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 AS3599 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS3599\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: 3599
ASName: BINCNET
ASHandle: AS3599
RegDate: 1994-05-18
Updated: 2004-12-21
Ref: https://rdap.arin.net/registry/autnum/3599
OrgName: CDW Technologies LLC
OrgId: BINC
Address: 5525 Nobel Drive
City: Madison
StateProv: WI
PostalCode: 53711
Country: US
RegDate: 1994-05-18
Updated: 2024-11-25
Ref: https://rdap.arin.net/registry/entity/BINC
ReferralServer: rwhois://rwhois.binc.net:4321
OrgAbuseHandle: NETWO712-ARIN
OrgAbuseName: Network Abuse
OrgAbusePhone: +1-608-288-4000
OrgAbuseEmail: abuse@binc.net
OrgAbuseRef: https://rdap.arin.net/registry/entity/NETWO712-ARIN
OrgTechHandle: JS180-ARIN
OrgTechName: Stahr, James
OrgTechPhone: +1-608-288-4000
OrgTechEmail: james.stahr@cdw.com
OrgTechRef: https://rdap.arin.net/registry/entity/JS180-ARIN
RTechHandle: JS180-ARIN
RTechName: Stahr, James
RTechPhone: +1-608-288-4000
RTechEmail: james.stahr@cdw.com
RTechRef: https://rdap.arin.net/registry/entity/JS180-ARIN
RAbuseHandle: NETWO712-ARIN
RAbuseName: Network Abuse
RAbusePhone: +1-608-288-4000
RAbuseEmail: abuse@binc.net
RAbuseRef: https://rdap.arin.net/registry/entity/NETWO712-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.
#
Found a referral to rwhois.binc.net:4321.
%rwhois V-1.5:003eff:00 rwhois.binc.net (by Network Solutions, Inc. V-1.5.9.6)
%error 230 No Objects Found