Report for 5739

Name

UCSC - University of California, Santa Cruz, 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.

5739 UCSC, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS2152          CENIC-2152, US
    AS2153          CENIC-2153, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
1933  AS5739         ORIGIN  Originate:     131072 /15.00  Transit:          0 /0.00  UCSC, 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       %
31408 AS5739        UCSC, US                                           2      0      0      2      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  128.114.0.0/16       2152 5739              
  169.233.0.0/16       2152 5739              

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

AS5739   1 More Specifics   4 Total Advertisements   UCSC, US
    169.233.0.0/16                169.232.0.0/15
    137.164.23.182/31             137.164.0.0/16

Prefixes added and withdrawn by this origin AS in the past 7 days.

    - 137.164.23.182/31           Withdrawn

Whois Entry

whois: 402609

IANA has recorded AS5739 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS5739\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:       5739
             ASName:         UCSC
             ASHandle:       AS5739
             RegDate:        1995-09-13
             Updated:        2011-06-29
             Ref:            https://rdap.arin.net/registry/autnum/5739
             
             
             OrgName:        University of California, Santa Cruz
             OrgId:          UCSC
             Address:        University of California, Santa Cruz
             Address:        Information Technology Services
             Address:        Communications Building
             Address:        620 Baskin Circle
             City:           Santa Cruz
             StateProv:      CA
             PostalCode:     95064
             Country:        US
             RegDate:        1986-03-05
             Updated:        2024-11-25
             Ref:            https://rdap.arin.net/registry/entity/UCSC
             
             
             OrgAbuseHandle: UCSCN1-ARIN
             OrgAbuseName:   UCSC Security
             OrgAbusePhone:  +1-831-459-2714 
             OrgAbuseEmail:  abuse@ucsc.edu
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/UCSCN1-ARIN
             
             OrgNOCHandle: UCSCN-ARIN
             OrgNOCName:   Network Operations Center
             OrgNOCPhone:  +1-831-459-2714 
             OrgNOCEmail:  noc@ucsc.edu
             OrgNOCRef:    https://rdap.arin.net/registry/entity/UCSCN-ARIN
             
             OrgTechHandle: UCSCN-ARIN
             OrgTechName:   Network Operations Center
             OrgTechPhone:  +1-831-459-2714 
             OrgTechEmail:  noc@ucsc.edu
             OrgTechRef:    https://rdap.arin.net/registry/entity/UCSCN-ARIN
             
             RTechHandle: UCSCN-ARIN
             RTechName:   Network Operations Center
             RTechPhone:  +1-831-459-2714 
             RTechEmail:  noc@ucsc.edu
             RTechRef:    https://rdap.arin.net/registry/entity/UCSCN-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.
             #