Report for 3820

Name

ACP - American Center for Physics, 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.

3820 ACP - American Center for Physics

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS2828    XO-AS15 - XO Communications
    AS6128    CABLE-NET-1 - Cablevision Systems Corp.

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
2626  AS3820   ORIGIN  Originate:      65536 /16.00  Transit:          0 /0.00  ACP - American Center for Physics

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       %
 7085 AS3820  ACP - American Center for Physics             5      0      0      5      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  149.28.0.0/20        4637 2828 6128 3820    
  149.28.16.0/20       4637 2828 3820         
  149.28.32.0/19       4637 2828 3820         
  149.28.64.0/18       4637 2828 3820         
  149.28.128.0/17      4637 2828 3820         

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

AS3820   5 More Specifics   5 Total Advertisements   ACP - American Center for Physics
    149.28.0.0/20                 149.28.0.0/16
    149.28.16.0/20                149.28.0.0/16
    149.28.32.0/19                149.28.0.0/16
    149.28.64.0/18                149.28.0.0/16
    149.28.128.0/17               149.28.0.0/16

Whois Entry

whois: 402603

IANA has recorded AS3820 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS3820\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:       3820
             ASName:         ACP
             ASHandle:       AS3820
             RegDate:        1994-09-14
             Updated:        2002-03-11
             Ref:            https://rdap.arin.net/registry/autnum/3820
             
             
             OrgName:        American Center for Physics
             OrgId:          ACP-45
             Address:        One Physics Ellipse
             City:           College Park
             StateProv:      MD
             PostalCode:     20740
             Country:        US
             RegDate:        1994-09-14
             Updated:        2012-10-10
             Ref:            https://rdap.arin.net/registry/entity/ACP-45
             
             
             OrgAbuseHandle: ZA132-ARIN
             OrgAbuseName:   American Center for Physics
             OrgAbusePhone:  +1-301-209-3117 
             OrgAbuseEmail:  acp-is@acp.org
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ZA132-ARIN
             
             OrgTechHandle: ZA132-ARIN
             OrgTechName:   American Center for Physics
             OrgTechPhone:  +1-301-209-3117 
             OrgTechEmail:  acp-is@acp.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/ZA132-ARIN
             
             RTechHandle: ZA132-ARIN
             RTechName:   American Center for Physics
             RTechPhone:  +1-301-209-3117 
             RTechEmail:  acp-is@acp.org
             RTechRef:    https://rdap.arin.net/registry/entity/ZA132-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.
             #