AS11550 — SDL-20-AS

Network type: residential

AS11550 announces 24 IPv4 prefixes covering 49,664 addresses and 0 IPv6 prefixes.

About this network

SDL-20-AS is Smithville Digital, the broadband arm of the Smithville telephone company in south-central Indiana. RIS sees 13 IPv4 prefixes, roughly 50,700 addresses, no IPv6, and 15 observed BGP neighbours.

What it's used for

Consumer and small-business internet access. The reverse DNS settles this without ambiguity: sampled addresses across 66.244.64.0/18, 216.249.64.0/19 and 173.243.176.0/20 all resolve under dyn.smithville.net — dynamically assigned subscriber pools — while 204.89.253.0/24 carries static.smithvilledigital.net and 68.68.80.0/20 carries consultech.smithvilledigital.net. Dynamic pools at that volume are the definition of an eyeball network: this is where the customers live. Fifteen neighbours against 50k addresses is a regional access provider with a healthy set of upstreams and peers, not a wholesale carrier.

Notable

The registrant list is untidy and entirely innocent. Three blocks out of 38.0.0.0/8 register to Cogent (COGENT-A) — provider-assigned space announced by the customer. 216.249.64.0/19 registers to Smithville Telephone Company DSL, the same business under its older name. And 66.244.64.0/18 still registers to Precision Tools, yet its addresses answer to prec.smithvilledigital.net in Smithville's own reverse zone: a stale registration over space Smithville plainly operates.

Interesting

192.188.224.0/24 is registered to the City of Bloomington and hosts www.bloomington.in.gov. A municipal government riding its local telco's AS is a good illustration of the rule that an AS is classified by what it carries, not only by who holds it.

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

Announced prefixes

• 38.22.128.0/20
• 38.86.80.0/21
• 38.86.92.0/22
• 38.124.112.0/20
• 38.162.48.0/20
• 66.244.64.0/23
• 66.244.66.0/24
• 66.244.68.0/22
• 66.244.72.0/21
• 66.244.80.0/20
• 66.244.96.0/20
• 66.244.112.0/21
• 66.244.120.0/23
• 66.244.124.0/22
• 68.68.80.0/21
• 68.68.88.0/24
• 68.68.90.0/23
• 68.68.92.0/22
• 162.219.196.0/22
• 173.243.176.0/20
• 192.188.224.0/24
• 199.96.120.0/22
• 204.89.253.0/24
• 216.249.64.0/19

Upstream networks

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

Downstream networks

• AS22615 Monroe County Community School Corporation
• AS32305 COOK GROUP INC
• AS395999 Kimball International, Inc.
• AS25920 -Reserved AS-
• AS62945 Cornerstone Information Systems, Inc.
• AS400977 Schneck Medical Center
• AS14574 RTC Communications
• AS40183 Bell Techlogix
• AS17010 Hoosier Energy Rural Electric Cooperative, Inc.
• AS11874 Columbus Regional Hospital
• AS20348 OFS Brands Holdings Inc

Adjacent networks

• AS174 Cogent Communications, LLC
• AS1299 Arelion Sweden AB
• AS6939 Hurricane Electric LLC
• AS22615 Monroe County Community School Corporation
• AS395999 Kimball International, Inc.
• AS25920 -Reserved AS-
• AS32305 COOK GROUP INC
• AS62945 Cornerstone Information Systems, Inc.
• AS400977 Schneck Medical Center
• AS14574 RTC Communications
• AS40183 Bell Techlogix
• AS17010 Hoosier Energy Rural Electric Cooperative, Inc.
• AS11874 Columbus Regional Hospital
• AS20348 OFS Brands Holdings Inc

Internet exchanges

• Equinix Internet Exchange Chicago — Chicago, United States
• FD-IX - Indianapolis — Indianapolis, United States