Data as of Nov 9, 2026
204.158.144.0/20
No anonymizer space · no proxy exits in 30 daysUniversity of Texas System
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 204.158.0.0/16 | 65,536 | THENET-CIDR-3 | University of Texas System (UTS-2-Z) · US | Direct Allocation | Sep 22, 1994 | abuse@ |
| └ 204.158.144.0/20 | 4,096 | UTPB-204-158-144-0-20 | University of Texas of the Permian Basin (UTPB) · US | Reassigned | Feb 21, 1995 | bridges_ |
Network & registry
Registry
Holder
- Organization
- University of Texas System
- Handle
- UTS-2-Z
- Range
- 204.
158. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Sep 22, 1994
- Legacy
- yes
Origin network
AS10812
US
- Name
- University of Texas System
- Type
- Education
- Registered
- Dec 4, 1997
- Domain
- utsystem.edu
- Industry
- Colleges, Universities, and Professional Schools
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Jun 2005
- Current origin since
- Dec 2016 · 9.9 yr
- Origin networks
- 2
- Last change of origin
- Dec 2016
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 204.158.144.0/20 | AS10812 | /20 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 204.
158. 144. 0/ 20 - Netname
- UTPB-204-158-144-0-20
- Registrant
- University of Texas of the Permian Basin
- Organization
- University of Texas of the Permian Basin (UTPB)
- Org address
- 4901 E. University, Odessa, TX, 79762
- Org country
- US
- Type
- Reassigned
- Handle
- NET-204-158-144-0-1
- Parent
- NET-204-158-0-0-1
- Created
- Feb 21, 1995
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 22, 1994
- Status
- assigned
Report abuse
Abuse contact
- bridges_
k@ utpb. edu - Name
- Bridges, Ken
- Phone
- +1-432-552-2419
- Handle
- BRIDG154-ARIN