This AS is not currently used to announce prefixes in the global routing table, nor is it used as a visible transit AS.
whois: 402332
IANA has recorded AS3973 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS3973\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: 3973
ASName: AS-SPRINTLINK-NYSERN2
ASHandle: AS3973
RegDate: 1994-10-27
Updated: 1996-04-05
Ref: https://rdap.arin.net/registry/autnum/3973
OrgName: Sprint, Business Services Group
OrgId: SBSG
Address: 12502 Sunrise Valley Drive
City: Reston
StateProv: VA
PostalCode: 20196
Country: US
RegDate: 1994-10-27
Updated: 2011-09-24
Comment: For abuse issues please send email to ABUSE@SPRINT.NET
Comment: only.
Ref: https://rdap.arin.net/registry/entity/SBSG
OrgAbuseHandle: ARINS-ARIN
OrgAbuseName: arin-sprint-iprequest
OrgAbusePhone: +1-800-232-3458
OrgAbuseEmail: ip-req@sprint.net
OrgAbuseRef: https://rdap.arin.net/registry/entity/ARINS-ARIN
OrgTechHandle: ARINS-ARIN
OrgTechName: arin-sprint-iprequest
OrgTechPhone: +1-800-232-3458
OrgTechEmail: ip-req@sprint.net
OrgTechRef: https://rdap.arin.net/registry/entity/ARINS-ARIN
RTechHandle: SPRINT-NOC-ARIN
RTechName: IP Services
RTechPhone: +1-800-232-6895
RTechEmail: ipsa.noc@sprint.com
RTechRef: https://rdap.arin.net/registry/entity/SPRINT-NOC-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.
#