AS12074 — ITSC

AS12074 announces 3 IPv4 prefixes covering 768 addresses and 0 IPv6 prefixes.

About this network

The network of a Michigan county government.

What it's used for

• County connectivity. 256 addresses in one /24 with two observed BGP neighbours and no IPv6 announced.

Notable

• The AS handle is ITSC, the county's information technology department rather than the county itself.
• The netname is USSIG-0-53-186-64-24, which contains the block's own address written backwards: 64.186.53.0/24 reversed octet by octet, with the prefix length on the end.
• Every sampled address answers positionally as sag64.saginawcounty.com.

Interesting

• That reversed netname is a small artefact of how reverse DNS works. Addresses are written backwards in in-addr.arpa so that delegation runs from the general to the specific, and whoever generated this label was working from that form rather than from the address as people write it. Templates encode the habits of the system that produced them.
• Two neighbours for a county. Counties run courts, jails, elections, health departments and land records, and the second path is there because the systems behind those addresses have statutory deadlines rather than service level agreements. Redundancy at this scale is a legal requirement wearing networking clothes.

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

Announced prefixes

• 64.186.53.0/24
• 216.52.233.0/24
• 216.52.249.0/24

Upstream networks

• AS26554 US Signal Company, L.L.C.
• AS14103 ACD.net

Adjacent networks

• AS26554 US Signal Company, L.L.C.
• AS14103 ACD.net