This AS is not currently used to announce prefixes in the global routing table, nor is it used as a visible transit AS.
whois: 402332
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
OrgNOCHandle: SNCLA-ARIN
OrgNOCName: SNC-Lavalin Inc
OrgNOCPhone: +1-514-393-8000
OrgNOCEmail: paul.mead@atkinsrealis.com
OrgNOCRef: https://rdap.arin.net/registry/entity/SNCLA-ARIN
OrgRoutingHandle: SNCLA-ARIN
OrgRoutingName: SNC-Lavalin Inc
OrgRoutingPhone: +1-514-393-8000
OrgRoutingEmail: paul.mead@atkinsrealis.com
OrgRoutingRef: https://rdap.arin.net/registry/entity/SNCLA-ARIN
OrgDNSHandle: SNCLA-ARIN
OrgDNSName: SNC-Lavalin Inc
OrgDNSPhone: +1-514-393-8000
OrgDNSEmail: paul.mead@atkinsrealis.com
OrgDNSRef: https://rdap.arin.net/registry/entity/SNCLA-ARIN
OrgAbuseHandle: SNCLA-ARIN
OrgAbuseName: SNC-Lavalin Inc
OrgAbusePhone: +1-514-393-8000
OrgAbuseEmail: paul.mead@atkinsrealis.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/SNCLA-ARIN
OrgTechHandle: SNCLA-ARIN
OrgTechName: SNC-Lavalin Inc
OrgTechPhone: +1-514-393-8000
OrgTechEmail: paul.mead@atkinsrealis.com
OrgTechRef: 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.
#