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 AS4521 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS4521\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: 4521
ASName: MIRACLE
ASHandle: AS4521
RegDate: 1995-04-07
Updated: 1998-02-11
Ref: https://rdap.arin.net/registry/autnum/4521
OrgName: Miracle Net Communication
OrgId: MNC-18
Address: 1580 Chapel Street
City: New Haven
StateProv: CT
PostalCode: 06511
Country: US
RegDate: 1995-04-07
Updated: 2012-10-10
Ref: https://rdap.arin.net/registry/entity/MNC-18
OrgTechHandle: MP1946-ARIN
OrgTechName: Micro-Net Hostmaster
OrgTechPhone: +1-203-619-0818
OrgTechEmail: hostmaster@micro-net.net
OrgTechRef: https://rdap.arin.net/registry/entity/MP1946-ARIN
OrgAbuseHandle: MP1946-ARIN
OrgAbuseName: Micro-Net Hostmaster
OrgAbusePhone: +1-203-619-0818
OrgAbuseEmail: hostmaster@micro-net.net
OrgAbuseRef: https://rdap.arin.net/registry/entity/MP1946-ARIN
RTechHandle: MP1946-ARIN
RTechName: Micro-Net Hostmaster
RTechPhone: +1-203-619-0818
RTechEmail: hostmaster@micro-net.net
RTechRef: https://rdap.arin.net/registry/entity/MP1946-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.
#