166.19.0.0/16

AS33425 · CoreWeave, Inc

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Summary

Country	United States
Domain	coreweave.com
ASN	AS33425
Registry	ARIN
ID	COREW-1

WHOIS Details

NetHandle:      NET-166-19-0-0-1
OrgID:          COREW-1
Parent:         NET-166-0-0-0-0
NetName:        COREW-1
NetRange:       166.19.0.0 - 166.19.255.255
NetType:        allocation
RegDate:        2024-01-25
Updated:        2024-01-25
Source:         ARIN


OrgID:          COREW-1
OrgName:        CoreWeave, Inc
CanAllocate:    
Street:         101 Eisenhower Parkway
Street:         Suite 106
City:           Roseland
State/Prov:     NJ
Country:        US
PostalCode:     07068
Comment:        http://coreweave.com
RegDate:        2020-05-14
Updated:        2024-11-25
OrgAdminHandle: SALAN13-ARIN
OrgTechHandle:  COREW-ARIN
OrgAbuseHandle: COREW1-ARIN
OrgNOCHandle:   COREW-ARIN
OrgRoutingHandle:   COREW-ARIN
OrgDNSHandle:   COREW-ARIN
Source:         ARIN


POCHandle:      COREW-ARIN
IsRole:         Y
LastName:       CoreWeave NOC
FirstName:      
Street:         101 Eisenhower Parkway
Street:         Suite 106
City:           Roseland
State/Prov:     NJ
Country:        US
PostalCode:     07068
RegDate:        2023-02-21
Updated:        2025-04-21
OfficePhone:    +1-201-256-1436
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      COREW1-ARIN
IsRole:         Y
LastName:       CoreWeave Abuse
FirstName:      
Street:         101 Eisenhower Parkway
Street:         Suite 106
City:           Roseland
State/Prov:     NJ
Country:        US
PostalCode:     07068
RegDate:        2023-02-21
Updated:        2024-04-19
OfficePhone:    +1-201-256-1436
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      SALAN13-ARIN
IsRole:         N
LastName:       Salanki
FirstName:      Peter
Street:         12 Commerce St
City:           Springfield
State/Prov:     NJ
Country:        US
PostalCode:     07081
RegDate:        2018-06-01
Updated:        2023-02-21
OfficePhone:    +1-201-256-1436
Mailbox:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 166.0.0.0/8

Range	ASN	Company	Num of IPs
166.117.0.0/16	AS16509	Amazon.com, Inc.	65,536
166.82.0.0/16	AS7029	Windstream Communications LLC	65,536
166.211.0.0/16	AS22394	Verizon Business	65,536
166.84.0.0/16	AS2033	Panix	65,536
166.102.0.0/16	AS7029	Windstream Communications LLC	65,536
166.74.0.0/16	AS16509	Amazon.com, Inc.	65,536
166.91.0.0/16	AS33084	District of Columbia Public Schools	65,536
166.58.0.0/16	AS3371	Verizon Business	65,536
166.89.0.0/16	AS13918	City of Tucson	65,536
166.20.0.0/16	AS243	L3Harris Technologies, Inc.	65,536
166.69.0.0/16	AS19773	Motorola MNIC	65,536
166.122.0.0/16	AS6360	University of Hawaii	65,536
166.93.0.0/16	AS26914	Synoptek, LLC	65,536
166.123.0.0/16	AS13506	United States Department of the Treasury	65,536
166.104.0.0/16	AS9321	Hanyang University	65,536
166.92.0.0/16	AS16509	Amazon.com, Inc.	65,536
166.100.0.0/16	AS2687	AT&T Japan K.K.	65,536
166.238.0.0/16	AS26611	COMUNICACIÓN CELULAR S.A. COMCEL S.A.	65,536
166.56.0.0/16	AS3372	Verizon Business	65,536
166.56.0.0/16	AS3371	Verizon Business	65,536
166.58.0.0/16	AS3372	Verizon Business	65,536
166.94.0.0/16	AS3926	Fairfax County Government	65,536
166.72.0.0/16	AS7018	AT&T Enterprises, LLC	65,536
166.80.0.0/16	AS16509	Amazon.com, Inc.	65,536
166.91.0.0/16	AS14072	District of Columbia Public Schools	65,536
166.70.0.0/16	AS6315	XMission, L.C.	65,536
166.99.0.0/16	AS11719	Eaton Corporation	65,536
166.111.0.0/16	AS4538	Tsinghua University	65,536
166.87.0.0/16	AS5080	Saudi Arabian Oil Company	65,536
166.90.0.0/16	AS3257	Level 3 Parent, LLC	65,536
166.211.0.0/16	AS6167	Verizon Business	65,536
166.90.0.0/16	AS3356	Level 3 Parent, LLC	65,536
166.58.0.0/16	AS3377	Verizon Business	65,536
166.49.128.0/17	AS5400	communications networking services Private Unlimited Company	32,768
166.49.0.0/17	AS3561	CenturyLink Communications, LLC	32,768
166.62.128.0/17	AS5769	Videotron Ltee	32,768
166.114.128.0/17	AS6568	EMPRESA NACIONAL DE TELECOMUNICACIONES SOCIEDAD ANONIMA	32,768
166.48.0.0/17	AS396338	Altima Telecom	32,768
166.114.64.0/18	AS6568	EMPRESA NACIONAL DE TELECOMUNICACIONES SOCIEDAD ANONIMA	16,384
166.113.64.0/18	AS53449	OEC Fiber	16,384
166.108.128.0/18	AS35077	Netwo SAS	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
166.114.16.0/20	AS6568	EMPRESA NACIONAL DE TELECOMUNICACIONES SOCIEDAD ANONIMA	4,096

Hosted domains

There are 4 domain names hosted across 4 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
166.19.17.7	seeings.ai	1
166.19.34.24	redsand.new	1
166.19.255.1	cwobject.com	1
166.19.255.2	cwobject-staging.com	1

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

1,049 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
166.19.92.252	AS33425 CoreWeave, Inc	`20.50ms` from Ashburn, US
166.19.1.76	AS33425 CoreWeave, Inc	`0.21ms` from London, GB
166.19.35.76	AS33425 CoreWeave, Inc	`10.24ms` from Los Angeles, US
166.19.98.2	AS33425 CoreWeave, Inc	`9.90ms` from Los Angeles, US
166.19.67.66	AS33425 CoreWeave, Inc	`2.37ms` from Dallas, US
166.19.4.65	AS33425 CoreWeave, Inc	`3.53ms` from New York City, US
166.19.103.66	AS33425 CoreWeave, Inc	`0.90ms` from Dallas, US
166.19.72.226	AS33425 CoreWeave, Inc	`38.26ms` from Murfreesboro, US
166.19.13.1	AS33425 CoreWeave, Inc	`9.21ms` from Ashburn, US
166.19.17.3	AS33425 CoreWeave, Inc	`4.10ms` from Ashburn, US
166.19.100.235	AS33425 CoreWeave, Inc	`1.09ms` from Dallas, US
166.19.251.0	AS33425 CoreWeave, Inc	`0.50ms` from New York City, US
166.19.6.96	AS33425 CoreWeave, Inc	`9.73ms` from San Jose, US
166.19.255.2	AS33425 CoreWeave, Inc	`0.89ms` from Atlanta, US
166.19.70.4	AS33425 CoreWeave, Inc	`8.84ms` from Portland, US
166.19.71.65	AS33425 CoreWeave, Inc	`8.59ms` from Portland, US
166.19.64.212	AS33425 CoreWeave, Inc	`2.68ms` from Dallas, US
166.19.8.5	AS33425 CoreWeave, Inc	`1.69ms` from Secaucus, US
166.19.16.30	AS33425 CoreWeave, Inc	`3.37ms` from Ashburn, US
166.19.248.57	AS33425 CoreWeave, Inc	`0.73ms` from Barcelona, ES
166.19.59.2	AS33425 CoreWeave, Inc	`1.12ms` from Dallas, US
166.19.83.64	AS33425 CoreWeave, Inc	`8.95ms` from Portland, US
166.19.11.24	AS33425 CoreWeave, Inc	`3.59ms` from Ashburn, US
166.19.38.49	AS33425 CoreWeave, Inc	`6.16ms` from Chicago, US
166.19.34.53	AS33425 CoreWeave, Inc	`10.18ms` from Los Angeles, US

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
68.80.154.64	AS7922 Comcast Cable Communications, LLC	`7.71ms` from Ashburn, US
35.85.38.208	AS16509 Amazon.com, Inc.	`0.13ms` from Boardman, US
20.110.38.48	AS8075 Microsoft Corporation	`0.28ms` from Boydton, US
193.74.41.208	AS5432 Proximus NV	`2.09ms` from Brussels, BE
197.255.155.144	AS15022 Adept Internet (Pty) Ltd CT	`1.66ms` from Cape Town, ZA
24.12.208.192	AS7922 Comcast Cable Communications, LLC	`6.80ms` from Chicago, US
104.6.36.160	AS7018 AT&T Enterprises, LLC	`6.42ms` from Dallas, US
119.125.126.96	AS4134 CHINANET-BACKBONE	`7.74ms` from Guangzhou, CN
119.119.60.208	AS4837 CHINA UNICOM China169 Backbone	`14.08ms` from Liaoyang, CN
82.54.165.160	AS3269 Telecom Italia S.p.A.	`5.92ms` from Milan, IT
87.13.247.64	AS3269 Telecom Italia S.p.A.	`4.30ms` from Naples, IT
85.167.137.112	AS2119 Telenor Norge AS	`6.63ms` from Oslo, NO
90.7.175.64	AS3215 Orange S.A.	`2.73ms` from Paris, FR
27.223.209.192	AS4837 CHINA UNICOM China169 Backbone	`1.66ms` from Qingdao, CN
3.235.197.16	AS14618 Amazon.com, Inc.	`0.38ms` from Reston, US
24.5.125.192	AS7922 Comcast Cable Communications, LLC	`5.36ms` from San Jose, US
211.216.96.128	AS4766 Korea Telecom	`8.78ms` from Seoul, KR
27.115.162.112	AS9971 SK Broadband Co Ltd	`1.68ms` from Seoul, KR
172.188.43.128	AS8075 Microsoft Corporation	`0.82ms` from Singapore, SG
123.115.190.208	AS4808 China Unicom Beijing Province Network	`4.17ms` from Beijing, CN
112.35.160.144	AS9808 China Mobile Communications Group Co., Ltd.	`2.63ms` from Beijing, CN
2.206.110.48	AS3209 Vodafone GmbH	`9.66ms` from Berlin, DE
68.43.134.16	AS7922 Comcast Cable Communications, LLC	`9.02ms` from Flint, US
113.46.167.240	AS55990 Huawei Cloud Service data center	`1.95ms` from Guangzhou, CN
103.47.193.208	AS140832 Vietnam F Tech., JSC	`0.18ms` from Hanoi, VN

Traceroute

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

traceroute -a -n -q1 -f2 -m11 166.19.6.244

traceroute to 166.19.6.244 (166.19.6.244): 11 hops max, 52 byte packets

2 [AS20278] 64.44.164.129 2.376 ms

3 *

4 *

5 *

6 *

7 [AS174] 38.32.169.205 6.906 ms

8 [AS33425] 192.112.162.121 6.913 ms

9 *

10 *

11 *

Measurement taken from

IPinfo ProbeNet in Jacksonville, US

On December 6th 2025

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