Autonomous system
AS53309 BLACKHILLSCORP - Black Hills Corporation
Unclassified ARIN
Summary
Black Hills Corporation
utility business corporate energy
The AS handle BLACKHILLSCORP is held by Black Hills Corporation.
What it's used for
- The address space carries corporate infrastructure for a diversified energy company, as indicated by the netname
BLACKHILLSCORP-COMand registrant Black Hills Corporation. - The AS announces 512 IPv4 addresses across 1 prefix (74.116.252.0/23) with 1 observed neighbour, indicating a small, self-contained internal network rather than a transit or access provider.
- Traffic from this AS consists of internal corporate communications, utility operations, and administrative endpoints for Black Hills Corporation's electric and gas utility services.
Notable
- The registrant Black Hills Corporation matches the AS holder and netname, confirming consistent ownership.
- Black Hills Corporation is an American diversified energy company operating electric and gas utilities in South Dakota, Montana, Wyoming, Colorado, and Arkansas.
- The inventory consists of a single /23 block, representing a finely subdivided internal corporate estate.
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.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS13576 | SDN Communications | 130 |
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 1 prefixes · 512 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS53309- Registry name
- BLACKHILLSCORP
- Registrant
- Black Hills Corporation
- Abuse contact
- andy.gerlach@blackhillsenergy.com
- Registered
- 2009-12-07
- Last changed
- 2026-08-31
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 2 valid, 0 with no ROA
- ROAs
- 2 authorising AS53309
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 1 naming AS53309
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
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