ASN AS40203 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS40203?

AS40203 is listed under GROWMARK, Inc..

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.

AS40203 GROWMARK, Inc. | IPGeolocation.io

ASN Lookup Tool

GROWMARK, Inc. growmark.com

US 1 Routes

AS Data

AS40203

AS40203 – GROWMARK, Inc.

AS Number	40203
AS Name	GROWMARK
Organization	GROWMARK, Inc.(growm-4)
Country	US
Website	growmark.com
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2006-08-17

ASN Intelligence API for production workflows

Use ASN data for AS40203 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
135.84.128.0/22	AS40203	GROWMARK, Inc.	GROWMARK, Inc.	1024

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:       40203
ASName:         GROWMARK
ASHandle:       AS40203
RegDate:        2006-08-17
Updated:        2019-10-10    
Ref:            https://rdap.arin.net/registry/autnum/40203


OrgName:        GROWMARK, Inc.
OrgId:          GROWM-4
Address:        1705 Towanda Avenue
Address:        Network Services
City:           Bloomington
StateProv:      IL
PostalCode:     61701
Country:        US
RegDate:        2006-08-04
Updated:        2024-11-21
Ref:            https://rdap.arin.net/registry/entity/GROWM-4


OrgAbuseHandle: EDWAR14-ARIN
OrgAbuseName:   Burton, Edward A.
OrgAbusePhone:  +1-309-531-9110 
OrgAbuseEmail:  eburton@growmark.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/EDWAR14-ARIN

OrgTechHandle: EDWAR14-ARIN
OrgTechName:   Burton, Edward A.
OrgTechPhone:  +1-309-531-9110 
OrgTechEmail:  eburton@growmark.com
OrgTechRef:    https://rdap.arin.net/registry/entity/EDWAR14-ARIN

OrgTechHandle: BARON78-ARIN
OrgTechName:   Baron, Trevor 
OrgTechPhone:  +1-309-557-6820 
OrgTechEmail:  tbaron@growmark.com
OrgTechRef:    https://rdap.arin.net/registry/entity/BARON78-ARIN

OrgTechHandle: FISHE309-ARIN
OrgTechName:   Fisher, Eric 
OrgTechPhone:  +1-309-557-6271 
OrgTechEmail:  efisher@growmark.com
OrgTechRef:    https://rdap.arin.net/registry/entity/FISHE309-ARIN

RTechHandle: EDWAR14-ARIN
RTechName:   Burton, Edward A.
RTechPhone:  +1-309-531-9110 
RTechEmail:  eburton@growmark.com
RTechRef:    https://rdap.arin.net/registry/entity/EDWAR14-ARIN

RTechHandle: BARON78-ARIN
RTechName:   Baron, Trevor 
RTechPhone:  +1-309-557-6820 
RTechEmail:  tbaron@growmark.com
RTechRef:    https://rdap.arin.net/registry/entity/BARON78-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
AS33491	Comcast Cable Communications, LLC	US
AS7029	Windstream Communications LLC	US
AS701	Verizon Business/UUnet	US
AS701	Verizon Business	US

Upstreams

AS Number	Description	Country
AS33491	Comcast Cable Communications, LLC	US
AS7029	Windstream Communications LLC	US
AS701	Verizon Business	US