This AS is not currently used to announce prefixes in the global routing table, nor is it used as a visible transit AS.
whois: 402603
IANA has recorded AS53389 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS53389\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: 53389
ASName: SSP
ASHandle: AS53389
RegDate: 2010-01-08
Updated: 2023-12-14
Ref: https://rdap.arin.net/registry/autnum/53389
OrgName: Studsvik Scandpower Inc
OrgId: STUDSV-1
Address: 1070 Riverwalk Dr.
Address: Suite 150
City: Idaho Falls
StateProv: ID
PostalCode: 83402
Country: US
RegDate: 2000-02-11
Updated: 2025-12-16
Ref: https://rdap.arin.net/registry/entity/STUDSV-1
OrgTechHandle: OYARZ1-ARIN
OrgTechName: Oyarzun, Christian
OrgTechPhone: +1-704-589-2454
OrgTechEmail: christian.oyarzun@studsvik.com
OrgTechRef: https://rdap.arin.net/registry/entity/OYARZ1-ARIN
OrgAbuseHandle: ABUSE2508-ARIN
OrgAbuseName: Abuse Department
OrgAbusePhone: +1-704-589-2454
OrgAbuseEmail: abuse@studsvikscandpower.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE2508-ARIN
OrgAbuseHandle: OYARZ1-ARIN
OrgAbuseName: Oyarzun, Christian
OrgAbusePhone: +1-704-589-2454
OrgAbuseEmail: christian.oyarzun@studsvik.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/OYARZ1-ARIN
RTechHandle: OYARZ1-ARIN
RTechName: Oyarzun, Christian
RTechPhone: +1-704-589-2454
RTechEmail: christian.oyarzun@studsvik.com
RTechRef: https://rdap.arin.net/registry/entity/OYARZ1-ARIN
RAbuseHandle: ABUSE2508-ARIN
RAbuseName: Abuse Department
RAbusePhone: +1-704-589-2454
RAbuseEmail: abuse@studsvikscandpower.com
RAbuseRef: https://rdap.arin.net/registry/entity/ABUSE2508-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.
#