Report for 36321

Name

CSTL - Castle Global 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.

36321 CSTL, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS11404         AS-WAVE-1, US
    AS6461          ZAYO-6461, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
29369 AS36321        ORIGIN  Originate:       1792 /21.19  Transit:          0 /0.00  CSTL, 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       %
41342 AS36321       CSTL, US                                           5      0      0      5      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  64.124.8.0/24        2497 6461 36321        
  66.187.0.0/23        2497 6461 36321        
  74.80.208.0/24       2497 6461 36321        
  199.83.232.0/23      2497 6461 36321        
  199.184.214.0/24     2497 6461 36321        

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

AS36321   1 More Specifics   4 Total Advertisements   CSTL, US
    64.124.8.0/24                 64.124.0.0/17

Prefixes added and withdrawn by this origin AS in the past 7 days.

    - 66.187.0.0/23               Withdrawn

Whois Entry

whois: 402603

IANA has recorded AS36321 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS36321\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:       36321
             ASName:         CSTL
             ASHandle:       AS36321
             RegDate:        2017-12-11
             Updated:        2017-12-11
             Ref:            https://rdap.arin.net/registry/autnum/36321
             
             
             OrgName:        Castle Global Inc.
             OrgId:          CG-594
             Address:        100 1st Street, 11th Floor
             City:           San Francisco
             StateProv:      CA
             PostalCode:     94105
             Country:        US
             RegDate:        2017-09-14
             Updated:        2025-03-19
             Ref:            https://rdap.arin.net/registry/entity/CG-594
             
             
             OrgTechHandle: KARPM16-ARIN
             OrgTechName:   Karpman, Dmitriy 
             OrgTechPhone:  +1-857-206-3524 
             OrgTechEmail:  dmitriy@thehive.ai
             OrgTechRef:    https://rdap.arin.net/registry/entity/KARPM16-ARIN
             
             OrgNOCHandle: NELSO673-ARIN
             OrgNOCName:   Nelson, Eric 
             OrgNOCPhone:  +1-916-803-7841 
             OrgNOCEmail:  eric@thehive.ai
             OrgNOCRef:    https://rdap.arin.net/registry/entity/NELSO673-ARIN
             
             OrgTechHandle: NELSO673-ARIN
             OrgTechName:   Nelson, Eric 
             OrgTechPhone:  +1-916-803-7841 
             OrgTechEmail:  eric@thehive.ai
             OrgTechRef:    https://rdap.arin.net/registry/entity/NELSO673-ARIN
             
             OrgAbuseHandle: NELSO673-ARIN
             OrgAbuseName:   Nelson, Eric 
             OrgAbusePhone:  +1-916-803-7841 
             OrgAbuseEmail:  eric@thehive.ai
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/NELSO673-ARIN
             
             OrgRoutingHandle: NELSO673-ARIN
             OrgRoutingName:   Nelson, Eric 
             OrgRoutingPhone:  +1-916-803-7841 
             OrgRoutingEmail:  eric@thehive.ai
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/NELSO673-ARIN
             
             OrgDNSHandle: NELSO673-ARIN
             OrgDNSName:   Nelson, Eric 
             OrgDNSPhone:  +1-916-803-7841 
             OrgDNSEmail:  eric@thehive.ai
             OrgDNSRef:    https://rdap.arin.net/registry/entity/NELSO673-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.
             #