Data as of Nov 9, 2026
138.185.231.0/24
No anonymizer space · no proxy exits in 30 daysUSC / UFMG PEERING Research Testbed
Announcement
this exact prefix
No RPKI
Announced by
Type
Business
Risk
30 / 100 · Medium
Recently moved
Recent change
New origin Sep 2026
from AS61574 Universidade Federal de Minas Gerais
Network & registry
Registry
Holder
- Organization
- Not stated by the registry
Origin network
AS47065
US
- Name
- USC / UFMG PEERING Research Testbed
- Type
- Education
- Registered
- Jun 16, 2009
- Domain
- columbia.edu
- Website
- peering.ee.columbia.edu
- Industry
- Human Rights and Social Advocacy (Human Rights, Environment and Wildlife Conservation, Other)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
latest 12 of 17 stints
Summary
Routing history
- Pattern
- Rotating
- First seen
- Jun 2016
- Current origin since
- Sep 2026 · 2 mo
- Origin networks
- 2
- Last change of origin
- Sep 2026
Recorded history
History
- Stints on record
- 17
- Handoffs
- 10
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS33207 not the origin | RADB | Columbia/UFMG PEERING Research Testbed | MAINT-PEERT | Apr 27, 2024 |
| AS47065 | RADB | Columbia/UFMG PEERING Research Testbed | MAINT-PEERT | Apr 30, 2024 |
| AS61574 not the origin | RADB | Columbia/UFMG PEERING Research Testbed | MAINT-PEERT | Apr 26, 2024 |
| AS61575 not the origin | RADB | Columbia/UFMG PEERING Research Testbed | MAINT-PEERT | Apr 27, 2024 |
| AS61576 not the origin | RADB | Columbia/UFMG PEERING Research Testbed | MAINT-PEERT | Apr 27, 2024 |
Whois
Registration for this announcement
- Range
- 138.
185. 228. 0/ 22 - Netname
- 258225
- Registrant
- Universidade Federal de Minas Gerais
- Registrant country
- BR
- Organization
- Universidade Federal de Minas Gerais (17217985000457)
- Handle
- 138.
185. 228. 0/ 22 - Created
- Jul 7, 2015
- RIR
- LACNIC
- Country
- BR
- Delegated
- Jul 7, 2015
- Status
- assigned
Report abuse
Abuse contact
- noc@
peering. ee. columbia. edu - Name
- USC/UFMG PEERING Research Testbed
- Handle
- UPRTE