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 AS20437 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS20437\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: 20437
ASName: AS20437
ASHandle: AS20437
RegDate: 2001-05-08
Updated: 2012-08-30
Ref: https://rdap.arin.net/registry/autnum/20437
OrgName: Nationwide Mutual Insurance Company
OrgId: NMI-20
Address: One Nationwide Plaza
City: Columbus
StateProv: OH
PostalCode: 43215
Country: US
RegDate: 2006-04-05
Updated: 2025-08-01
Ref: https://rdap.arin.net/registry/entity/NMI-20
OrgAbuseHandle: HO14-ORG-ARIN
OrgAbuseName: hostmaster
OrgAbusePhone: +1-614-249-6400
OrgAbuseEmail: IPADMIN@nationwide.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/HO14-ORG-ARIN
OrgTechHandle: HFG-ARIN
OrgTechName: Gasque, Hallie F
OrgTechPhone: +1-803-397-2931
OrgTechEmail: gasquh1@nationwide.com
OrgTechRef: https://rdap.arin.net/registry/entity/HFG-ARIN
OrgTechHandle: HO14-ORG-ARIN
OrgTechName: hostmaster
OrgTechPhone: +1-614-249-6400
OrgTechEmail: IPADMIN@nationwide.com
OrgTechRef: https://rdap.arin.net/registry/entity/HO14-ORG-ARIN
OrgNOCHandle: HO14-ORG-ARIN
OrgNOCName: hostmaster
OrgNOCPhone: +1-614-249-6400
OrgNOCEmail: IPADMIN@nationwide.com
OrgNOCRef: https://rdap.arin.net/registry/entity/HO14-ORG-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.
#