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 AS4377 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS4377\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: 4377
ASName: SSSI-NETS
ASHandle: AS4377
RegDate: 1995-02-08
Updated: 1995-02-08
Ref: https://rdap.arin.net/registry/autnum/4377
OrgName: System Software Support, Inc.
OrgId: SSS-18
Address: 75 Main Street
City: Northfield
StateProv: MA
PostalCode: 30160
Country: US
RegDate: 1995-01-24
Updated: 2012-10-10
Ref: https://rdap.arin.net/registry/entity/SSS-18
OrgTechHandle: AB5201-ARIN
OrgTechName: Bialock, Andy
OrgTechPhone: +1-413-498-5001
OrgTechEmail: andy@3si.net
OrgTechRef: https://rdap.arin.net/registry/entity/AB5201-ARIN
OrgAbuseHandle: AB5201-ARIN
OrgAbuseName: Bialock, Andy
OrgAbusePhone: +1-413-498-5001
OrgAbuseEmail: andy@3si.net
OrgAbuseRef: https://rdap.arin.net/registry/entity/AB5201-ARIN
RTechHandle: AB5201-ARIN
RTechName: Bialock, Andy
RTechPhone: +1-413-498-5001
RTechEmail: andy@3si.net
RTechRef: https://rdap.arin.net/registry/entity/AB5201-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.
#