Report for 53609

Name

AMDOFASCO-ASN - ArcelorMittal Dofasco G.P., CA

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.

53609 AMDOFASCO-ASN - ArcelorMittal Dofasco G.P., CA

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS577           BACOM - Bell Canada, CA
    AS812           ROGERS-COMMUNICATIONS - Rogers Communications Canada Inc., CA

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
50831 AS53609        ORIGIN  Originate:        512 /23.00  Transit:          0 /0.00  AMDOFASCO-ASN - ArcelorMittal Dofasco G.P., CA

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       %
48569 AS53609       AMDOFASCO-ASN - ArcelorMittal Dofasco G.P., C      2      0      0      2      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  142.153.3.0/24       4777 2497 577 53609    
  192.139.152.0/24     4777 2516 3257 812 53609   

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

AS53609   1 More Specifics   2 Total Advertisements   AMDOFASCO-ASN - ArcelorMittal Dofasco G.P., CA
    142.153.3.0/24                142.153.0.0/16

Whois Entry

whois: 402332

IANA has recorded AS53609 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS53609\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:       53609
             ASName:         AMDOFASCO-ASN
             ASHandle:       AS53609
             RegDate:        2024-08-01
             Updated:        2024-08-01
             Ref:            https://rdap.arin.net/registry/autnum/53609
             
             
             OrgName:        ArcelorMittal Dofasco G.P.
             OrgId:          ACMAC
             Address:        1330 Burlington Street East
             City:           Hamilton
             StateProv:      ON
             PostalCode:     L8N 3J5
             Country:        CA
             RegDate:        2021-06-22
             Updated:        2025-08-20
             Ref:            https://rdap.arin.net/registry/entity/ACMAC
             
             
             OrgTechHandle: TIZZA-ARIN
             OrgTechName:   Tizzard, Mark 
             OrgTechPhone:  +1-289-407-9897 
             OrgTechEmail:  mark.tizzard@arcelormittal.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/TIZZA-ARIN
             
             OrgAbuseHandle: LLL24-ARIN
             OrgAbuseName:   Lilly, Louise Louise
             OrgAbusePhone:  +1-905-548-7200 
             OrgAbuseEmail:  LOUISE.LILLY@ARCELORMITTAL.COM
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/LLL24-ARIN
             
             OrgAbuseHandle: TIZZA-ARIN
             OrgAbuseName:   Tizzard, Mark 
             OrgAbusePhone:  +1-289-407-9897 
             OrgAbuseEmail:  mark.tizzard@arcelormittal.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/TIZZA-ARIN
             
             OrgTechHandle: LLL24-ARIN
             OrgTechName:   Lilly, Louise Louise
             OrgTechPhone:  +1-905-548-7200 
             OrgTechEmail:  LOUISE.LILLY@ARCELORMITTAL.COM
             OrgTechRef:    https://rdap.arin.net/registry/entity/LLL24-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.
             #