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 AS4637) 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-CIS - University of Pennsylvania

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS174     COGENT Cogent/PSI

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
748   AS55     ORIGIN  Originate:     262400 /14.00  Transit:          0 /0.00  UPENN-CIS - University of Pennsylvania

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       %
 6553 AS55    UPENN-CIS - University of Pennsylvania        5      0      0      5      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  128.91.0.0/16        4637 174 55            
  130.91.0.0/16        4637 174 55            
  158.130.0.0/16       4637 174 55            
  165.123.0.0/16       4637 174 55            
  192.84.2.0/24        4637 174 55            

Whois Entry

whois: 402603

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
             
             
             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
             
             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
             
             
             #
             # 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.
             #