Autonomous system
AS11550 SDL-20-AS
Residential ARIN Cable/DSL/ISP
Summary
Smithville Digital, LLC
isp legacy
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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Equinix Internet Exchange Chicago | Chicago, United States | 208.115.136.114 |
| FD-IX - Indianapolis | Indianapolis, United States | 206.53.139.52 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 24 prefixes · 49.66K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 24 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11550- Registry name
- SDL-20-AS
- Registrant
- Smithville Digital, LLC
- Abuse contact
- abuse@smithville.com
- Registered
- 1998-09-30
- Last changed
- 2012-03-02
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- Smithville Digital, LLC
- Also known as
- Smithville Fiber, Smithville Telecom, Smithville Communications
- Network type
- Cable/DSL/ISP
- Scope
- North America
- Traffic ratio
- Mostly Inbound
- Peering policy
- Selective
- IRR as-set
AS11550:AS-CONE- Present at
- 2 exchanges
- Facilities
- 4 facilities
- Website
- https://www.smithville.com
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 92% valid · 12 valid, 1 with no ROA
- ROAs
- 14 authorising AS11550
- ASPA
- no ASPA record
- IRR
- 100% registered · 13 of 13 announcements
- Route objects
- 41 naming AS11550
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 447 networks and 1,845 prefixes, as published 2026-10-31. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere