Report for 46342

Name

AJGCO - Arthur J. Gallagher & Co., 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.

46342 AJGCO - Arthur J. Gallagher & Co., US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS8220          COLT - COLT Technology Services Group Limited, GB
    AS32787         PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc., US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
10524 AS46342        ORIGIN  Originate:       9472 /18.79  Transit:          0 /0.00  AJGCO - Arthur J. Gallagher & Co., 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       %
 4957 AS46342       AJGCO - Arthur J. Gallagher & Co., US             21     15      5     11     10  47.62%


  Prefix               AS Path                              Aggregation Suggestion
  151.147.150.0/23     4777 32787 46342     + Announce - aggregate of 151.147.150.0/24 (4777 32787 46342) and 151.147.151.0/24 (4777 32787 46342)
  151.147.150.0/24     4777 32787 46342     - Withdrawn - aggregated with 151.147.151.0/24 (4777 32787 46342)
  151.147.151.0/24     4777 32787 46342     - Withdrawn - aggregated with 151.147.150.0/24 (4777 32787 46342)
  151.147.155.0/24     4777 32787 46342       
  151.147.160.0/22     4777 32787 46342       
  151.147.176.0/22     4777 32787 46342     + Announce - aggregate of 151.147.176.0/23 (4777 32787 46342) and 151.147.178.0/23 (4777 32787 46342)
  151.147.176.0/23     4777 32787 46342     - Withdrawn - aggregated with 151.147.178.0/23 (4777 32787 46342)
  151.147.178.0/23     4777 32787 46342     - Withdrawn - aggregated with 151.147.176.0/23 (4777 32787 46342)
  151.147.188.0/22     4777 2516 8220 46342   
  151.147.188.0/22     4777 32787 46342     + Announce - aggregate of 151.147.188.0/23 (4777 32787 46342) and 151.147.190.0/23 (4777 32787 46342)
  151.147.188.0/23     4777 32787 46342     - Withdrawn - aggregated with 151.147.190.0/23 (4777 32787 46342)
  151.147.190.0/23     4777 32787 46342     - Withdrawn - aggregated with 151.147.188.0/23 (4777 32787 46342)
  151.147.192.0/21     4777 32787 46342     + Announce - aggregate of 151.147.192.0/22 (4777 32787 46342) and 151.147.196.0/22 (4777 32787 46342)
  151.147.192.0/22     4777 32787 46342     - Withdrawn - aggregated with 151.147.196.0/22 (4777 32787 46342)
  151.147.196.0/24     4777 32787 46342     - Withdrawn - aggregated with 151.147.197.0/24 (4777 32787 46342)
  151.147.197.0/24     4777 32787 46342     - Withdrawn - aggregated with 151.147.196.0/24 (4777 32787 46342)
  151.147.198.0/24     4777 32787 46342     - Withdrawn - aggregated with 151.147.199.0/24 (4777 32787 46342)
  151.147.199.0/24     4777 32787 46342     - Withdrawn - aggregated with 151.147.198.0/24 (4777 32787 46342)
  151.147.235.0/24     4777 32787 46342       
  151.147.240.0/22     4777 32787 46342       
  151.147.252.0/22     4777 32787 46342     + Announce - aggregate of 151.147.252.0/23 (4777 32787 46342) and 151.147.254.0/23 (4777 32787 46342)
  151.147.252.0/24     4777 32787 46342     - Withdrawn - aggregated with 151.147.253.0/24 (4777 32787 46342)
  151.147.253.0/24     4777 32787 46342     - Withdrawn - aggregated with 151.147.252.0/24 (4777 32787 46342)
  151.147.254.0/24     4777 32787 46342     - Withdrawn - aggregated with 151.147.255.0/24 (4777 32787 46342)
  151.147.255.0/24     4777 32787 46342     - Withdrawn - aggregated with 151.147.254.0/24 (4777 32787 46342)
  160.191.22.0/24      4777 32787 46342       

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

AS46342   20 More Specifics   21 Total Advertisements   AJGCO - Arthur J. Gallagher & Co., US
    151.147.150.0/24              151.147.0.0/16
    151.147.151.0/24              151.147.0.0/16
    151.147.155.0/24              151.147.0.0/16
    151.147.160.0/22              151.147.0.0/16
    151.147.176.0/23              151.147.0.0/16
    151.147.178.0/23              151.147.0.0/16
    151.147.188.0/22              151.147.0.0/16
    151.147.188.0/23              151.147.0.0/16
    151.147.190.0/23              151.147.0.0/16
    151.147.192.0/22              151.147.0.0/16
    151.147.196.0/24              151.147.0.0/16
    151.147.197.0/24              151.147.0.0/16
    151.147.198.0/24              151.147.0.0/16
    151.147.199.0/24              151.147.0.0/16
    151.147.235.0/24              151.147.0.0/16
    151.147.240.0/22              151.147.0.0/16
    151.147.252.0/24              151.147.0.0/16
    151.147.253.0/24              151.147.0.0/16
    151.147.254.0/24              151.147.0.0/16
    151.147.255.0/24              151.147.0.0/16

Whois Entry

whois: 402591

IANA has recorded AS46342 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS46342\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:       46342
             ASName:         AJGCO
             ASHandle:       AS46342
             RegDate:        2008-08-19
             Updated:        2012-03-02
             Ref:            https://rdap.arin.net/registry/autnum/46342
             
             
             OrgName:        Arthur J. Gallagher & Co.
             OrgId:          AJG-1
             Address:        2850 Golf Road
             City:           Rolling Meadows
             StateProv:      IL
             PostalCode:     60008
             Country:        US
             RegDate:        1999-04-09
             Updated:        2018-12-05
             Ref:            https://rdap.arin.net/registry/entity/AJG-1
             
             
             OrgAbuseHandle: BHO145-ARIN
             OrgAbuseName:   Ho, Bryant 
             OrgAbusePhone:  +1-630-285-4408 
             OrgAbuseEmail:  bryant_ho@ajg.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/BHO145-ARIN
             
             OrgTechHandle: BHO145-ARIN
             OrgTechName:   Ho, Bryant 
             OrgTechPhone:  +1-630-285-4408 
             OrgTechEmail:  bryant_ho@ajg.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/BHO145-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.
             #