ASN AS20437 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS20437?

AS20437 is listed under Nationwide Mutual Insurance Company.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS20437 Nationwide Mutual Insurance Company

ASN Lookup Tool

Nationwide Mutual Insurance Company nationwide.com

US 4 Routes

AS Data

AS20437

AS20437 – Nationwide Mutual Insurance Company

AS Number	20437
AS Name	AS20437
Organization	Nationwide Mutual Insurance Company(nmi-20)
Country	US
Website	nationwide.com
Number of IPv4 Routes	4
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2001-05-08

ASN Intelligence API for production workflows

Use ASN data for AS20437 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
155.188.0.0/23	AS20437	Nationwide Mutual Insurance Company	Nationwide Mutual Insurance Company	512
155.188.0.0/24	AS20437	Nationwide Mutual Insurance Company	Nationwide Mutual Insurance Company	256
204.145.192.0/23	AS20437	Nationwide Mutual Insurance Company	FARMLAND INSURANCE COMPANIES	512
204.145.192.0/24	AS20437	Nationwide Mutual Insurance Company	FARMLAND INSURANCE COMPANIES	256

Raw Whois Response

#
# 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


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

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

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.
#

Parsed Whois Response

Peers

AS Number	Description	Country
AS701	Verizon Business/UUnet	US
AS701	Verizon Business	US

Upstreams

AS Number	Description	Country
AS701	Verizon Business	US