Report for 19103

Name

SNC-LAVALIN-CONSTRUCTORS-INC - ATKINSREALIS CONSTRUCTION (USA) 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 AS4637) 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.

19103 NEPCO - National Energy Production Corporation

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS1239    SPRINTLINK - Sprint

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
17471 AS19103  ORIGIN  Originate:        512 /23.00  Transit:          0 /0.00  NEPCO - National Energy Production Corporation

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       %
12641 AS19103 NEPCO - National Energy Production Corpo      2      0      0      2      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  63.124.138.0/24      4637 3491 3561 1239 19103   
  63.164.151.0/24      4637 3491 3561 1239 19103   

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

AS19103   2 More Specifics   2 Total Advertisements   NEPCO - National Energy Production Corporation
    63.124.138.0/24               63.64.0.0/10
    63.164.151.0/24               63.160.0.0/12

Whois Entry

whois: 402603

IANA has recorded AS19103 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS19103\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:       19103
             ASName:         SNC-LAVALIN-CONSTRUCTORS-INC
             ASHandle:       AS19103
             RegDate:        2000-11-20
             Updated:        2012-03-02
             Ref:            https://rdap.arin.net/registry/autnum/19103
             
             
             OrgName:        ATKINSREALIS CONSTRUCTION (USA) INC
             OrgId:          SNCLA
             Address:        19015 North Creek Parkway
             Address:        Suite 300
             City:           Bothell
             StateProv:      WA
             PostalCode:     98011
             Country:        US
             RegDate:        2005-06-28
             Updated:        2025-05-08
             Ref:            https://rdap.arin.net/registry/entity/SNCLA
             
             
             OrgDNSHandle: SNCLA-ARIN
             OrgDNSName:   SNC-Lavalin Inc
             OrgDNSPhone:  +1-514-393-8000 
             OrgDNSEmail:  Patrick.Santiago@atkinsrealis.com
             OrgDNSRef:    https://rdap.arin.net/registry/entity/SNCLA-ARIN
             
             OrgAbuseHandle: SNCLA-ARIN
             OrgAbuseName:   SNC-Lavalin Inc
             OrgAbusePhone:  +1-514-393-8000 
             OrgAbuseEmail:  Patrick.Santiago@atkinsrealis.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/SNCLA-ARIN
             
             OrgTechHandle: SNCLA-ARIN
             OrgTechName:   SNC-Lavalin Inc
             OrgTechPhone:  +1-514-393-8000 
             OrgTechEmail:  Patrick.Santiago@atkinsrealis.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/SNCLA-ARIN
             
             OrgNOCHandle: SNCLA-ARIN
             OrgNOCName:   SNC-Lavalin Inc
             OrgNOCPhone:  +1-514-393-8000 
             OrgNOCEmail:  Patrick.Santiago@atkinsrealis.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/SNCLA-ARIN
             
             OrgRoutingHandle: SNCLA-ARIN
             OrgRoutingName:   SNC-Lavalin Inc
             OrgRoutingPhone:  +1-514-393-8000 
             OrgRoutingEmail:  Patrick.Santiago@atkinsrealis.com
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/SNCLA-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.
             #