AS12033 — ASN-AT-12033

Network type: residential

AS12033 announces 6 IPv4 prefixes covering 40,960 addresses and 1 IPv6 prefixes.

About this network

Adams TelSystems is the broadband arm of a west-central Illinois telephone cooperative, serving the Quincy and Adams County area.

What it's used for

• Residential and business internet access. Sampled addresses answer under dhcp.adams.net, so the space is a dynamically assigned subscriber pool.

Notable

• 41,000 addresses over six prefixes, but eleven observed BGP neighbours. That is a high neighbour count for an access network this small, and suggests the operator does more peering and upstream diversity than its subscriber footprint would require.
• The netnames are systematic — AT-NET-66-226-96-0, AT-NET-206-71-192-0, AT-NET-216-138-0-0 — each naming the block it covers, with one older exception registered as AT-1938.
• A single IPv6 prefix is announced.

Interesting

• Telephone cooperatives are member-owned, which is why rural areas that no commercial carrier would have wired ended up with their own networks. The adams.net domain in the reverse DNS is the same one the co-op has used since it started selling internet access, and it names the county rather than any brand.

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

Announced prefixes

• 66.226.96.0/19
• 75.98.176.0/20
• 159.48.96.0/19
• 206.71.192.0/19
• 216.138.0.0/19
• 216.138.32.0/20
• 2605:3000::/32

Upstream networks

• AS6939 Hurricane Electric LLC
• AS1299 Arelion Sweden AB
• AS174 Cogent Communications, LLC
• AS34927 iFog GmbH

Downstream networks

• AS16856 Blessing Hospital
• AS36667 Phibro Animal Health Corporation
• AS62920 Prairie Power, Inc.
• AS393892 Mid Century Communications

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS16856 Blessing Hospital
• AS1299 Arelion Sweden AB
• AS36667 Phibro Animal Health Corporation
• AS174 Cogent Communications, LLC
• AS62920 Prairie Power, Inc.
• AS393892 Mid Century Communications
• AS34927 iFog GmbH

Internet exchanges

• Equinix Internet Exchange Chicago — Chicago, United States
• Kansas City Internet Exchange — Kansas City, United States