166.2.0.0/15

AS4155 · USDA

Need more data or want to access it via API or data downloads? Sign up to get free access

Summary

Country	United States
Domain	usda.gov
ASN	AS4155
Registry	ARIN
ID	NETBLK-USFS

WHOIS Details

NetHandle:      NET-166-2-0-0-1
OrgID:          USDA-3-Z
Parent:         NET-166-0-0-0-0
NetName:        NETBLK-USFS
NetRange:       166.2.0.0 - 166.7.255.255
NetType:        allocation
RegDate:        1993-11-03
Updated:        2024-04-25
Source:         ARIN


OrgID:          USDA-3-Z
OrgName:        USDA
CanAllocate:    
Street:         Suite 133, Building A
Street:         2150 Centre Ave
City:           Fort Collins
State/Prov:     CO
Country:        US
PostalCode:     80526
RegDate:        2024-04-10
Updated:        2024-04-10
OrgAdminHandle: ZU20-ARIN
OrgTechHandle:  ZU20-ARIN
OrgAbuseHandle: SECUR27-ARIN
OrgAbuseHandle: ZU20-ARIN
Source:         ARIN


POCHandle:      SECUR27-ARIN
IsRole:         Y
LastName:       Security Abuse
FirstName:      
Street:         2150 Centre Ave. Building A
City:           Fort Collins
State/Prov:     CO
Country:        US
PostalCode:     80526
RegDate:        2008-10-08
Updated:        2018-11-29
OfficePhone:    +1-866-873-2926
Mailbox:        abuse@usda.gov
Source:         ARIN


POCHandle:      ZU20-ARIN
IsRole:         Y
LastName:       USDA - Office of the ChiefInformation Officer
FirstName:      
Street:         2150 Centre Ave. Building A Suite 133
City:           Fort Collins
State/Prov:     CO
Country:        US
PostalCode:     80526
RegDate:        2000-06-16
Updated:        2025-06-27
OfficePhone:    +1-866-873-2926
Mailbox:        duty.officer@usda.gov
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 166.0.0.0/8

Range	ASN	Company	Num of IPs
166.104.0.0/16	AS9321	Hanyang University	65,536
166.56.0.0/16	AS3372	Verizon Business	65,536
166.91.0.0/16	AS14072	District of Columbia Public Schools	65,536
166.99.0.0/16	AS11719	Eaton Corporation	65,536
166.74.0.0/16	AS16509	Amazon.com, Inc.	65,536
166.90.0.0/16	AS3257	Level 3 Parent, LLC	65,536
166.89.0.0/16	AS13918	City of Tucson	65,536
166.87.0.0/16	AS5080	Saudi Arabian Oil Company	65,536
166.117.0.0/16	AS16509	Amazon.com, Inc.	65,536
166.69.0.0/16	AS19773	Motorola MNIC	65,536
166.56.0.0/16	AS3371	Verizon Business	65,536
166.211.0.0/16	AS22394	Verizon Business	65,536
166.90.0.0/16	AS3356	Level 3 Parent, LLC	65,536
166.84.0.0/16	AS2033	Panix	65,536
166.58.0.0/16	AS3371	Verizon Business	65,536
166.92.0.0/16	AS16509	Amazon.com, Inc.	65,536
166.80.0.0/16	AS16509	Amazon.com, Inc.	65,536
166.123.0.0/16	AS13506	United States Department of the Treasury	65,536
166.58.0.0/16	AS3372	Verizon Business	65,536
166.111.0.0/16	AS4538	Tsinghua University	65,536
166.100.0.0/16	AS2687	AT&T Japan K.K.	65,536
166.211.0.0/16	AS6167	Verizon Business	65,536
166.70.0.0/16	AS6315	XMission, L.C.	65,536
166.91.0.0/16	AS33084	District of Columbia Public Schools	65,536
166.238.0.0/16	AS26611	COMUNICACIÓN CELULAR S.A. COMCEL S.A.	65,536
166.122.0.0/16	AS6360	University of Hawaii	65,536
166.102.0.0/16	AS7029	Windstream Communications LLC	65,536
166.20.0.0/16	AS243	L3Harris Technologies, Inc.	65,536
166.93.0.0/16	AS26914	Synoptek, LLC	65,536
166.94.0.0/16	AS3926	Fairfax County Government	65,536
166.19.0.0/16	AS33425	CoreWeave, Inc	65,536
166.82.0.0/16	AS7029	Windstream Communications LLC	65,536
166.72.0.0/16	AS7018	AT&T Enterprises, LLC	65,536
166.58.0.0/16	AS3377	Verizon Business	65,536
166.114.128.0/17	AS6568	EMPRESA NACIONAL DE TELECOMUNICACIONES SOCIEDAD ANONIMA	32,768
166.49.0.0/17	AS3561	CenturyLink Communications, LLC	32,768
166.62.128.0/17	AS5769	Videotron Ltee	32,768
166.48.0.0/17	AS396338	Altima Telecom	32,768
166.49.128.0/17	AS5400	communications networking services Private Unlimited Company	32,768
166.114.64.0/18	AS6568	EMPRESA NACIONAL DE TELECOMUNICACIONES SOCIEDAD ANONIMA	16,384
166.108.128.0/18	AS35077	Netwo SAS	16,384
166.113.64.0/18	AS53449	OEC Fiber	16,384
166.63.128.0/19	AS3561	CenturyLink Communications, LLC	8,192
166.114.32.0/19	AS6568	EMPRESA NACIONAL DE TELECOMUNICACIONES SOCIEDAD ANONIMA	8,192
166.113.32.0/19	AS13370	Ziply Fiber	8,192
166.63.192.0/19	AS1273	Vodafone Americas	8,192
166.113.0.0/19	AS19870	Cherry Creek School District #5	8,192
166.108.0.0/19	AS16509	Amazon.com, Inc.	8,192
166.63.160.0/19	AS1273	Vodafone Americas	8,192
166.93.0.0/20	AS26914	Synoptek Pittsford DC	4,096

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
52.89.199.63	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
179.211.35.223	AS28573 Claro NXT Telecomunicacoes Ltda	`9.03ms` from Curitiba, BR
171.240.220.47	AS7552 Viettel Group	`1.43ms` from Ho Chi Minh City, VN
156.59.221.47	AS21859 Zenlayer Inc	`0.43ms` from Melbourne, AU
180.196.136.191	AS18126 Chubu Telecommunications Company, Inc.	`4.40ms` from Osaka, JP
24.2.135.127	AS7922 Comcast Cable Communications, LLC	`6.83ms` from Providence, US
112.234.216.31	AS4837 CHINA UNICOM China169 Backbone	`9.00ms` from Qingdao, CN
179.158.10.31	AS28573 Claro NXT Telecomunicacoes Ltda	`1.53ms` from Rio de Janeiro, BR
112.147.66.63	AS17858 LG POWERCOMM	`2.02ms` from Seoul, KR
34.47.91.111	AS396982 Google LLC	`0.10ms` from Seoul, KR
3.25.112.223	AS16509 Amazon.com, Inc.	`0.10ms` from Sydney, AU
70.39.148.31	AS54641 InMotion Hosting, Inc.	`0.31ms` from Ashburn, US
54.190.146.63	AS16509 Amazon.com, Inc.	`0.17ms` from Boardman, US
115.114.109.95	AS4755 TATA Communications formerly VSNL is Leading ISP	`0.69ms` from Chennai, IN
189.72.64.143	AS8167 V tal	`7.54ms` from Curitiba, BR
74.249.142.143	AS8075 Microsoft Corporation	`0.16ms` from Des Moines, US
216.135.89.143	AS4261 Intermart Inc.	`3.62ms` from Indianapolis, US
99.10.74.255	AS7018 AT&T Enterprises, LLC	`3.08ms` from Los Angeles, US
157.241.85.95	AS16509 Amazon.com, Inc.	`0.11ms` from Manama, BH
189.144.148.47	AS8151 UNINET	`1.09ms` from Mexico City, MX
94.32.247.255	AS8612 Tiscali Italia S.P.A.	`10.08ms` from Milan, IT
177.56.240.255	AS22085 Claro S/A	`16.59ms` from Rio de Janeiro, BR
54.241.176.47	AS16509 Amazon.com, Inc.	`0.17ms` from San Jose, US
13.48.192.255	AS16509 Amazon.com, Inc.	`1.10ms` from Stockholm, SE
124.36.97.31	AS17506 ARTERIA Networks Corporation	`1.15ms` from Tokyo, JP

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f2 -m7 166.2.172.238

traceroute to 166.2.172.238 (166.2.172.238): 7 hops max, 52 byte packets

2 [AS12570] 212.4.152.138 1.452 ms

3 [AS12570] 212.96.178.177 1.279 ms

4 [AS12570] 212.96.178.38 1.52 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Brno, CZ

On November 22nd 2025

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales