83.228.145.0/24

AS33425 · CoreWeave, Inc

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Summary

Country	United Kingdom
Domain	coreweave.com
ASN	AS33425
Parent Range	83.228.128.0/18
Registry	RIPE
ID	UK-COREWEAVE1-20040428

WHOIS Details

inetnum:        83.228.128.0 - 83.228.191.255
netname:        UK-COREWEAVE1-20040428
country:        GB
org:            ORG-CUL19-RIPE
admin-c:        CN13637-RIPE
tech-c:         CN13637-RIPE
status:         ALLOCATED PA
mnt-by:         lir-uk-coreweave1-1-MNT
mnt-by:         RIPE-NCC-HM-MNT
created:        2024-11-01T11:46:47Z
last-modified:  2024-11-01T11:46:47Z
source:         RIPE
abuse-email:    abuse@coreweave.com
abuse-c:        AR75699-RIPE
abuse-org:      ORG-CUL19-RIPE

organisation:   ORG-CUL19-RIPE
org-name:       CoreWeave UK Limited
country:        GB
org-type:       LIR
address:        Phosphor (6th Floor) 133 Park Street
address:        SE1 9EA
address:        London
address:        UNITED KINGDOM
phone:          +1-201-256-1436
e-mail:         noc@coreweave.com
admin-c:        CN13637-RIPE
tech-c:         CN13637-RIPE
abuse-c:        AR75699-RIPE
mnt-ref:        lir-uk-coreweave1-1-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         lir-uk-coreweave1-1-MNT
created:        2024-05-31T07:30:35Z
last-modified:  2025-08-05T10:45:53Z
source:         RIPE
abuse-email:    abuse@coreweave.com
abuse-c:        AR75699-RIPE
abuse-org:      undefined

role:           CoreWeave NOC
address:        UNITED KINGDOM
address:        London
address:        EC2M 5TQ
address:        60 London Wall
phone:          +1-201-256-1436
e-mail:         noc@coreweave.com
nic-hdl:        CN13637-RIPE
mnt-by:         lir-uk-coreweave1-1-MNT
created:        2024-05-31T07:30:33Z
last-modified:  2024-05-31T07:30:34Z
source:         RIPE

Overlapping Ranges

BGP prefixes that contain 83.228.145.0/24

Range	ASN	Company	Num of IPs
83.228.128.0/18	AS33425	CoreWeave UK Limited	16,384

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
199.139.49.248	AS4152 USDA	`1.26ms` from Ashburn, US
73.68.176.8	AS7922 Comcast Cable Communications, LLC	`7.79ms` from Boston, US
20.14.142.104	AS8075 Microsoft Corporation	`0.37ms` from Boydton, US
179.37.85.24	AS22927 Telefonica de Argentina	`1.87ms` from Buenos Aires, AR
101.205.96.8	AS4837 CHINA UNICOM China169 Backbone	`7.68ms` from Chengdu, CN
91.184.167.248	AS9063 VSE NET GmbH	`6.65ms` from Frankfurt am Main, DE
77.8.188.232	AS6805 Telefonica Germany GmbH & Co.OHG	`1.02ms` from Hamburg, DE
77.8.149.216	AS6805 Telefonica Germany GmbH & Co.OHG	`1.04ms` from Hamburg, DE
27.72.136.40	AS7552 Viettel Group	`1.18ms` from Hanoi, VN
213.153.251.8	AS34984 Superonline Iletisim Hizmetleri A.S.	`2.96ms` from Izmir, TR
83.52.5.200	AS3352 TELEFONICA DE ESPANA S.A.U.	`10.02ms` from Madrid, ES
194.85.30.136	AS57580 Federal State Budgetary Institution "Research Center for Information of the Ministry of Foreign Affairs of the Russian Federation"	`1.85ms` from Moscow, RU
186.69.16.24	AS14522 SERVICIOS DE TELECOMUNICACIONES SETEL S.A. (XTRIM EC)	`0.88ms` from Quito, EC
98.45.203.24	AS7922 Comcast Cable Communications, LLC	`5.15ms` from San Jose, US
73.202.90.200	AS7922 Comcast Cable Communications, LLC	`6.58ms` from San Jose, US
189.165.3.248	AS8151 UNINET	`5.33ms` from Santiago de Queretaro, MX
174.27.129.200	AS209 CenturyLink Communications, LLC	`10.54ms` from Seattle, US
119.215.36.120	AS4766 Korea Telecom	`1.95ms` from Seoul, KR
18.140.169.88	AS16509 Amazon.com, Inc.	`0.16ms` from Singapore, SG
83.41.48.88	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.81ms` from Barcelona, ES
119.5.163.168	AS4837 CHINA UNICOM China169 Backbone	`7.21ms` from Chengdu, CN
177.157.46.120	AS18881 TELEFÔNICA BRASIL S.A	`13.37ms` from Curitiba, BR
107.141.21.216	AS7018 AT&T Enterprises, LLC	`17.61ms` from Dallas, US
106.196.110.168	AS45609 Bharti Airtel Ltd. AS for GPRS Service	`6.81ms` from Delhi, IN
174.3.219.24	AS6327 Shaw Communications Inc.	`4.25ms` from Edmonton, CA

Traceroute

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

traceroute -a -n -q1 -f3 -m9 83.228.145.0

traceroute to 83.228.145.0 (83.228.145.0): 9 hops max, 52 byte packets

3 [AS3356] 171.75.9.77 29.227 ms

4 [AS3356] 213.242.113.86 29.25 ms

5 [AS33425] 166.19.1.15 29.351 ms

6 [AS33425] 166.19.3.137 42.182 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Zagreb, HR

On October 9th 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.

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