Autonomous system
AS12033 ASN-AT-12033
Residential ARIN
Summary
Adams TelSystems
isp residential eyeball legacy
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 asAT-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.netdomain 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. 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 | 208.115.136.139 |
| Kansas City Internet Exchange | Kansas City, United States | 206.51.7.133 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 6 prefixes · 40.96K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 7 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS12033- Registry name
- ASN-AT-12033
- Registrant
- Adams TelSystems, Inc.
- Abuse contact
- abuse@adamstel.com
- Registered
- 1999-03-05
- Last changed
- 2019-03-05
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 8 valid, 0 with no ROA
- ROAs
- 8 authorising AS12033
- ASPA
- no ASPA record
- IRR
- 100% registered · 8 of 8 announcements
- Route objects
- 10 naming AS12033
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: 442 networks and 1,773 prefixes, as published 2026-10-13. 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