AS15099 — MONROE-COUNTY-MI-PUBLIC-ASN

AS15099 announces 1 IPv4 prefixes covering 256 addresses and 0 IPv6 prefixes.

About this network

The longest AS handle in this stretch, and it explains itself.

What it's used for

• A county government's network. One IPv4 /24 announced from the United States, no IPv6, and two observed BGP neighbours.

Notable

• The AS handle is MONROE-COUNTY-MI-PUBLIC-ASN: the organisation, a two-letter state abbreviation, the word PUBLIC and the word ASN all inside a field that only has to be unique.
• The announced block is not the county's. It carries the netname CCCH3-4 and is registered to a cable carrier.
• That netname turns up on unrelated holders elsewhere in this corpus, so it is a bulk category the carrier applies rather than anything specific to this customer.
• Three addresses were queried for reverse DNS and none returned a name.

Interesting

• A government running its own AS number over a carrier's addresses is the ordinary arrangement for a body this size. The county controls the routing so it can change providers without renumbering, and the addresses stay with whoever it buys transit from today.
• Spelling ASN inside an AS handle is a habit several holders in this range share. It is redundant in the field it sits in and it is the kind of redundancy that survives forever, because nobody edits a handle once systems reference it.
• The word PUBLIC implies a matching private network that has no reason to appear in routing at all.

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

Announced prefixes

• 50.227.122.0/24

Upstream networks

• AS237 Merit Network Inc.
• AS33668 Comcast Cable Communications, LLC

Adjacent networks

• AS237 Merit Network Inc.
• AS33668 Comcast Cable Communications, LLC