TierraNet, but only >> actually allocated the lower /20 to them? Perhaps TierraNet is >> announcing their /20 as a /19 to get past Sprint's route filters? > >ARIN policy for initial allocations to ISPs declares that a provider will be >allowed to temporarily announce a /19, when they have been allocated a /20. Well...that explains why they're announcing a /19 when they've been allocated a /20, but it leaves the question "Why do they have machines with addresses in the top portion of the /19 announcement that are not in the /20 they've been allocated?" -Richard