This AS is not currently used to announce prefixes in the global routing table, nor is it used as a visible transit AS.
whois: 402609
IANA has recorded AS5711 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS5711\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: 5711
ASName: CYBER2
ASHandle: AS5711
RegDate: 1995-09-06
Updated: 1995-09-06
Ref: https://rdap.arin.net/registry/autnum/5711
OrgName: CyberStream Information Services, Inc.
OrgId: CIS-228
Address: 6080 Young Street, Suite 203
City: Halifax
StateProv: NS
PostalCode: B3K 5L2
Country: CA
RegDate: 1995-09-06
Updated: 2016-01-13
Ref: https://rdap.arin.net/registry/entity/CIS-228
OrgTechHandle: CF186-ARIN
OrgTechName: Forgeron, Christopher Sean
OrgTechPhone: +1-902-455-5169
OrgTechEmail: cforger@aait.com
OrgTechRef: https://rdap.arin.net/registry/entity/CF186-ARIN
OrgAbuseHandle: CF186-ARIN
OrgAbuseName: Forgeron, Christopher Sean
OrgAbusePhone: +1-902-455-5169
OrgAbuseEmail: cforger@aait.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/CF186-ARIN
RTechHandle: CF186-ARIN
RTechName: Forgeron, Christopher Sean
RTechPhone: +1-902-455-5169
RTechEmail: cforger@aait.com
RTechRef: https://rdap.arin.net/registry/entity/CF186-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.
#