Report for 55

Name

UPENN - University of Pennsylvania, 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 AS2.0) 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.

55 UPENN - University of Pennsylvania, US

  Adjacency:     4  Upstream:     2  Downstream:     2
  Upstream Adjacent AS list
    AS11537         INTERNET2-RESEARCH-EDU - Internet2, US
    AS11164         INTERNET2-I2PX - Internet2, US
  Downstream Adjacent AS list
    AS46274         UPHS - Penn Medicine, US
    AS69            UPENN-NETWORK-LAB - University of Pennsylvania, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
1063  AS55           ORG+TRN Originate:     262400 /14.00  Transit:        256 /24.00 UPENN - University of Pennsylvania, 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       %
30626 AS55          UPENN - University of Pennsylvania, US             5      0      0      5      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  128.91.0.0/16        4608 7575 11537 55     
  130.91.0.0/16        4608 7575 11537 55     
  158.130.0.0/16       4608 7575 11537 55     
  165.123.0.0/16       4608 7575 11537 55     
  192.84.2.0/24        4608 7575 11537 55     

Whois Entry

whois: 402332

IANA has recorded AS55 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS55\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:       55
             ASName:         UPENN
             ASHandle:       AS55
             RegDate:        1985-12-18
             Updated:        2021-10-14
             Comment:        https://www.upenn.edu/
             Comment:        Main AS number for PennNet of the University of Pennsylvania
             Ref:            https://rdap.arin.net/registry/autnum/55
             
             
             OrgName:        University of Pennsylvania
             OrgId:          UNIVER-8-Z
             Address:        3401 Walnut Street
             Address:        Suite 221A
             City:           Philadelphia
             StateProv:      PA
             PostalCode:     19104-6228
             Country:        US
             RegDate:        2010-01-05
             Updated:        2022-08-03
             Ref:            https://rdap.arin.net/registry/entity/UNIVER-8-Z
             
             
             OrgAbuseHandle: ISO-ARIN
             OrgAbuseName:   Information Security Officer
             OrgAbusePhone:  +1-215-573-2037 
             OrgAbuseEmail:  security@upenn.edu
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ISO-ARIN
             
             OrgNOCHandle: UNIVE-ARIN
             OrgNOCName:   University of Pennsylvania
             OrgNOCPhone:  +1-215-573-9631 
             OrgNOCEmail:  noc@isc.upenn.edu
             OrgNOCRef:    https://rdap.arin.net/registry/entity/UNIVE-ARIN
             
             OrgTechHandle: OBRIE72-ARIN
             OrgTechName:   O'Brien, John 
             OrgTechPhone:  +1-215-898-9818 
             OrgTechEmail:  obrienjw@upenn.edu
             OrgTechRef:    https://rdap.arin.net/registry/entity/OBRIE72-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.
             #