AS12133 — LISCO

AS12133 announces 2 IPv4 prefixes covering 20,480 addresses and 0 IPv6 prefixes.

About this network

LISCO, the Local Internet Service Company, is a regional internet provider based in Fairfield, Iowa.

What it's used for

• Residential and business internet access. Sampled addresses answer as 69-18-47-254.lisco.net, per-address subscriber names.

Notable

• Two prefixes and nothing else: 69.18.0.0/18 and 76.76.224.0/20, registered as LSO-BLK-1 and LSO-BLK-2. 20,000 addresses total, against four observed BGP neighbours.
• Both blocks are held by LISCO directly rather than assigned by an upstream, which for a provider this small means it went to the registry for its own space and can change carriers without renumbering anyone.
• No IPv6 announced.

Interesting

• The name is a plain description rather than a brand — the Local Internet Service Company, serving a town. That naming convention dates from a period when being the local ISP was a category rather than a market position, and there was no need to distinguish yourself from competitors who had not arrived yet.

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

Announced prefixes

• 69.18.0.0/18
• 76.76.224.0/20

Upstream networks

• AS174 Cogent Communications, LLC
• AS3257 GTT Communications Inc.

Downstream networks

• AS36634 Great River Health Systems, Inc.

Adjacent networks

• AS174 Cogent Communications, LLC
• AS3257 GTT Communications Inc.
• AS36634 Great River Health Systems, Inc.