Report for 5050

Name

PSC-EXT - Pittsburgh Supercomputing Center, US

AS Adjacency Report

In the context of this report "Upstream" indicates that there is an adjacent AS that lines between the BGP table collection point (in this case at AS6447) and the specified AS. Similarly, "Downstream" refers to an adjacent AS that lies beyond the specified AS. This upstream / downstream categorisation is strictly a description relative topology, and should not be confused with provider / customer / peer inter-AS relationships.

5050 PSC-EXT, US

  Adjacency:    20  Upstream:     6  Downstream:    14
  Upstream Adjacent AS list
    AS293           ESNET, US
    AS11164         INTERNET2-I2PX, US
    AS6939          HURRICANE, US
    AS174           COGENT-174, US
    AS3356          LEVEL3, US
    AS11537         INTERNET2-RESEARCH-EDU, US
  Downstream Adjacent AS list
    AS11009         CARLOWUNIV, US
    AS27604         SETONHILLUNIVERSITY, US
    AS4130          UPITT-AS, US
    AS19281         QUAD9-AS-1, CH
    AS23102         RMU-EDU, US
    AS1207          PSCNET-HS-TEST-AS, US
    AS1206          PSCNET-HS-AS, US
    AS18572         BVIU27, US
    AS36407         CERT, US
    AS12118         WVU, US
    AS63472         EINETWORK, US
    AS7925          WVNET, US
    AS9             CMU-ROUTER, US
    AS3783          AIU-ALLEGHENY-CONNECT-RWAN, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
2700  AS5050         ORG+TRN Originate:      81152 /15.69  Transit:     271872 /13.95 PSC-EXT, US

Aggregation Suggestions

        Filter: Aggregates, Specifics

This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.

 Rank AS            AS Name                                      Current  Wthdw  Aggte  Annce Redctn       %
15643 AS5050        PSC-EXT, US                                       17      3      1     15      2  11.76%


  Prefix               AS Path                              Aggregation Suggestion
  104.128.208.0/20     6939 5050              
  147.72.249.0/24      6939 5050              
  147.73.0.0/16        6939 5050              
  147.73.0.0/24        293 5050               
  147.73.3.0/24        293 5050               
  147.73.4.0/24        293 5050               
  147.73.5.0/24        11537 5050             
  147.73.6.0/24        293 5050               
  147.73.7.0/24        49788 174 5050         
  147.73.8.0/24        6939 5050            - Withdrawn - matching aggregate 147.73.0.0/16 6939 5050
  147.73.16.0/20       3303 11164 5050        
  167.88.240.0/20      6939 5050              
  192.70.222.0/24      293 5050               
  192.88.114.0/23      293 5050             + Announce - aggregate of 192.88.114.0/24 (293 5050) and 192.88.115.0/24 (293 5050)
  192.88.114.0/24      293 5050             - Withdrawn - aggregated with 192.88.115.0/24 (293 5050)
  192.88.115.0/24      293 5050             - Withdrawn - aggregated with 192.88.114.0/24 (293 5050)
  192.112.102.0/24     6939 5050              
  192.231.244.0/24     293 5050               

Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.

AS5050   7 More Specifics   16 Total Advertisements   PSC-EXT, US
    147.72.15.0/24                147.72.0.0/16
    147.72.249.0/24               147.72.0.0/16
    147.73.0.0/24                 147.73.0.0/16
    147.73.1.0/24                 147.73.0.0/16
    147.73.4.0/24                 147.73.0.0/16
    147.73.6.0/24                 147.73.0.0/16
    147.73.8.0/24                 147.73.0.0/16
    147.73.5.0/24                 147.73.0.0/16
    147.73.7.0/24                 147.73.0.0/16

Prefixes added and withdrawn by this origin AS in the past 7 days.

    + 147.72.15.0/24              Announced
    + 147.73.8.0/24               Announced
    - 147.73.5.0/24               Withdrawn
    - 147.73.7.0/24               Withdrawn

Whois Entry

whois: 402603

IANA has recorded AS5050 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS5050\n             
             #
             # ARIN WHOIS data and services are subject to the Terms of Use
             # available at: https://www.arin.net/resources/registry/whois/tou/
             #
             # If you see inaccuracies in the results, please report at
             # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
             #
             # Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
             #
             
             
             ASNumber:       5050
             ASName:         PSC-EXT
             ASHandle:       AS5050
             RegDate:        1995-03-29
             Updated:        2012-04-02
             Ref:            https://rdap.arin.net/registry/autnum/5050
             
             
             OrgName:        Pittsburgh Supercomputing Center
             OrgId:          PSC-Z
             Address:        300 S Craig St
             City:           Pittsburgh
             StateProv:      PA
             PostalCode:     15213
             Country:        US
             RegDate:        2008-05-29
             Updated:        2022-04-27
             Ref:            https://rdap.arin.net/registry/entity/PSC-Z
             
             
             OrgTechHandle: PN-ORG-ARIN
             OrgTechName:   Pittsburgh Supercomputing Center
             OrgTechPhone:  +1-412-268-4960 
             OrgTechEmail:  pscnet-admin@psc.edu
             OrgTechRef:    https://rdap.arin.net/registry/entity/PN-ORG-ARIN
             
             OrgTechHandle: SC274-ARIN
             OrgTechName:   Cunningham, Stephen 
             OrgTechPhone:  +1-412-268-4960 
             OrgTechEmail:  pscnet-admin@psc.edu
             OrgTechRef:    https://rdap.arin.net/registry/entity/SC274-ARIN
             
             OrgAbuseHandle: SC274-ARIN
             OrgAbuseName:   Cunningham, Stephen 
             OrgAbusePhone:  +1-412-268-4960 
             OrgAbuseEmail:  pscnet-admin@psc.edu
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/SC274-ARIN
             
             OrgAbuseHandle: PN-ORG-ARIN
             OrgAbuseName:   Pittsburgh Supercomputing Center
             OrgAbusePhone:  +1-412-268-4960 
             OrgAbuseEmail:  pscnet-admin@psc.edu
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/PN-ORG-ARIN
             
             RTechHandle: PN-ORG-ARIN
             RTechName:   Pittsburgh Supercomputing Center
             RTechPhone:  +1-412-268-4960 
             RTechEmail:  pscnet-admin@psc.edu
             RTechRef:    https://rdap.arin.net/registry/entity/PN-ORG-ARIN
             
             
             #
             # ARIN WHOIS data and services are subject to the Terms of Use
             # available at: https://www.arin.net/resources/registry/whois/tou/
             #
             # If you see inaccuracies in the results, please report at
             # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
             #
             # Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
             #