Report for 11811

Name

OPCO - Oppenheimer & Co. Inc., 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.

11811 OPCO - Oppenheimer & Co. Inc., US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS32787         PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc., US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
47984 AS11811        ORIGIN  Originate:        512 /23.00  Transit:          0 /0.00  OPCO - Oppenheimer & Co. Inc., 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       %
32159 AS11811       OPCO - Oppenheimer & Co. Inc., US                  2      0      0      2      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  204.86.250.0/24      4777 32787 11811       
  209.127.49.0/24      4777 32787 11811       

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

AS11811   1 More Specifics   2 Total Advertisements   OPCO - Oppenheimer & Co. Inc., US
    204.86.250.0/24               204.86.250.0/23

Whois Entry

whois: 402332

IANA has recorded AS11811 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS11811\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:       11811
             ASName:         OPCO
             ASHandle:       AS11811
             RegDate:        2007-01-17
             Updated:        2022-03-30
             Ref:            https://rdap.arin.net/registry/autnum/11811
             
             
             OrgName:        Oppenheimer & Co. Inc.
             OrgId:          OPPEN
             Address:        85 Broad St.
             City:           New York
             StateProv:      NY
             PostalCode:     10004
             Country:        US
             RegDate:        2006-10-02
             Updated:        2020-03-12
             Ref:            https://rdap.arin.net/registry/entity/OPPEN
             
             
             OrgTechHandle: BAHTI-ARIN
             OrgTechName:   Bahtic, Ernad 
             OrgTechPhone:  +1-212-668-8000 
             OrgTechEmail:  ernad.bahtic@opco.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/BAHTI-ARIN
             
             OrgAbuseHandle: BAHTI-ARIN
             OrgAbuseName:   Bahtic, Ernad 
             OrgAbusePhone:  +1-212-668-8000 
             OrgAbuseEmail:  ernad.bahtic@opco.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/BAHTI-ARIN
             
             RAbuseHandle: BAHTI-ARIN
             RAbuseName:   Bahtic, Ernad 
             RAbusePhone:  +1-212-668-8000 
             RAbuseEmail:  ernad.bahtic@opco.com
             RAbuseRef:    https://rdap.arin.net/registry/entity/BAHTI-ARIN
             
             RTechHandle: BAHTI-ARIN
             RTechName:   Bahtic, Ernad 
             RTechPhone:  +1-212-668-8000 
             RTechEmail:  ernad.bahtic@opco.com
             RTechRef:    https://rdap.arin.net/registry/entity/BAHTI-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.
             #