AS15196 — MDDOT

AS15196 announces 1 IPv4 prefixes covering 65,536 addresses and 0 IPv6 prefixes.

About this network

A whole /16 behind one upstream, with nothing answering in reverse.

What it's used for

• A state transportation agency's network. A single IPv4 170.93.0.0/16 announced from the United States, no IPv6, and one observed BGP neighbour.

Notable

• Sixty-five thousand addresses in one announcement, one of the largest single prefixes in this range.
• The netname, the AS handle and the registrant are all the same agency, with the handle and netname identical five-letter abbreviations.
• One observed neighbour carries the whole allocation.
• Three addresses were queried for reverse DNS and none returned a name.
• The routing history begins in 2008, long after the block was allocated.

Interesting

• A state agency holding a full legacy allocation is a survival of the era when public bodies asked for space and received it in blocks this size. It is worth a great deal now, and the agency is very unlikely to be using more than a fraction of it.
• Everything about the record is consistent, which is unusual, and it comes from a single organisation having filled in every field at once. Consistency here is a sign of a network that has never changed hands.
• A transportation department's network reaches traffic signals, variable message signs and roadside equipment. One upstream for all of it, and nothing answering in reverse to say which address does what, leaves a very quiet public record for infrastructure that is anything but.

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

Announced prefixes

• 170.93.0.0/16

Upstream networks

• AS6059 University System of Maryland

Adjacent networks

• AS6059 University System of Maryland