Data as of Nov 4, 2026
192.174.72.0/21
4 residential-proxy exits · 30 daysKiewit Corporation
Residential-proxy exits
Proxy exits
4
0.20% of its addresses · 30 days
Spread
1 of 8
/24s with at least one exit
Providers
1
selling exits here
Oct 5, 2026 – Nov 3, 2026
Exits seen per day
6 observations
Proxy providers listing exits
- AnyIP
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 192.174.72.0/23 since Feb 2017 | AS55028 | Business | 4 | Kiewit Corporation | |
| 192.174.74.0/24 since Nov 2018 | AS55028 | Business | Kiewit Corporation | ||
| 192.174.75.0/24 since Feb 2017 | AS55028 | Business | Kiewit Corporation | ||
| 192.174.76.0/24 since Nov 2018 | AS55028 | Business | Kiewit Corporation | ||
| 192.174.78.0/24 since Feb 2017 | AS55028 | Business | Kiewit Corporation |
Network & registry
Origin network
AS55028
US
- Name
- Kiewit Corporation
- Type
- Business
- Registered
- Feb 20, 2013
- Domain
- kiewit.com
- Website
- kiewit.com
- Industry
- Chemical and Pharmaceutical Manufacturing
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Sep 2013
- Current origin since
- Sep 2013 · 13 yr
- Origin networks
- 2
- Last change of origin
- Feb 2017
Recorded history
History
- Handoffs
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS55028 | ARIN | Kiewit Corp IPv4 Block | MNT-KC-81 | Apr 17, 2020 |
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 192.174.79.0/24 | AS55028 | ARIN | Kiewit Corp IPv4 KPN Backbone | MNT-KC-81 | Apr 17, 2020 |
Whois
Registration for this announcement
- Range
- 192.
174. 72. 0/ 21 - Netname
- KIEWIT-US
- Registrant
- Kiewit Corporation
- Organization
- Kiewit Corporation (KC-81)
- Org address
- 1550 Mike Fahey St, Omaha, NE, 68102
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-192-174-72-0-1
- Parent
- NET-192-0-0-0-0
- Created
- Mar 4, 2013
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 4, 2013
- Status
- assigned
Report abuse
Abuse contact
- NetworkContact@
Kiewit. com - Name
- NetworkContact
- Phone
- +1-877-772-7707
- Handle
- NETWO6157-ARIN