AS16742 Universidad Catolica de Valparaiso

One university holds sixty-five thousand addresses and announces every one of them as a single block.

What it's used for

• A university's network. One IPv4 prefix announced from Chile, no sixth-version space, sixty-five thousand five hundred and thirty-six addresses, through two observed BGP neighbours.

Notable

• The AS handle is the university's four-word name written out in full with spaces, unabbreviated and without the accents the name normally carries.
• The single block's netname is not a name either: it is the range's first and last addresses with spaces around the dash.
• The registrant repeats the same four-word name.
• So all three label fields say the same thing in three formats, and none of them was shortened.
• Three addresses were queried for reverse DNS and none returned a name.

Interesting

• A block of this size given to one institution is an artefact of early allocation, when a university asking for space received a whole range without being asked how many machines it had. Nobody hands out anything like it now, and the holders that have one have kept it.
• Announcing the entire range as one piece rather than splitting it is the simplest possible configuration: no internal boundaries are visible from outside, and any structure inside is the university's own business.
• Two upstreams is the academic pattern: one research network, one commercial path, with the same addresses reachable through either.