Report for 11336

Name

BLACKROCK-FINANCIAL-MANAGEMENT - BlackRock Financial Management, 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 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.

11336 BLACKROCK-FINANCIAL-MANAGEMENT - BlackRock Financial Management, Inc., US

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS701           UUNET - Verizon Business, US
    AS22513         CHARTER-22513-WA-OR-C3 - Charter Communications LLC, 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
29952 AS11336        ORIGIN  Originate:       1536 /21.42  Transit:          0 /0.00  BLACKROCK-FINANCIAL-MANAGEMENT - BlackRock Financial Management, Inc., 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       %
20416 AS11336       BLACKROCK-FINANCIAL-MANAGEMENT - BlackRock Fi      6      2      1      5      1  16.67%


  Prefix               AS Path                              Aggregation Suggestion
  69.52.32.0/24        4777 32787 11336       
  69.52.34.0/24        4777 32787 11336       
  69.52.35.0/24        4777 2497 701 11336    
  69.52.40.0/24        4777 2516 20115 22513 11336   
  69.52.42.0/23        4777 32787 11336     + Announce - aggregate of 69.52.42.0/24 (4777 32787 11336) and 69.52.43.0/24 (4777 32787 11336)
  69.52.42.0/24        4777 32787 11336     - Withdrawn - aggregated with 69.52.43.0/24 (4777 32787 11336)
  69.52.43.0/24        4777 32787 11336     - Withdrawn - aggregated with 69.52.42.0/24 (4777 32787 11336)

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

AS11336   6 More Specifics   6 Total Advertisements   BLACKROCK-FINANCIAL-MANAGEMENT - BlackRock Financial Management, Inc., US
    69.52.32.0/24                 69.52.0.0/16
    69.52.34.0/24                 69.52.0.0/16
    69.52.35.0/24                 69.52.0.0/16
    69.52.40.0/24                 69.52.0.0/16
    69.52.42.0/24                 69.52.0.0/16
    69.52.43.0/24                 69.52.0.0/16

Whois Entry

whois: 402332

IANA has recorded AS11336 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS11336\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:       11336
             ASName:         BLACKROCK-FINANCIAL-MANAGEMENT
             ASHandle:       AS11336
             RegDate:        1998-07-08
             Updated:        2025-01-27
             Ref:            https://rdap.arin.net/registry/autnum/11336
             
             
             OrgName:        BlackRock Financial Management, Inc.
             OrgId:          BFML
             Address:        50 Hudson Yards
             City:           New York
             StateProv:      NY
             PostalCode:     10001
             Country:        US
             RegDate:        1994-04-21
             Updated:        2023-04-28
             Ref:            https://rdap.arin.net/registry/entity/BFML
             
             
             OrgTechHandle: ARINC56-ARIN
             OrgTechName:   Arin-Contact
             OrgTechPhone:  +1-212-810-3788 
             OrgTechEmail:  arin-contact@blackrock.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ARINC56-ARIN
             
             OrgAbuseHandle: NETWO8337-ARIN
             OrgAbuseName:   network-abuse
             OrgAbusePhone:  +1-212-810-3788 
             OrgAbuseEmail:  network-abuse@blackrock.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO8337-ARIN
             
             OrgTechHandle: HUSHE3-ARIN
             OrgTechName:   Hu, Shenghai 
             OrgTechPhone:  +1-212-810-3646 
             OrgTechEmail:  shenghai.hu@blackrock.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/HUSHE3-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.
             #