Data as of Nov 5, 2026
128.91.139.0/24
No anonymizer space · no proxy exits in 30 daysUniversity of Pennsylvania
Network & registry
Announced by
Covering announcement 128.91.0.0/16
- Prefix
- 128.91.0.0/16
- Announced by
- AS55 University of Pennsylvania
- Type
- Business
- Proxy exits
- 10
- RPKI
- RPKI valid
- Netname
- UPENN
- Registrant
- University of Pennsylvania
- RIR
- ARIN
Origin network
AS55
US
- Name
- University of Pennsylvania
- Type
- Education
- Registered
- Dec 18, 1985
- Domain
- upenn.edu
- Website
- www.upenn.edu
- Industry
- Education Software
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 128.91.0.0/16
128.91.0.0/16
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 21 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 128.91.0.0/16 | AS55 | /16 | ARIN | RPKI valid |
IRR
Route objects on 128.91.0.0/16
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS55 | RADB | PennNet | MAINT-UPENN | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 128.
91. 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-128-91-0-0-1
- Parent
- NET-128-0-0-0-0
- Created
- Sep 18, 1985
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 18, 1985
- Status
- assigned
Report abuse
Abuse contact
- nobody@
example. com - Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN