Report for 399938

Name

BHE-TRANSIT - Berkshire Hathaway Energy Company, 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.

399938 BHE-TRANSIT - Berkshire Hathaway Energy Company, US

  Adjacency:     5  Upstream:     3  Downstream:     2
  Upstream Adjacent AS list
    AS7018          ATT-INTERNET4 - AT&T Enterprises, LLC, US
    AS3356          LEVEL3 - Level 3 Parent, LLC, US
    AS21508         COMCAST-21508 - Comcast Cable Communications, LLC, US
  Downstream Adjacent AS list
    AS399088        NVENERGY-1 - Nevada Power Company, US
    AS399939        BHE-GTS - BHE GT&S, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
24367 AS399938       ORG+TRN Originate:       2304 /20.83  Transit:        512 /23.00 BHE-TRANSIT - Berkshire Hathaway Energy Company, 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       %
30507 AS399938      BHE-TRANSIT - Berkshire Hathaway Energy Compa      5      2      1      4      1  20.00%


  Prefix               AS Path                              Aggregation Suggestion
  131.219.144.0/22     4777 2497 7018 399938 + Announce - aggregate of 131.219.144.0/23 (4777 2497 7018 399938) and 131.219.146.0/23 (4777 2497 7018 399938)
  131.219.144.0/23     4777 2497 7018 399938 - Withdrawn - aggregated with 131.219.146.0/23 (4777 2497 7018 399938)
  131.219.146.0/23     4777 2497 7018 399938 - Withdrawn - aggregated with 131.219.144.0/23 (4777 2497 7018 399938)
  131.219.148.0/23     4777 2497 7018 399938   
  131.219.150.0/24     4777 2497 3356 399938   
  131.219.152.0/23     4777 2516 3356 399938   

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

AS399938   5 More Specifics   5 Total Advertisements   BHE-TRANSIT - Berkshire Hathaway Energy Company, US
    131.219.144.0/23              131.219.0.0/16
    131.219.146.0/23              131.219.0.0/16
    131.219.148.0/23              131.219.0.0/16
    131.219.150.0/24              131.219.0.0/16
    131.219.152.0/23              131.219.0.0/16

Prefixes added and withdrawn by this origin AS in the past 7 days.

    + 131.219.152.0/23            Announced

Whois Entry

whois: 402332

IANA has recorded AS399938 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS399938\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:       399938
             ASName:         BHE-TRANSIT
             ASHandle:       AS399938
             RegDate:        2021-08-10
             Updated:        2021-09-16
             Ref:            https://rdap.arin.net/registry/autnum/399938
             
             
             OrgName:        Berkshire Hathaway Energy Company
             OrgId:          BHE-16
             Address:        666 Grand Ave, STE 2700
             City:           Des Moines
             StateProv:      IA
             PostalCode:     50309
             Country:        US
             RegDate:        2021-07-01
             Updated:        2025-12-18
             Ref:            https://rdap.arin.net/registry/entity/BHE-16
             
             
             OrgTechHandle: ZM58-ARIN
             OrgTechName:   MidAmerican Energy Holdings Company
             OrgTechPhone:  +1-515-252-6663 
             OrgTechEmail:  networkedgefw@brkenergy.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ZM58-ARIN
             
             OrgAbuseHandle: ZM58-ARIN
             OrgAbuseName:   MidAmerican Energy Holdings Company
             OrgAbusePhone:  +1-515-252-6663 
             OrgAbuseEmail:  networkedgefw@brkenergy.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ZM58-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.
             #