AS16649 — IUPR-AS

AS16649 announces 2 IPv4 prefixes covering 65,792 addresses and 0 IPv6 prefixes.

About this network

The handle and the netnames use the same four initials in a different order.

What it's used for

• A university's network. Two IPv4 prefixes announced from Puerto Rico, no IPv6, sixty-five thousand seven hundred and ninety-two addresses, through three observed BGP neighbours.

Notable

• The AS handle is four initials followed by the two letters for an autonomous system.
• Both netnames use those same four letters with the first two swapped, then the word for a network. One adds a single trailing letter.
• That trailing letter is the old address class marker for a block of sixty-five thousand addresses, which is exactly the size of the block carrying it.
• Both blocks are registered to the university itself, so both spellings are the institution's own.
• Six addresses were queried for reverse DNS and none returned a name.

Interesting

• Two orderings of one set of initials is what happens when a long name offers more than one obvious abbreviation and nobody arbitrates between them. Both are correct, and no field in the registry compares them.
• A class marker in a netname is a fossil from an era when block sizes came in three fixed shapes. The size it describes is still right, which is why nobody has had cause to change it.
• Sixty-five thousand addresses and a small block, behind three upstreams, is the ordinary shape of a campus network with an early allocation and a later one.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 164.42.0.0/16
• 192.231.92.0/24

Upstream networks

• AS14638 Liberty Communications of Puerto Rico LLC
• AS18895 Nustream Communications
• AS30526 Neptuno Media, Inc.

Adjacent networks

• AS14638 Liberty Communications of Puerto Rico LLC
• AS18895 Nustream Communications
• AS30526 Neptuno Media, Inc.