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 AS4203 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS4203\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: 4203
ASName: TGF-TIS
ASHandle: AS4203
RegDate: 1995-01-05
Updated: 1995-01-05
Ref: https://rdap.arin.net/registry/autnum/4203
OrgName: Together Foundation
OrgId: TOGETH
Address: 130 S. Willard Street
City: Burlington
StateProv: VT
PostalCode: 05401
Country: US
RegDate: 1992-09-21
Updated: 2011-09-24
Ref: https://rdap.arin.net/registry/entity/TOGETH
OrgAbuseHandle: TN-IS-ARIN
OrgAbuseName: Earthlink Inc
OrgAbusePhone: +1-626-296-2400
OrgAbuseEmail: togetherDNS@mindspring.net
OrgAbuseRef: https://rdap.arin.net/registry/entity/TN-IS-ARIN
OrgTechHandle: TN-IS-ARIN
OrgTechName: Earthlink Inc
OrgTechPhone: +1-626-296-2400
OrgTechEmail: togetherDNS@mindspring.net
OrgTechRef: https://rdap.arin.net/registry/entity/TN-IS-ARIN
RTechHandle: JM532-ARIN
RTechName: MacIntyre, James
RTechPhone: +1-802-862-2030
RTechEmail: jim@together.net
RTechRef: https://rdap.arin.net/registry/entity/JM532-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.
#