ASN AS4155 is an Autonomous System Number used to identify a network for BGP internet routing.

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.

AS4155 USDA | IPGeolocation.io

ASN Lookup Tool

USDA usda.gov

US 25 Routes

AS Data

AS4155

AS4155 – USDA

AS Number	4155
AS Name	USDA-1
Organization	USDA(usda-3)
Country	US
Website	usda.gov
Number of IPv4 Routes	23
Number of IPv6 Routes	2
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	1994-12-15

ASN Intelligence API for production workflows

Use ASN data for AS4155 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

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
151.121.0.0/16	AS4155	USDA	USDA	65536
192.131.1.0/24	AS4155	USDA	USDA	256
162.79.0.0/16	AS4155	USDA	USDA	65536
199.141.126.0/24	AS4155	USDA	USDA	256
192.73.224.0/24	AS4155	USDA	USDA	256
2600:12f0::/28	AS4155	USDA	USDA	~1×10³⁰
147.49.0.0/16	AS4155	USDA	USDA	65536
150.118.0.0/15	AS4155	USDA	USDA	131072
170.144.0.0/16	AS4155	USDA	USDA	65536
192.84.74.0/24	AS4155	USDA	USDA	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:       4151 - 4157
ASName:         USDA-1
ASHandle:       AS4151
RegDate:        1994-12-15
Updated:        2001-01-03    
Ref:            https://rdap.arin.net/registry/autnum/4151


OrgName:        USDA
OrgId:          USDA-3
Address:        Suite 133, Building A
Address:        2150 Centre Ave
City:           Fort Collins
StateProv:      CO
PostalCode:     80526
Country:        US
RegDate:        1993-09-08
Updated:        2024-11-25
Ref:            https://rdap.arin.net/registry/entity/USDA-3


OrgTechHandle: ZU20-ARIN
OrgTechName:   USDA - Office of the ChiefInformation Officer
OrgTechPhone:  +1-866-873-2926 
OrgTechEmail:  duty.officer@usda.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/ZU20-ARIN

OrgAbuseHandle: SECUR27-ARIN
OrgAbuseName:   Security Abuse
OrgAbusePhone:  +1-866-873-2926 
OrgAbuseEmail:  abuse@usda.gov
OrgAbuseRef:    https://rdap.arin.net/registry/entity/SECUR27-ARIN

OrgAbuseHandle: ZU20-ARIN
OrgAbuseName:   USDA - Office of the ChiefInformation Officer
OrgAbusePhone:  +1-866-873-2926 
OrgAbuseEmail:  duty.officer@usda.gov
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ZU20-ARIN

RTechHandle: ZU20-ARIN
RTechName:   USDA - Office of the ChiefInformation Officer
RTechPhone:  +1-866-873-2926 
RTechEmail:  duty.officer@usda.gov
RTechRef:    https://rdap.arin.net/registry/entity/ZU20-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
AS6223	CenturyLink Communications, LLC	US
AS4296	CenturyLink Communications, LLC	US
AS4297	CenturyLink Communications, LLC	US
AS6224	CenturyLink Communications, LLC	US

Upstreams

AS Number	Description	Country
AS6223	CenturyLink Communications, LLC	US
AS4296	CenturyLink Communications, LLC	US
AS4297	CenturyLink Communications, LLC	US
AS6224	CenturyLink Communications, LLC	US