Data as of Nov 7, 2026
147.73.20.96/27
No anonymizer space · no proxy exits in 30 daysPittsburgh Supercomputing Center
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 147.73.0.0/16 since Apr 2006 | AS5050 | Business | Pittsburgh Supercomputing Center |
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 147.73.0.0/16 | 65,536 | PSC-TRANSIT-SUBNET | Pittsburgh Supercomputing Center (PSC-Z) · US | Direct Allocation | Jul 5, 1991 | pscnet-admin@ |
| └ 147.73.20.96/27 | 32 | PSC-BLK73-20-96-27 | unknown | — | — | — |
Network & registry
Announced by
Covering announcement 147.73.16.0/20
- Prefix
- 147.73.16.0/20
- Announced by
- AS5050 Pittsburgh Supercomputing Center
- Type
- Business
- RPKI
- RPKI valid
- Netname
- PSC-TRANSIT-SUBNET
- Registrant
- Pittsburgh Supercomputing Center
- RIR
- ARIN
Origin network
AS5050
US
- Name
- Pittsburgh Supercomputing Center
- Type
- Education
- Registered
- Mar 29, 1995
- Domain
- psc.edu
- Website
- www.3rox.net
- Industry
- Colleges, Universities, and Professional Schools
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
147.73.16.0/20
Routing history
- Pattern
- Stable
- First seen
- Sep 2014
- Current origin since
- Dec 2023 · 2.9 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 147.73.16.0/20 | AS5050 | /20 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 147.
73. 0. 0/ 16 - Netname
- PSC-TRANSIT-SUBNET
- Registrant
- Pittsburgh Supercomputing Center
- Organization
- Pittsburgh Supercomputing Center (PSC-Z)
- Org address
- 300 S Craig St, Pittsburgh, PA, 15213
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-147-73-0-0-1
- Parent
- NET-147-0-0-0-0
- Created
- Jul 5, 1991
- RIR
- ARIN
- Country
- US
- Delegated
- Jul 5, 1991
- Status
- assigned
Report abuse
Abuse contact
- pscnet-admin@
psc. edu - Name
- Pittsburgh Supercomputing Center
- Phone
- +1-412-268-4960
- Handle
- PN-ORG-ARIN