Report for 18870

Name

GWB - Great Western Bank, 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.

18870 GWB - Great Western Bank, US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS13576         SDNW-13576 - SDN Communications, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
48423 AS18870        ORIGIN  Originate:        512 /23.00  Transit:          0 /0.00  GWB - Great Western Bank, 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       %
20917 AS18870       GWB - Great Western Bank, US                       2      2      1      1      1  50.00%


  Prefix               AS Path                              Aggregation Suggestion
  192.40.218.0/23      4777 6939 13576 18870 + Announce - aggregate of 192.40.218.0/24 (4777 6939 13576 18870) and 192.40.219.0/24 (4777 6939 13576 18870)
  192.40.218.0/24      4777 6939 13576 18870 - Withdrawn - aggregated with 192.40.219.0/24 (4777 6939 13576 18870)
  192.40.219.0/24      4777 6939 13576 18870 - Withdrawn - aggregated with 192.40.218.0/24 (4777 6939 13576 18870)

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

AS18870   2 More Specifics   2 Total Advertisements   GWB - Great Western Bank, US
    192.40.218.0/24               192.40.218.0/23
    192.40.219.0/24               192.40.218.0/23

Whois Entry

whois: 402332

IANA has recorded AS18870 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS18870\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:       18870
             ASName:         GWB
             ASHandle:       AS18870
             RegDate:        2012-10-03
             Updated:        2012-12-31
             Ref:            https://rdap.arin.net/registry/autnum/18870
             
             
             OrgName:        Great Western Bank
             OrgId:          GWB-3
             Address:        225 S Main Ave
             City:           Sioux Falls
             StateProv:      SD
             PostalCode:     57104
             Country:        US
             RegDate:        2012-08-29
             Updated:        2026-04-30
             Ref:            https://rdap.arin.net/registry/entity/GWB-3
             
             
             OrgRoutingHandle: ASKEP-ARIN
             OrgRoutingName:   Aske, Phillip  
             OrgRoutingPhone:  +1-509-315-1079 
             OrgRoutingEmail:  Phillip.Aske@fib.com
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/ASKEP-ARIN
             
             OrgTechHandle: ASKEP-ARIN
             OrgTechName:   Aske, Phillip  
             OrgTechPhone:  +1-509-315-1079 
             OrgTechEmail:  Phillip.Aske@fib.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ASKEP-ARIN
             
             OrgRoutingHandle: KLIME16-ARIN
             OrgRoutingName:   Klimes, Aaron 
             OrgRoutingPhone:  +1-605-370-6784 
             OrgRoutingEmail:  aaron.klimes@fib.com
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/KLIME16-ARIN
             
             OrgTechHandle: KLIME16-ARIN
             OrgTechName:   Klimes, Aaron 
             OrgTechPhone:  +1-605-370-6784 
             OrgTechEmail:  aaron.klimes@fib.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/KLIME16-ARIN
             
             OrgAbuseHandle: ASKEP-ARIN
             OrgAbuseName:   Aske, Phillip  
             OrgAbusePhone:  +1-509-315-1079 
             OrgAbuseEmail:  Phillip.Aske@fib.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ASKEP-ARIN
             
             OrgAbuseHandle: KLIME16-ARIN
             OrgAbuseName:   Klimes, Aaron 
             OrgAbusePhone:  +1-605-370-6784 
             OrgAbuseEmail:  aaron.klimes@fib.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/KLIME16-ARIN
             
             OrgDNSHandle: KLIME16-ARIN
             OrgDNSName:   Klimes, Aaron 
             OrgDNSPhone:  +1-605-370-6784 
             OrgDNSEmail:  aaron.klimes@fib.com
             OrgDNSRef:    https://rdap.arin.net/registry/entity/KLIME16-ARIN
             
             OrgDNSHandle: ASKEP-ARIN
             OrgDNSName:   Aske, Phillip  
             OrgDNSPhone:  +1-509-315-1079 
             OrgDNSEmail:  Phillip.Aske@fib.com
             OrgDNSRef:    https://rdap.arin.net/registry/entity/ASKEP-ARIN
             
             OrgNOCHandle: ASKEP-ARIN
             OrgNOCName:   Aske, Phillip  
             OrgNOCPhone:  +1-509-315-1079 
             OrgNOCEmail:  Phillip.Aske@fib.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/ASKEP-ARIN
             
             OrgNOCHandle: KLIME16-ARIN
             OrgNOCName:   Klimes, Aaron 
             OrgNOCPhone:  +1-605-370-6784 
             OrgNOCEmail:  aaron.klimes@fib.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/KLIME16-ARIN
             
             RAbuseHandle: NOC12963-ARIN
             RAbuseName:   Network Operations Center
             RAbusePhone:  +1-605-553-9470 
             RAbuseEmail:  fib.network@fib.com
             RAbuseRef:    https://rdap.arin.net/registry/entity/NOC12963-ARIN
             
             RTechHandle: NOC12963-ARIN
             RTechName:   Network Operations Center
             RTechPhone:  +1-605-553-9470 
             RTechEmail:  fib.network@fib.com
             RTechRef:    https://rdap.arin.net/registry/entity/NOC12963-ARIN
             
             RNOCHandle: NOC12963-ARIN
             RNOCName:   Network Operations Center
             RNOCPhone:  +1-605-553-9470 
             RNOCEmail:  fib.network@fib.com
             RNOCRef:    https://rdap.arin.net/registry/entity/NOC12963-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.
             #