Report for 40841

Name

MARKETAXESS-INC-AS - MARKETAXESS HOLDINGS, 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 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.

40841 MARKETAXESS-INC-AS, US

  Adjacency:     7  Upstream:     6  Downstream:     1
  Upstream Adjacent AS list
    AS3257          GTT-BACKBONE GTT, US
    AS8220          COLT COLT Technology Services Group Limited, GB
    AS174           COGENT-174, US
    AS3356          LEVEL3, US
    AS6461          ZAYO-6461, US
    AS6939          HURRICANE, US
  Downstream Adjacent AS list
    AS40481         G3-ASN-1, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
15180 AS40841        ORIGIN  Originate:       5120 /19.68  Transit:          0 /0.00  MARKETAXESS-INC-AS, 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       %
16719 AS40841       MARKETAXESS-INC-AS, US                            15      3      1     13      2  13.33%


  Prefix               AS Path                              Aggregation Suggestion
  38.108.243.0/24      2914 174 40841 40841 40841 40841 40841 40841 40841 40841   
  64.215.249.0/24      6939 40841             
  192.69.225.0/24      6939 40841             
  192.69.226.0/24      57866 3356 40841       
  194.69.74.0/23       2497 8220 40841        
  194.69.74.0/24       2497 174 40841 40841   
  194.69.75.0/24       2497 8220 40841      - Withdrawn - matching aggregate 194.69.74.0/23 2497 8220 40841
  194.69.80.0/23       6939 40841 40841 40841 40841 40841 40841 40841   
  194.69.80.0/24       2497 6461 40841        
  194.69.82.0/24       6939 40841             
  204.128.52.0/22      6939 40841 40841 40841 40841 40841 40841 40841   
  204.128.52.0/24      2497 6461 40841        
  204.128.53.0/24      6939 40841             
  204.128.54.0/23      6939 40841           + Announce - aggregate of 204.128.54.0/24 (6939 40841) and 204.128.55.0/24 (6939 40841)
  204.128.54.0/24      6939 40841           - Withdrawn - aggregated with 204.128.55.0/24 (6939 40841)
  204.128.55.0/24      6939 40841           - Withdrawn - aggregated with 204.128.54.0/24 (6939 40841)

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

AS40841   15 More Specifics   16 Total Advertisements   MARKETAXESS-INC-AS, US
    38.108.243.0/24               38.0.0.0/8
    64.208.116.0/24               64.208.0.0/17
    64.209.115.0/24               64.209.0.0/17
    64.215.249.0/24               64.215.0.0/16
    66.160.185.0/24               66.160.128.0/18
    192.69.224.0/24               192.69.224.0/22
    192.69.225.0/24               192.69.224.0/22
    194.69.80.0/23                194.69.64.0/19
    194.69.80.0/24                194.69.64.0/19
    194.69.82.0/24                194.69.64.0/19
    194.69.87.0/24                194.69.64.0/19
    204.128.52.0/24               204.128.52.0/22
    204.128.53.0/24               204.128.52.0/22
    204.128.54.0/24               204.128.52.0/22
    204.128.55.0/24               204.128.52.0/22
    192.69.226.0/24               192.69.224.0/22

Prefixes added and withdrawn by this origin AS in the past 7 days.

    + 194.69.80.0/23              Announced
    - 192.69.226.0/24             Withdrawn

Whois Entry

whois: 402603

IANA has recorded AS40841 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS40841\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:       40841
             ASName:         MARKETAXESS-INC-AS
             ASHandle:       AS40841
             RegDate:        2008-04-29
             Updated:        2022-09-06
             Comment:        Coontact MarketAxess Holdings Inc. at (212) 813-6111 or network@marketaxess.com for any questions or comments.
             Ref:            https://rdap.arin.net/registry/autnum/40841
             
             
             OrgName:        MARKETAXESS HOLDINGS, INC.
             OrgId:          MARKE-84
             Address:        299 Park Avenue, 10th Floor
             City:           NEW YORK
             StateProv:      NY
             PostalCode:     10171
             Country:        US
             RegDate:        2008-04-15
             Updated:        2022-09-06
             Ref:            https://rdap.arin.net/registry/entity/MARKE-84
             
             
             OrgAbuseHandle: NEMH-ARIN
             OrgAbuseName:   Network Engineering - MarketAxess Holdings inc
             OrgAbusePhone:  +1-212-813-6111 
             OrgAbuseEmail:  NETWORK@marketaxess.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/NEMH-ARIN
             
             OrgNOCHandle: NEMH-ARIN
             OrgNOCName:   Network Engineering - MarketAxess Holdings inc
             OrgNOCPhone:  +1-212-813-6111 
             OrgNOCEmail:  NETWORK@marketaxess.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/NEMH-ARIN
             
             OrgTechHandle: NEMH-ARIN
             OrgTechName:   Network Engineering - MarketAxess Holdings inc
             OrgTechPhone:  +1-212-813-6111 
             OrgTechEmail:  NETWORK@marketaxess.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/NEMH-ARIN
             
             RTechHandle: NEMH-ARIN
             RTechName:   Network Engineering - MarketAxess Holdings inc
             RTechPhone:  +1-212-813-6111 
             RTechEmail:  NETWORK@marketaxess.com
             RTechRef:    https://rdap.arin.net/registry/entity/NEMH-ARIN
             
             RAbuseHandle: NEMH-ARIN
             RAbuseName:   Network Engineering - MarketAxess Holdings inc
             RAbusePhone:  +1-212-813-6111 
             RAbuseEmail:  NETWORK@marketaxess.com
             RAbuseRef:    https://rdap.arin.net/registry/entity/NEMH-ARIN
             
             RNOCHandle: NEMH-ARIN
             RNOCName:   Network Engineering - MarketAxess Holdings inc
             RNOCPhone:  +1-212-813-6111 
             RNOCEmail:  NETWORK@marketaxess.com
             RNOCRef:    https://rdap.arin.net/registry/entity/NEMH-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.
             #