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 AS3987 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS3987\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: 3977 - 3992
ASName: UTELFLA
ASHandle: AS3977
RegDate: 1994-11-04
Updated: 1994-11-04
Ref: https://rdap.arin.net/registry/autnum/3977
OrgName: Sprint/United Telephone-Florida
OrgId: SPRINT-71
Address: PO Box 165000, MC 4025
City: Altamonte Springs
StateProv: FL
PostalCode: 32789
Country: US
RegDate: 1994-11-04
Updated: 2012-10-10
Ref: https://rdap.arin.net/registry/entity/SPRINT-71
OrgAbuseHandle: BH216-ARIN
OrgAbuseName: Howlett, Brian
OrgAbusePhone: +1-407-830-3500
OrgAbuseEmail: howlettb@utelfla.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/BH216-ARIN
OrgTechHandle: BH216-ARIN
OrgTechName: Howlett, Brian
OrgTechPhone: +1-407-830-3500
OrgTechEmail: howlettb@utelfla.com
OrgTechRef: https://rdap.arin.net/registry/entity/BH216-ARIN
RTechHandle: BH216-ARIN
RTechName: Howlett, Brian
RTechPhone: +1-407-830-3500
RTechEmail: howlettb@utelfla.com
RTechRef: https://rdap.arin.net/registry/entity/BH216-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.
#