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.

AS399411 Froedtert South, Inc.

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

Froedtert South, Inc. froedtertsouth.com

US 3 Routes

AS Data

AS399411

AS399411 – Froedtert South, Inc.

AS Number	399411
AS Name	FSI-23
Organization	Froedtert South, Inc.(sch-1)
Country	US
Website	froedtertsouth.com
Number of IPv4 Routes	3
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2021-03-04

ASN Intelligence API for production workflows

Use ASN data for AS399411 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

Get ASN API Key ASN API Docs

IP Ranges

Route	Origin	Origin Name	ISP	# IPs
64.112.104.0/23	AS399411	Froedtert South, Inc.	Froedtert South, Inc.	512
64.112.105.0/24	AS399411	Froedtert South, Inc.	Froedtert South, Inc.	256
64.112.104.0/24	AS399411	Froedtert South, Inc.	Froedtert South, Inc.	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:       399411
ASName:         FSI-23
ASHandle:       AS399411
RegDate:        2021-03-04
Updated:        2021-03-04
Comment:        http://www.froedtertsouth.com    
Ref:            https://rdap.arin.net/registry/autnum/399411


OrgName:        Froedtert South, Inc.
OrgId:          SCH-1
Address:        6308 8th Avenue
City:           Kenosha
StateProv:      WI
PostalCode:     53143
Country:        US
RegDate:        1995-01-25
Updated:        2025-06-02
Ref:            https://rdap.arin.net/registry/entity/SCH-1


OrgTechHandle: PEACH12-ARIN
OrgTechName:   Peachey, Justin 
OrgTechPhone:  +1-262-656-3691 
OrgTechEmail:  justin.peachey@froedtertsouth.com
OrgTechRef:    https://rdap.arin.net/registry/entity/PEACH12-ARIN

OrgAbuseHandle: PEACH12-ARIN
OrgAbuseName:   Peachey, Justin 
OrgAbusePhone:  +1-262-656-3691 
OrgAbuseEmail:  justin.peachey@froedtertsouth.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/PEACH12-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
AS18683	Midwest Fiber Networks, LLC	US
AS7018	AT&T Enterprises, LLC	US

Upstreams

AS Number	Description	Country
AS18683	Midwest Fiber Networks, LLC	US
AS7018	AT&T Enterprises, LLC	US

Frequently Asked Questions

What is ASN AS399411?

ASN AS399411 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS399411?

AS399411 is listed under Froedtert South, Inc..

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.