Autonomous system
AS11232 MIDCO-NET
Residential ARIN
Summary
Midcontinent Communications (Midco)
isp legacy
MIDCO-NET is Midcontinent Communications, trading as Midco — the regional cable operator serving the northern Plains (the Dakotas, Minnesota, Wisconsin and Kansas). It is a consumer broadband network, and the routing evidence says so unambiguously.
What it's used for
Residential and small-business broadband access. RIS observes 79 IPv4 prefixes carrying ~783,616 addresses, 19 IPv6 prefixes, and 67 observed neighbours. Three-quarters of a million IPv4 addresses is subscriber-scale, and 67 neighbours is the right shape for a regional eyeball network: enough to multihome and peer at exchanges, nowhere near the hundreds-to-thousands a wholesale carrier accumulates.
Reverse DNS settles the rest. Nearly every sampled address answers as <a>-<b>-<c>-<d>-dynamic.midco.net or -static.midco.net — DHCP-assigned cable-modem pools with static assignments interleaved for business customers. The ARIN network handles reinforce it: the announced blocks are literally named NET-96-2-0-0-23-DHCP, NET-165-23-0-0-24-DHCP, NET-24-220-0-0-24-STATIC. The space is registered to the operator's own networks and wears the operator's own rDNS, so there is no leasing or third-party-registrant shape here.
Notable
The address inventory is an archaeology of cable-ISP growth: legacy 24.x cable space, 96.2.0.0/15, 184.83.0.0/16, 208.107.0.0/16 and several 165.x/140.186.0.0/16 blocks that predate Midco's use of them. IPv6 is properly deployed, with a /32 and several larger aggregates in production.
Interesting
Midco is one of the few sizeable independent US cable operators left; most peers of its era were absorbed into Charter or Comcast.
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 4 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Equinix Internet Exchange Chicago | Chicago, United States | 208.115.136.166 |
| Midwest Internet Cooperative Exchange | Minneapolis, United States | 206.108.255.170 |
| Interconnection eXchange Denver | Denver, United States | 206.53.175.85 |
| Kansas City Internet Exchange | Kansas City, United States | 206.51.7.145 |
Transit providers
10 upstream, 46 downstream and 77 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 158 prefixes · 780K addresses IPv6 73 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 231 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11232- Registry name
- MIDCO-NET
- Registrant
- Midcontinent Communications
- Abuse contact
- abuse@midco.com
- Registered
- 1998-05-22
- Last changed
- 2016-08-01
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 96% valid · 94 valid, 4 with no ROA
- ROAs
- 104 authorising AS11232
- ASPA
- no ASPA record
- IRR
- 100% registered · 98 of 98 announcements
- Route objects
- 111 naming AS11232
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: 431 networks and 1,775 prefixes, as published 2026-10-11. 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