Report for 33359

Name

COWEN-AS-3 - COWEN EXECUTION SERVICES LLC., 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.

33359 COWEN-AS-3 - COWEN EXECUTION SERVICES LLC., US

  Adjacency:     4  Upstream:     4  Downstream:     0
  Upstream Adjacent AS list
    AS6461          ZAYO-6461 - Zayo Bandwidth, US
    AS174           COGENT-174 - Cogent Communications, LLC, US
    AS701           UUNET - Verizon Business, US
    AS32787         PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc., US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
16266 AS33359        ORIGIN  Originate:       4352 /19.91  Transit:          0 /0.00  COWEN-AS-3 - COWEN EXECUTION SERVICES LLC., 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       %
22224 AS33359       COWEN-AS-3 - COWEN EXECUTION SERVICES LLC., U     14      1      0     13      1   7.14%


  Prefix               AS Path                              Aggregation Suggestion
  67.43.80.0/24        4777 2516 174 33359    
  67.43.82.0/23        4777 2516 701 33359    
  67.43.82.0/24        4777 2516 174 33359    
  67.43.83.0/24        4777 32787 33359       
  67.43.84.0/23        4777 2516 701 33359    
  67.43.84.0/24        4777 32787 33359       
  67.43.85.0/24        4777 2497 174 33359    
  67.43.88.0/23        4777 2516 174 33359    
  67.43.88.0/24        4777 32787 33359       
  67.43.89.0/24        4777 2516 174 33359  - Withdrawn - matching aggregate 67.43.88.0/23 4777 2516 174 33359
  67.43.91.0/24        4777 2516 701 33359    
  67.43.93.0/24        4777 2516 701 33359    
  208.89.28.0/24       4777 2516 701 33359    
  208.89.29.0/24       4777 2516 174 33359    

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

AS33359   14 More Specifics   14 Total Advertisements   COWEN-AS-3 - COWEN EXECUTION SERVICES LLC., US
    67.43.80.0/24                 67.43.80.0/20
    67.43.82.0/23                 67.43.80.0/20
    67.43.82.0/24                 67.43.80.0/20
    67.43.83.0/24                 67.43.80.0/20
    67.43.84.0/23                 67.43.80.0/20
    67.43.84.0/24                 67.43.80.0/20
    67.43.85.0/24                 67.43.80.0/20
    67.43.88.0/23                 67.43.80.0/20
    67.43.88.0/24                 67.43.80.0/20
    67.43.89.0/24                 67.43.80.0/20
    67.43.91.0/24                 67.43.80.0/20
    67.43.93.0/24                 67.43.80.0/20
    208.89.28.0/24                208.89.28.0/22
    208.89.29.0/24                208.89.28.0/22

Whois Entry

whois: 402613

IANA has recorded AS33359 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS33359\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:       33359
             ASName:         COWEN-AS-3
             ASHandle:       AS33359
             RegDate:        2004-12-02
             Updated:        2017-09-27
             Ref:            https://rdap.arin.net/registry/autnum/33359
             
             
             OrgName:        COWEN EXECUTION SERVICES LLC.
             OrgId:          BNYBR
             Address:        599 Lexington Ave
             Address:        20th Floor
             City:           New York
             StateProv:      NY
             PostalCode:     10022
             Country:        US
             RegDate:        2003-11-26
             Updated:        2025-10-27
             Ref:            https://rdap.arin.net/registry/entity/BNYBR
             
             
             OrgAbuseHandle: TDDNS-ARIN
             OrgAbuseName:   TD-DNS-POC
             OrgAbusePhone:  +1-416-438-6868 
             OrgAbuseEmail:  dnstech@td.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/TDDNS-ARIN
             
             OrgTechHandle: PALEO-ARIN
             OrgTechName:   Paleologus, Anthony 
             OrgTechPhone:  +1-856-470-3236 
             OrgTechEmail:  anthony.paleologus@td.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/PALEO-ARIN
             
             OrgAbuseHandle: ABA20-ARIN
             OrgAbuseName:   Bankouski, Andrei 
             OrgAbusePhone:  +1-646-562-1800 
             OrgAbuseEmail:  tdc-network@tdsecurities.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABA20-ARIN
             
             OrgTechHandle: ABA20-ARIN
             OrgTechName:   Bankouski, Andrei 
             OrgTechPhone:  +1-646-562-1800 
             OrgTechEmail:  tdc-network@tdsecurities.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ABA20-ARIN
             
             OrgTechHandle: CHANI1-ARIN
             OrgTechName:   Chan, Irwin 
             OrgTechPhone:  +1-647-964-3402 
             OrgTechEmail:  irwin.chan@td.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/CHANI1-ARIN
             
             RTechHandle: ABA20-ARIN
             RTechName:   Bankouski, Andrei 
             RTechPhone:  +1-646-562-1800 
             RTechEmail:  tdc-network@tdsecurities.com
             RTechRef:    https://rdap.arin.net/registry/entity/ABA20-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.
             #