Report for 27163

Name

INTERACTIVE-BROKERS-CORP - Interactive Brokers Corp, 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.

27163 INTERACTIVE-BROKERS-CORP - Interactive Brokers Corp, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS6461          ZAYO-6461 - Zayo Bandwidth, 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
24573 AS27163        ORIGIN  Originate:       2048 /21.00  Transit:          0 /0.00  INTERACTIVE-BROKERS-CORP - Interactive Brokers Corp, 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       %
16312 AS27163       INTERACTIVE-BROKERS-CORP - Interactive Broker      6      4      2      4      2  33.33%


  Prefix               AS Path                              Aggregation Suggestion
  64.190.196.0/23      4777 2497 6461 27163   
  64.190.196.0/23      4777 32787 27163     + Announce - aggregate of 64.190.196.0/24 (4777 32787 27163) and 64.190.197.0/24 (4777 32787 27163)
  64.190.196.0/24      4777 32787 27163     - Withdrawn - aggregated with 64.190.197.0/24 (4777 32787 27163)
  64.190.197.0/24      4777 32787 27163     - Withdrawn - aggregated with 64.190.196.0/24 (4777 32787 27163)
  209.127.240.0/23     4777 2497 6461 27163   
  209.127.240.0/23     4777 32787 27163     + Announce - aggregate of 209.127.240.0/24 (4777 32787 27163) and 209.127.241.0/24 (4777 32787 27163)
  209.127.240.0/24     4777 32787 27163     - Withdrawn - aggregated with 209.127.241.0/24 (4777 32787 27163)
  209.127.241.0/24     4777 32787 27163     - Withdrawn - aggregated with 209.127.240.0/24 (4777 32787 27163)

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

AS27163   5 More Specifics   6 Total Advertisements   INTERACTIVE-BROKERS-CORP - Interactive Brokers Corp, US
    64.190.196.0/23               64.190.192.0/21
    64.190.196.0/24               64.190.192.0/21
    64.190.197.0/24               64.190.192.0/21
    209.127.240.0/24              209.127.240.0/23
    209.127.241.0/24              209.127.240.0/23

Whois Entry

whois: 402603

IANA has recorded AS27163 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS27163\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:       27163
             ASName:         INTERACTIVE-BROKERS-CORP
             ASHandle:       AS27163
             RegDate:        2017-10-18
             Updated:        2025-12-15
             Ref:            https://rdap.arin.net/registry/autnum/27163
             
             
             OrgName:        Interactive Brokers Corp
             OrgId:          IBL-40
             Address:        2 Pickwick Plaza
             City:           Greenwich
             StateProv:      CT
             PostalCode:     06830
             Country:        US
             RegDate:        2017-07-21
             Updated:        2025-12-16
             Ref:            https://rdap.arin.net/registry/entity/IBL-40
             
             
             OrgTechHandle: LARKI23-ARIN
             OrgTechName:   Larkin, Robert 
             OrgTechPhone:  +1-203-742-8108 
             OrgTechEmail:  rlarkin@interactivebrokers.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/LARKI23-ARIN
             
             OrgAbuseHandle: LARKI23-ARIN
             OrgAbuseName:   Larkin, Robert 
             OrgAbusePhone:  +1-203-742-8108 
             OrgAbuseEmail:  rlarkin@interactivebrokers.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/LARKI23-ARIN
             
             OrgAbuseHandle: CDC18-ARIN
             OrgAbuseName:   Center, Cyber Defense
             OrgAbusePhone:  +1-203-618-5720 
             OrgAbuseEmail:  cybersecurity@interactivebrokers.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/CDC18-ARIN
             
             OrgNOCHandle: LARKI23-ARIN
             OrgNOCName:   Larkin, Robert 
             OrgNOCPhone:  +1-203-742-8108 
             OrgNOCEmail:  rlarkin@interactivebrokers.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/LARKI23-ARIN
             
             OrgTechHandle: LIAOW2-ARIN
             OrgTechName:   Liao, Warren 
             OrgTechPhone:  +1-203-618-5809 
             OrgTechEmail:  wliao@interactivebrokers.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/LIAOW2-ARIN
             
             RAbuseHandle: CDC18-ARIN
             RAbuseName:   Center, Cyber Defense
             RAbusePhone:  +1-203-618-5720 
             RAbuseEmail:  cybersecurity@interactivebrokers.com
             RAbuseRef:    https://rdap.arin.net/registry/entity/CDC18-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.
             #