Data as of Nov 4, 2026
128.91.0.0/16
10 residential-proxy exits · 30 daysUniversity of Pennsylvania
Residential-proxy exits
Proxy exits
10
0.02% of its addresses · 30 days
Spread
5 of 256
/24s with at least one exit
Providers
32
selling exits here
Oct 5, 2026 – Nov 3, 2026
Exits seen per day
1.6K observations
/24s with the most always-on exits
| /24 | Always-on exits | Proxy exits | |
|---|---|---|---|
| 128.91.56.0/24 | 0 | 4 | |
| 128.91.19.0/24 | 0 | 3 | |
| 128.91.80.0/24 | 0 | 1 | |
| 128.91.127.0/24 | 0 | 1 | |
| 128.91.196.0/24 | 0 | 1 |
Proxy providers listing exits
- AnyIP
- BartProxies
- BirdProxies
- BottingTools
- ByteProxies
- Byteful
- CatProxies
- ColaProxy
- Datarama
- EnigmaProxy
- Evomi
- FlexyProxies
- FloppyData
- GSocks
- GonzoProxy
- Infatica
- InfiniteProxies
- LemonPrime
- MangoProxy
- NodeProxy
- NovaProxy
- Proxiware
- Proxy-Seller
- ProxyEmpire
- ProxyGeo
- Proxyma
- RainProxy
- ResiProxies
- Shifter
- Thordata
- VantageProxies
- VitalExclusive
Network & registry
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 this prefix
Summary
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 the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS55 | RADB | PennNet | MAINT-UPENN | Nov 13, 2023 |
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 128.91.139.0/24 | AS69 | RADB | MAINT-UPENN | Sep 4, 2024 |
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