Autonomous system
AS33425 COREWEAVE
Unclassified ARIN
Summary
CoreWeave
cloud ai gpu hosting
The AS handle COREWEAVE is operated by CoreWeave, Inc.
What it's used for
- The address space carries cloud infrastructure, evidenced by the reverse DNS record
pe-1.ewr1.coreweave.comand netnames such asCOREW-1andUK-COREWEAVE1-20040428. - The AS announces 95232 IPv4 addresses across 6 prefixes and 1 IPv6 prefix, while maintaining 129 observed neighbours; this ratio of moderate address space against a high number of peering partners indicates a transit-heavy or large-scale hosting role rather than a residential access network.
Notable
- Registrants align with the announcer, listing
CoreWeave, Incfor most prefixes andCoreWeave NOC; CoreWeave UK Limited; Abuse-C Rolefor the UK block. - The company rebranded from Atlantic Crypto Corporation around 2019 to focus on AI cloud computing.
- The inventory includes a significant UK-based block (
83.228.128.0/18) alongside US-based prefixes, reflecting a global infrastructure footprint.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 14 exchanges in 5 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| LINX LON1 | London, United Kingdom | 195.66.228.33 |
| AMS-IX Amsterdam | Amsterdam, Netherlands | 80.249.208.148 |
| Equinix Internet Exchange Ashburn | Ashburn, United States | 206.126.237.94 |
| Seattle Internet Exchange | Seattle, United States | 2001:504:16::8291 |
| Toronto Internet Exchange | Toronto, Canada | 206.108.34.89 |
| DE-CIX New York | New York, United States | 206.82.106.9 |
| Equinix Internet Exchange Chicago | Chicago, United States | 208.115.136.53 |
| Equinix Internet Exchange Dallas | Dallas, United States | 206.223.119.35 |
Transit providers
37 upstream, 0 downstream and 53 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 6 prefixes · 95.23K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 7 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS33425- Registry name
- COREWEAVE
- Registrant
- CoreWeave, Inc
- Abuse contact
- abuse@coreweave.com
- Registered
- 2020-08-05
- Last changed
- 2020-08-05
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 8 valid, 0 with no ROA
- ROAs
- 9 authorising AS33425
- ASPA
- no ASPA record
- IRR
- 100% registered · 8 of 8 announcements
- Route objects
- 116 naming AS33425
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 432 networks and 1,768 prefixes, as published 2026-10-12. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere