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AS398331 1st Financial Bank USA

Q: Why is WHOIS data shown for an ASN?

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

ASN Lookup Tool

1st Financial Bank USA 1fbusa.com

US 1 Routes

AS Data

AS398331

AS398331 – 1st Financial Bank USA

AS Number	398331
AS Name	1FBUSA-PROD
Organization	1st Financial Bank USA(1fbu)
Country	US
Website	1fbusa.com
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2020-04-28

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Use ASN data for AS398331 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
63.151.52.0/24	AS398331	1st Financial Bank USA	1st Financial Bank USA	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:       398331
ASName:         1FBUSA-PROD
ASHandle:       AS398331
RegDate:        2020-04-28
Updated:        2020-04-28    
Ref:            https://rdap.arin.net/registry/autnum/398331


OrgName:        1st Financial Bank USA
OrgId:          1FBU
Address:        363 West Anchor Drive
City:           Dakota Dunes
StateProv:      SD
PostalCode:     57049
Country:        US
RegDate:        2005-05-09
Updated:        2018-05-21
Ref:            https://rdap.arin.net/registry/entity/1FBU


OrgTechHandle: RIZZO1-ARIN
OrgTechName:   Rizzo, Ted 
OrgTechPhone:  +1-605-232-6792 
OrgTechEmail:  trizzo@1fbusa.com
OrgTechRef:    https://rdap.arin.net/registry/entity/RIZZO1-ARIN

OrgTechHandle: NETWO862-ARIN
OrgTechName:   Network Support
OrgTechPhone:  +1-605-232-6792 
OrgTechEmail:  NetworkSupport@1fbusa.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO862-ARIN

OrgAbuseHandle: NETWO862-ARIN
OrgAbuseName:   Network Support
OrgAbusePhone:  +1-605-232-6792 
OrgAbuseEmail:  NetworkSupport@1fbusa.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO862-ARIN

OrgTechHandle: RIZZO33-ARIN
OrgTechName:   Rizzo, Ted 
OrgTechPhone:  +1-605-232-6792 
OrgTechEmail:  trizzo@1fbusa.com
OrgTechRef:    https://rdap.arin.net/registry/entity/RIZZO33-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
AS209	CenturyLink Communications, LLC	US

Upstreams

AS Number	Description	Country
AS209	CenturyLink Communications, LLC	US

Frequently Asked Questions

What is ASN AS398331?

ASN AS398331 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS398331?

AS398331 is listed under 1st Financial Bank USA.

What do peers, upstreams, and downstreams mean?

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 included here?

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

How can I access full ASN table data?

This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.