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AT&T is an ISP, with millions of customers. I'd expect them to need a /8, or more.
by SAI_Peregrinus 7y ago
AT&T is an ISP, with millions of customers. I'd expect them to need a /8, or more.
- _-david-_ 7y agoApple and USPS are not ISPs. It doesn't seem like they need a /8 though.
- kitteh 7y agoComically when Apple would setup a store they'd ask their isps to provide an allocation rather than dip into their allocation.
- jandrese 7y agoFrom a global routing perspective this makes sense. Otherwise every store has to advertise its netblock on BGP. Not impossible, but it bloats the routing table unnecessarily. Better for Apple to keep those addresses on its campus and let the stores connect like regular Internet endpoints. Even better would be for Apple to return most of those addresses and only use a handful of /16s for its hosted services like any other business and switch the internal nets to RFC1918.
- cornishpixels 7y agoAT&T (the ISP's) allocations are to AT&T Corp, not AT&T Services.
- icedchai 7y agoAT&T's 12/8 is used for end-user address assignments by AT&T Services. See https://bgp.he.net/AS7018#_prefixes https://bgp.he.net/AS7018#_prefixes for their announcements.
- kitteh 7y agoMost of their broadband subs are from legacy SBC (ameritech, swbell, nvbell, pacbell, snet). They got all their allocations separately. None of them came out of 12/8 or 32/8 traditionally.