Report for 19923

Name

SHENANDOAH-UNIV - Shenandoah University, 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.

19923 SHENANDOAH-UNIV, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS4922          SHENTEL, US
    AS21508         COMCAST-21508, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
24725 AS19923        ORIGIN  Originate:       2048 /21.00  Transit:          0 /0.00  SHENANDOAH-UNIV, 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       %
10027 AS19923       SHENANDOAH-UNIV, US                                8      6      2      4      4  50.00%


  Prefix               AS Path                              Aggregation Suggestion
  204.154.80.0/24      6939 4922 19923        
  204.154.81.0/24      2152 7922 21508 19923   
  204.154.82.0/23      6939 4922 19923      + Announce - aggregate of 204.154.82.0/24 (6939 4922 19923) and 204.154.83.0/24 (6939 4922 19923)
  204.154.82.0/24      6939 4922 19923      - Withdrawn - aggregated with 204.154.83.0/24 (6939 4922 19923)
  204.154.83.0/24      6939 4922 19923      - Withdrawn - aggregated with 204.154.82.0/24 (6939 4922 19923)
  204.154.84.0/22      6939 4922 19923      + Announce - aggregate of 204.154.84.0/23 (6939 4922 19923) and 204.154.86.0/23 (6939 4922 19923)
  204.154.84.0/24      6939 4922 19923      - Withdrawn - aggregated with 204.154.85.0/24 (6939 4922 19923)
  204.154.85.0/24      6939 4922 19923      - Withdrawn - aggregated with 204.154.84.0/24 (6939 4922 19923)
  204.154.86.0/24      6939 4922 19923      - Withdrawn - aggregated with 204.154.87.0/24 (6939 4922 19923)
  204.154.87.0/24      6939 4922 19923      - Withdrawn - aggregated with 204.154.86.0/24 (6939 4922 19923)

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

AS19923   8 More Specifics   8 Total Advertisements   SHENANDOAH-UNIV, US
    204.154.80.0/24               204.154.80.0/21
    204.154.81.0/24               204.154.80.0/21
    204.154.82.0/24               204.154.80.0/21
    204.154.83.0/24               204.154.80.0/21
    204.154.84.0/24               204.154.80.0/21
    204.154.85.0/24               204.154.80.0/21
    204.154.86.0/24               204.154.80.0/21
    204.154.87.0/24               204.154.80.0/21

Whois Entry

whois: 402551

IANA has recorded AS19923 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS19923\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:       19923
             ASName:         SHENANDOAH-UNIV
             ASHandle:       AS19923
             RegDate:        2001-03-02
             Updated:        2025-11-12
             Ref:            https://rdap.arin.net/registry/autnum/19923
             
             
             OrgName:        Shenandoah University
             OrgId:          SHENAN
             Address:        1460 University Drive
             City:           Winchester
             StateProv:      VA
             PostalCode:     22601
             Country:        US
             RegDate:        1994-10-13
             Updated:        2011-09-24
             Comment:        
             Comment:         
             Ref:            https://rdap.arin.net/registry/entity/SHENAN
             
             
             OrgTechHandle: DFO47-ARIN
             OrgTechName:   Fox, Danny 
             OrgTechPhone:  +1-540-665-5555 
             OrgTechEmail:  dfox2@su.edu
             OrgTechRef:    https://rdap.arin.net/registry/entity/DFO47-ARIN
             
             OrgAbuseHandle: DFO47-ARIN
             OrgAbuseName:   Fox, Danny 
             OrgAbusePhone:  +1-540-665-5555 
             OrgAbuseEmail:  dfox2@su.edu
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/DFO47-ARIN
             
             RTechHandle: IC3-ORG-ARIN
             RTechName:   Institutional Computing
             RTechPhone:  +1-540-678-4321 
             RTechEmail:  helpdesk@su.edu
             RTechRef:    https://rdap.arin.net/registry/entity/IC3-ORG-ARIN
             
             RAbuseHandle: BRAIT23-ARIN
             RAbuseName:   Braithwaite, Eric 
             RAbusePhone:  +1-540-545-7333 
             RAbuseEmail:  ebraithw@su.edu
             RAbuseRef:    https://rdap.arin.net/registry/entity/BRAIT23-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.
             #