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 AS4099 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS4099\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: 4065 - 4125
ASName: DNIC-ASBLK-04065-04125
ASHandle: AS4065
RegDate: 1994-12-01
Updated: 2011-08-24
Ref: https://rdap.arin.net/registry/autnum/4065
OrgName: Headquarters, USAISC
OrgId: HEADQU-3
Address: NETC-ANC CONUS TNOSC
City: Fort Huachuca
StateProv: AZ
PostalCode: 85613
Country: US
RegDate: 1990-03-26
Updated: 2025-03-13
Ref: https://rdap.arin.net/registry/entity/HEADQU-3
OrgTechHandle: REGIS10-ARIN
OrgTechName: Registration
OrgTechPhone: +1-844-347-2457
OrgTechEmail: disa.columbus.ns.mbx.arin-registrations@mail.mil
OrgTechRef: https://rdap.arin.net/registry/entity/REGIS10-ARIN
OrgAbuseHandle: REGIS10-ARIN
OrgAbuseName: Registration
OrgAbusePhone: +1-844-347-2457
OrgAbuseEmail: disa.columbus.ns.mbx.arin-registrations@mail.mil
OrgAbuseRef: https://rdap.arin.net/registry/entity/REGIS10-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.
#