Data as of Nov 7, 2026
147.73.0.0/16
No anonymizer space · no proxy exits in 30 daysPittsburgh Supercomputing Center
Announcements
Nesting
More-specifics by size
Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 147.73.0.0/24 since Jun 2008 | AS5050 | Business | Pittsburgh Supercomputing Center | |
| 147.73.3.0/24 since Mar 2024 | AS5050 | Business | Pittsburgh Supercomputing Center | |
| 147.73.4.0/24 since May 2009 | AS5050 | Business | Pittsburgh Supercomputing Center | |
| 147.73.5.0/24 since Sep 18, 2026 | AS5050 | Business | Pittsburgh Supercomputing Center | |
| 147.73.6.0/24 since Jan 2020 | AS5050 | Business | Pittsburgh Supercomputing Center | |
| 147.73.7.0/24 since Feb 2023 | AS5050 | Business | Pittsburgh Supercomputing Center | |
| 147.73.8.0/24 since Nov 2023 | AS5050 | Business | Pittsburgh Supercomputing Center | |
| 147.73.16.0/20 since Dec 2023 | AS5050 | Business | Pittsburgh Supercomputing Center | |
| 147.73.192.0/18 since Jan 2017 | AS1207 | Business | Pittsburgh Supercomputing Center |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, 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
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
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Apr 2006
- Current origin since
- Apr 2006 · 21 yr
- Origin networks
- 1
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