Data as of Nov 8, 2026
165.123.192.0/23
No anonymizer space · no proxy exits in 30 daysUniversity of Pennsylvania
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 165.123.0.0/16 since May 2005 | AS55 | Business | 774 | University of Pennsylvania |
Network & registry
Origin network
AS400653
US
- Name
- University of Pennsylvania
- Type
- Education
- Registered
- Oct 2, 2024
- Domain
- upenn.edu
- Industry
- Education Software
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Apr 2025
- Current origin since
- Apr 2025 · 1.6 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 165.123.192.0/23 | AS400653 | /23 | ARIN | RPKI valid |
| 165.123.0.0/16 | AS55 | /16 | ARIN | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS400653 | RADB | MAINT-UPENN | Jan 28, 2025 |
Whois
Registration for this announcement
- Range
- 165.
123. 0. 0/ 16 - Netname
- UPENN
- Registrant
- University of Pennsylvania
- Organization
- University of Pennsylvania (UNIVER-8-Z)
- Org address
- 3401 Walnut Street, Philadelphia, PA, 19104-6228
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-165-123-0-0-1
- Parent
- NET-165-0-0-0-0
- Created
- May 28, 1993
- RIR
- ARIN
- Country
- US
- Delegated
- May 28, 1993
- Status
- assigned
Report abuse
Abuse contact
- nobody@
example. com - Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN