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 AS4597 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS4597\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: 4597
ASName: MILLIPORE
ASHandle: AS4597
RegDate: 1995-05-01
Updated: 1995-05-01
Ref: https://rdap.arin.net/registry/autnum/4597
OrgName: Millipore Corp.
OrgId: MILLIP-2
Address: 80 ASHBY ROAD
City: Bedford
StateProv: MA
PostalCode: 01730
Country: US
RegDate: 1995-05-01
Updated: 2012-10-10
Ref: https://rdap.arin.net/registry/entity/MILLIP-2
OrgAbuseHandle: PR198-ARIN
OrgAbuseName: Ram, Prabhu
OrgAbusePhone: +1-617-533-3124
OrgAbuseEmail: usrpr@bedford.millipore.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/PR198-ARIN
OrgTechHandle: PR198-ARIN
OrgTechName: Ram, Prabhu
OrgTechPhone: +1-617-533-3124
OrgTechEmail: usrpr@bedford.millipore.com
OrgTechRef: https://rdap.arin.net/registry/entity/PR198-ARIN
RTechHandle: PR198-ARIN
RTechName: Ram, Prabhu
RTechPhone: +1-617-533-3124
RTechEmail: usrpr@bedford.millipore.com
RTechRef: https://rdap.arin.net/registry/entity/PR198-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.
#