This AS is not currently used to announce prefixes in the global routing table, nor is it used as a visible transit AS.
whois: 402584
IANA has recorded AS4250 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS4250\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: 4250
ASName: ALENT-ASN-1
ASHandle: AS4250
RegDate: 1995-01-13
Updated: 2020-11-16
Ref: https://rdap.arin.net/registry/autnum/4250
OrgName: Alentus Corporation
OrgId: ALENT
Address: 120 Vantis Drive
Address: Suite 300
City: Aliso Viejo
StateProv: CA
PostalCode: 92656
Country: US
RegDate: 2008-04-21
Updated: 2020-11-16
Ref: https://rdap.arin.net/registry/entity/ALENT
OrgAbuseHandle: GNOC15-ARIN
OrgAbuseName: Global Network Operations Center
OrgAbusePhone: +1-888-890-8905
OrgAbuseEmail: netops@netuity.net
OrgAbuseRef: https://rdap.arin.net/registry/entity/GNOC15-ARIN
OrgTechHandle: GNOC15-ARIN
OrgTechName: Global Network Operations Center
OrgTechPhone: +1-888-890-8905
OrgTechEmail: netops@netuity.net
OrgTechRef: https://rdap.arin.net/registry/entity/GNOC15-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.
#