Report for 398572

Name

MONOLITHICPOWER-SJC - Monolithic Power Systems,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.

398572 MONOLITHICPOWER-SJC - Monolithic Power Systems,Inc, US

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS33667         CMCS - Comcast Cable Communications, LLC, US
    AS36734         PAXIO-SFBA - Paxio Inc., US
    AS33651         CMCS - Comcast Cable Communications, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
57679 AS398572       ORIGIN  Originate:        512 /23.00  Transit:          0 /0.00  MONOLITHICPOWER-SJC - Monolithic Power Systems,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       %
76026 AS398572      MONOLITHICPOWER-SJC - Monolithic Power System      2      0      0      2      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  50.220.216.0/24      4777 2516 7922 33651 398572   
  64.112.67.0/24       4608 7575 3491 36734 398572   

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

AS398572   1 More Specifics   2 Total Advertisements   MONOLITHICPOWER-SJC - Monolithic Power Systems,Inc, US
    50.220.216.0/24               50.128.0.0/9

Whois Entry

whois: 402332

IANA has recorded AS398572 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS398572\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:       398572
             ASName:         MONOLITHICPOWER-SJC
             ASHandle:       AS398572
             RegDate:        2020-07-14
             Updated:        2020-07-14
             Ref:            https://rdap.arin.net/registry/autnum/398572
             
             
             OrgName:        Monolithic Power Systems,Inc
             OrgId:          MPS-302
             Address:        79 Great Oaks Blvd
             City:           San Jose
             StateProv:      CA
             PostalCode:     95119
             Country:        US
             RegDate:        2020-06-18
             Updated:        2024-11-25
             Comment:        https://www.monolithicpower.com
             Ref:            https://rdap.arin.net/registry/entity/MPS-302
             
             
             OrgTechHandle: MPSIT-ARIN
             OrgTechName:   MPS IT
             OrgTechPhone:  +1-408-826-0685 
             OrgTechEmail:  mpsit-arin@monolithicpower.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/MPSIT-ARIN
             
             OrgRoutingHandle: MPSIT-ARIN
             OrgRoutingName:   MPS IT
             OrgRoutingPhone:  +1-408-826-0685 
             OrgRoutingEmail:  mpsit-arin@monolithicpower.com
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/MPSIT-ARIN
             
             OrgNOCHandle: MPSIT-ARIN
             OrgNOCName:   MPS IT
             OrgNOCPhone:  +1-408-826-0685 
             OrgNOCEmail:  mpsit-arin@monolithicpower.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/MPSIT-ARIN
             
             OrgAbuseHandle: MPSIT-ARIN
             OrgAbuseName:   MPS IT
             OrgAbusePhone:  +1-408-826-0685 
             OrgAbuseEmail:  mpsit-arin@monolithicpower.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/MPSIT-ARIN
             
             OrgDNSHandle: MPSIT-ARIN
             OrgDNSName:   MPS IT
             OrgDNSPhone:  +1-408-826-0685 
             OrgDNSEmail:  mpsit-arin@monolithicpower.com
             OrgDNSRef:    https://rdap.arin.net/registry/entity/MPSIT-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.
             #