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AS21794 Ameren Corp. | IPGeolocation.io

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

Ameren Corp. ameren.com

US 2 Routes

AS Data

AS21794

AS21794 – Ameren Corp.

AS Number	21794
AS Name	AMEREN-AS2
Organization	Ameren Corp.(ameren-2)
Country	US
Website	ameren.com
Number of IPv4 Routes	2
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2001-06-21

ASN Intelligence API for production workflows

Use ASN data for AS21794 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
192.189.96.0/24	AS21794	Ameren Corp.	Ameren Corp.	256
192.189.97.0/24	AS21794	Ameren Corp.	Ameren Corp.	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:       21794
ASName:         AMEREN-AS2
ASHandle:       AS21794
RegDate:        2001-06-21
Updated:        2012-03-20    
Ref:            https://rdap.arin.net/registry/autnum/21794


OrgName:        Ameren Corp.
OrgId:          AMEREN-2
Address:        1901 Chouteau Ave.
City:           St. Louis
StateProv:      MO
PostalCode:     63103
Country:        US
RegDate:        2002-02-21
Updated:        2013-02-06
Ref:            https://rdap.arin.net/registry/entity/AMEREN-2


OrgAbuseHandle: AIR5-ARIN
OrgAbuseName:   Ameren Internet Registry
OrgAbusePhone:  +1-314-554-3883 
OrgAbuseEmail:  arin@ameren.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/AIR5-ARIN

OrgAbuseHandle: NOC2020-ARIN
OrgAbuseName:   Network Operations Center
OrgAbusePhone:  +1-314-206-0662 
OrgAbuseEmail:  noc@ameren.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NOC2020-ARIN

OrgNOCHandle: NOC2020-ARIN
OrgNOCName:   Network Operations Center
OrgNOCPhone:  +1-314-206-0662 
OrgNOCEmail:  noc@ameren.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC2020-ARIN

OrgTechHandle: AIR5-ARIN
OrgTechName:   Ameren Internet Registry
OrgTechPhone:  +1-314-554-3883 
OrgTechEmail:  arin@ameren.com
OrgTechRef:    https://rdap.arin.net/registry/entity/AIR5-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
AS40264	Charter Communications LLC	US
AS7018	AT&T Enterprises, LLC	US

Upstreams

AS Number	Description	Country
AS40264	Charter Communications LLC	US
AS7018	AT&T Enterprises, LLC	US

Frequently Asked Questions

What is ASN AS21794?

ASN AS21794 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21794?

AS21794 is listed under Ameren Corp..

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.