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 AS54140 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS54140\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: 54140
ASName: CISCO-OTT
ASHandle: AS54140
RegDate: 2018-10-29
Updated: 2023-09-12
Ref: https://rdap.arin.net/registry/autnum/54140
OrgName: CISCO SYSTEMS, INC.
OrgId: CS-2831
Address: 251 LITTLE FALLS DRIVE
City: WILMINGTON
StateProv: DE
PostalCode: 19808
Country: US
RegDate: 2023-06-07
Updated: 2024-02-16
Ref: https://rdap.arin.net/registry/entity/CS-2831
OrgNOCHandle: GATC-ARIN
OrgNOCName: GIS ARIN Technical Contact
OrgNOCPhone: +1-408-526-8888
OrgNOCEmail: cidr-block-admins@cisco.com
OrgNOCRef: https://rdap.arin.net/registry/entity/GATC-ARIN
OrgTechHandle: GATC-ARIN
OrgTechName: GIS ARIN Technical Contact
OrgTechPhone: +1-408-526-8888
OrgTechEmail: cidr-block-admins@cisco.com
OrgTechRef: https://rdap.arin.net/registry/entity/GATC-ARIN
OrgAbuseHandle: CISCO6-ARIN
OrgAbuseName: Cisco CSIRT
OrgAbusePhone: +1-408-527-3227
OrgAbuseEmail: csirt-notify@cisco.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/CISCO6-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.
#