Autonomous system
AS6580 GWTC - Golden West Telecommunications Coop., Inc.
Residential ARIN
Summary
Golden West Telecommunications Cooperative
isp residential eyeball legacy
GWTC is the autonomous system of Golden West Telecommunications Cooperative, Inc., a member-owned telephone and broadband cooperative headquartered in Wall, South Dakota.
What it's used for
Golden West provides internet, telephone and television service across a large rural footprint stretching from South Dakota's western border toward the eastern side of the state. AS6580 originates around 45,000 IPv4 addresses spread over roughly 50 prefixes, mostly /22s in 69.77.0.0/16, 68.69.0.0/16, 216.196.0.0/16 and 64.251.0.0/16. Reverse DNS follows a uniform subscriber pattern under gwtc.net, for example 69-77-192-1.ip4.gwtc.net.
Notable
This is a residential eyeball network. The heavily fragmented prefix list, many small /22s rather than a few large aggregates, is typical of a rural cooperative that grew by adding exchanges and acquiring neighbouring territories over decades.
Golden West traces its telephone service back to 1916 and incorporated as a cooperative in 1952, long before it became an internet provider. ARIN registered AS6580 in May 1996.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 45.06K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 6 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS6580- Registry name
- GWTC
- Registrant
- Golden West Telecommunications Coop., Inc.
- Abuse contact
- netabuse@goldenwest.com
- Registered
- 1996-05-29
- Last changed
- 2023-08-28
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 51 with no ROA
- ROAs
- 0 authorising AS6580
- ASPA
- no ASPA record
- IRR
- 100% registered · 51 of 51 announcements
- Route objects
- 28 naming AS6580
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: 453 networks and 1,846 prefixes, as published 2026-11-12. 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