Data as of Nov 7, 2026
162.57.128.0/18
No anonymizer space · no proxy exits in 30 daysMDU Resources Group, Inc.
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 162.57.128.0/17 since Aug 2016 | AS64226 | Business | MDU Resources Group, Inc. | |
| 162.57.0.0/16 since Oct 2018 | AS64226 | Business | MDU Resources Group, Inc. |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 162.57.146.0/23 since Dec 2023 | AS15305 | Business | MDU Resources Group, Inc. |
Network & registry
Origin network
AS64226
US
- Name
- MDU Resources Group, Inc.
- Type
- Business
- Registered
- Oct 6, 2015
- Domain
- mdu.com
- Industry
- Natural Gas Distribution
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Feb 2020
- Current origin since
- Feb 2020 · 6.7 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 162.
57. 0. 0/ 16 - Netname
- MDURES
- Registrant
- MDU Resources Group, Inc.
- Organization
- MDU Resources Group, Inc. (MONTAN-2)
- Org address
- 400 N. 4th Street, Bismarck, ND, 58501
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-162-57-0-0-1
- Parent
- NET-162-0-0-0-0
- Created
- Aug 4, 1992
- RIR
- ARIN
- Country
- US
- Delegated
- Aug 4, 1992
- Status
- assigned
Report abuse
Abuse contact
- paul.
martin@ mdu. com - Name
- Martin, Paul
- Phone
- +1-701-530-1720
- Handle
- MARTI1030-ARIN