ASN AS1428 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS1428?

AS1428 is listed under DRW Holdings, LLC.

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.

AS1428 DRW Holdings, LLC | IPGeolocation.io

ASN Lookup Tool

DRW Holdings, LLC drwholdings.com

US 1 Routes

AS Data

AS1428

AS1428 – DRW Holdings, LLC

AS Number	1428
AS Name	DRW-HOLDINGS
Organization	DRW Holdings, LLC(drwho)
Country	US
Website	drwholdings.com
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2009-08-03

ASN Intelligence API for production workflows

Use ASN data for AS1428 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
204.75.143.0/24	AS1428	DRW Holdings, LLC	DRW Holdings, LLC	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:       1428
ASName:         DRW-HOLDINGS
ASHandle:       AS1428
RegDate:        2009-08-03
Updated:        2012-03-02
Comment:        Service Desk hours are M-F 7:30am - 5:00pm et.    
Ref:            https://rdap.arin.net/registry/autnum/1428


OrgName:        DRW Holdings, LLC
OrgId:          DRWHO
Address:        540 W Madison Suite 2500
City:           Chicago
StateProv:      IL
PostalCode:     60661
Country:        US
RegDate:        2009-02-17
Updated:        2025-07-10
Comment:        Standard hours are 7:30 AM to 6:30 PM ET M-F
Ref:            https://rdap.arin.net/registry/entity/DRWHO


OrgNOCHandle: NETWO4533-ARIN
OrgNOCName:   Network Admin
OrgNOCPhone:  +1-312-542-1242 
OrgNOCEmail:  networkgroup@drwholdings.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NETWO4533-ARIN

OrgTechHandle: NETWO4533-ARIN
OrgTechName:   Network Admin
OrgTechPhone:  +1-312-542-1242 
OrgTechEmail:  networkgroup@drwholdings.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO4533-ARIN

OrgAbuseHandle: NETWO4533-ARIN
OrgAbuseName:   Network Admin
OrgAbusePhone:  +1-312-542-1242 
OrgAbuseEmail:  networkgroup@drwholdings.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO4533-ARIN

OrgTechHandle: CLOUD170-ARIN
OrgTechName:   Cloud Admin
OrgTechPhone:  +1-312-542-1000 
OrgTechEmail:  cloud-rir-x-p-aaron-editor@drwcloud.com
OrgTechRef:    https://rdap.arin.net/registry/entity/CLOUD170-ARIN

RNOCHandle: TMA233-ARIN
RNOCName:   May, Trish 
RNOCPhone:  +1-312-542-3256 
RNOCEmail:  networkgroup@drwholdings.com
RNOCRef:    https://rdap.arin.net/registry/entity/TMA233-ARIN

RTechHandle: TMA233-ARIN
RTechName:   May, Trish 
RTechPhone:  +1-312-542-3256 
RTechEmail:  networkgroup@drwholdings.com
RTechRef:    https://rdap.arin.net/registry/entity/TMA233-ARIN

RAbuseHandle: TMA233-ARIN
RAbuseName:   May, Trish 
RAbusePhone:  +1-312-542-3256 
RAbuseEmail:  networkgroup@drwholdings.com
RAbuseRef:    https://rdap.arin.net/registry/entity/TMA233-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
AS3356	Level 3 Parent, LLC	US
AS6461	Zayo Bandwidth	US

Upstreams

AS Number	Description	Country
AS3356	Level 3 Parent, LLC	US
AS6461	Zayo Bandwidth	US