Report for 53309

Name

BLACKHILLSCORP - Black Hills Corporation, 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.

53309 BLACKHILLSCORP - Black Hills Corporation, 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
50799 AS53309        ORIGIN  Originate:        512 /23.00  Transit:          0 /0.00  BLACKHILLSCORP - Black Hills Corporation, 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       %
23271 AS53309       BLACKHILLSCORP - Black Hills Corporation, US       2      2      1      1      1  50.00%


  Prefix               AS Path                              Aggregation Suggestion
  74.116.252.0/23      4777 6939 13576 53309 53309 + Announce - aggregate of 74.116.252.0/24 (4777 6939 13576 53309 53309) and 74.116.253.0/24 (4777 6939 13576 53309 53309)
  74.116.252.0/24      4777 6939 13576 53309 53309 - Withdrawn - aggregated with 74.116.253.0/24 (4777 6939 13576 53309 53309)
  74.116.253.0/24      4777 6939 13576 53309 53309 - Withdrawn - aggregated with 74.116.252.0/24 (4777 6939 13576 53309 53309)

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

AS53309   2 More Specifics   2 Total Advertisements   BLACKHILLSCORP - Black Hills Corporation, US
    74.116.252.0/24               74.116.252.0/22
    74.116.253.0/24               74.116.252.0/22

Whois Entry

whois: 402332

IANA has recorded AS53309 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS53309\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:       53309
             ASName:         BLACKHILLSCORP
             ASHandle:       AS53309
             RegDate:        2009-12-07
             Updated:        2024-01-05
             Ref:            https://rdap.arin.net/registry/autnum/53309
             
             
             OrgName:        Black Hills Corporation
             OrgId:          BLACK-90
             Address:        7001 Mt. Rushmore Rd
             Address:        PO Box 1400
             City:           Rapid City
             StateProv:      SD
             PostalCode:     57709-1400
             Country:        US
             RegDate:        2009-08-10
             Updated:        2024-05-03
             Ref:            https://rdap.arin.net/registry/entity/BLACK-90
             
             
             OrgAbuseHandle: FRIEJ2-ARIN
             OrgAbuseName:   Frie, Jeremy 
             OrgAbusePhone:  +1-605-721-2147 
             OrgAbuseEmail:  jfrie@blackhillscorp.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/FRIEJ2-ARIN
             
             OrgTechHandle: FRIEJ2-ARIN
             OrgTechName:   Frie, Jeremy 
             OrgTechPhone:  +1-605-721-2147 
             OrgTechEmail:  jfrie@blackhillscorp.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/FRIEJ2-ARIN
             
             RTechHandle: FRIEJ2-ARIN
             RTechName:   Frie, Jeremy 
             RTechPhone:  +1-605-721-2147 
             RTechEmail:  jfrie@blackhillscorp.com
             RTechRef:    https://rdap.arin.net/registry/entity/FRIEJ2-ARIN
             
             RAbuseHandle: FRIEJ2-ARIN
             RAbuseName:   Frie, Jeremy 
             RAbusePhone:  +1-605-721-2147 
             RAbuseEmail:  jfrie@blackhillscorp.com
             RAbuseRef:    https://rdap.arin.net/registry/entity/FRIEJ2-ARIN
             
             RNOCHandle: FRIEJ2-ARIN
             RNOCName:   Frie, Jeremy 
             RNOCPhone:  +1-605-721-2147 
             RNOCEmail:  jfrie@blackhillscorp.com
             RNOCRef:    https://rdap.arin.net/registry/entity/FRIEJ2-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.
             #