Report for 14864

Name

GREENWICH - NatWest Markets Securities 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.

14864 GREENWICH - NatWest Markets Securities Inc., US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS46887         CROWNCASTLE-AS46887 - Crown Castle Fiber LLC, US
    AS54004         LIGHTPATH - Cablevision Lightpath LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
44290 AS14864        ORIGIN  Originate:        768 /22.42  Transit:          0 /0.00  GREENWICH - NatWest Markets Securities 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       %
20655 AS14864       GREENWICH - NatWest Markets Securities Inc.,       3      2      1      2      1  33.33%


  Prefix               AS Path                              Aggregation Suggestion
  146.121.20.0/23      4777 2516 3356 6128 54004 14864 + Announce - aggregate of 146.121.20.0/24 (4777 2516 3356 6128 54004 14864) and 146.121.21.0/24 (4777 2516 3356 6128 54004 14864)
  146.121.20.0/24      4777 2516 3356 6128 54004 14864 - Withdrawn - aggregated with 146.121.21.0/24 (4777 2516 3356 6128 54004 14864)
  146.121.21.0/24      4777 2516 3356 6128 54004 14864 - Withdrawn - aggregated with 146.121.20.0/24 (4777 2516 3356 6128 54004 14864)
  146.121.23.0/24      4777 2516 1299 46887 14864   

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

AS14864   3 More Specifics   3 Total Advertisements   GREENWICH - NatWest Markets Securities Inc., US
    146.121.20.0/24               146.121.0.0/16
    146.121.21.0/24               146.121.0.0/16
    146.121.23.0/24               146.121.0.0/16

Whois Entry

whois: 402332

IANA has recorded AS14864 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS14864\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:       14864
             ASName:         GREENWICH
             ASHandle:       AS14864
             RegDate:        2000-02-16
             Updated:        2025-03-02
             Ref:            https://rdap.arin.net/registry/autnum/14864
             
             
             OrgName:        NatWest Markets Securities Inc.
             OrgId:          GCM-30
             Address:        600 Washington Blvd
             City:           Stamford
             StateProv:      CT
             PostalCode:     06901
             Country:        US
             RegDate:        2000-02-16
             Updated:        2025-02-28
             Ref:            https://rdap.arin.net/registry/entity/GCM-30
             
             
             OrgTechHandle: FUSCO11-ARIN
             OrgTechName:   Fusco, Richard 
             OrgTechPhone:  +1-203-897-6085 
             OrgTechEmail:  richard.fusco@natwestmarkets.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/FUSCO11-ARIN
             
             OrgAbuseHandle: FUSCO11-ARIN
             OrgAbuseName:   Fusco, Richard 
             OrgAbusePhone:  +1-203-897-6085 
             OrgAbuseEmail:  richard.fusco@natwestmarkets.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/FUSCO11-ARIN
             
             OrgTechHandle: ITCOM6-ARIN
             OrgTechName:   itcomm@natwestmarkets
             OrgTechPhone:  +1-203-897-6085 
             OrgTechEmail:  itcomm@natwestmarkets.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ITCOM6-ARIN
             
             RTechHandle: FUSCO11-ARIN
             RTechName:   Fusco, Richard 
             RTechPhone:  +1-203-897-6085 
             RTechEmail:  richard.fusco@natwestmarkets.com
             RTechRef:    https://rdap.arin.net/registry/entity/FUSCO11-ARIN
             
             RAbuseHandle: FUSCO11-ARIN
             RAbuseName:   Fusco, Richard 
             RAbusePhone:  +1-203-897-6085 
             RAbuseEmail:  richard.fusco@natwestmarkets.com
             RAbuseRef:    https://rdap.arin.net/registry/entity/FUSCO11-ARIN
             
             RNOCHandle: FUSCO11-ARIN
             RNOCName:   Fusco, Richard 
             RNOCPhone:  +1-203-897-6085 
             RNOCEmail:  richard.fusco@natwestmarkets.com
             RNOCRef:    https://rdap.arin.net/registry/entity/FUSCO11-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.
             #