Autonomous system
AS33359 COWEN-AS-3
Unclassified APNIC
Summary
Cowen
business financial enterprise corporate
COWEN-AS-3 is held by Cowen Execution Services LLC.
What it's used for
- The address space carries internal corporate infrastructure, evidenced by the consistent netname
TDC-NETacross all prefixes. - The inventory consists of 2816 IPv4 addresses across 7 prefixes, with 13 observed neighbours, indicating a small-scale enterprise network rather than a transit or access provider.
Notable
- Registrants are consistent with the announcer, listing
COWEN EXECUTION SERVICES LLC.for most prefixes andCowen Group, Incfor the 208.89.28.0/23 block. - The operator is a financial services firm that has undergone significant corporate changes, including rebranding from TD Cowen to Cowen Inc. following its acquisition by Toronto-Dominion Bank.
- The address inventory is finely subdivided into /23 and /24 blocks, typical of internal corporate site segmentation.
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 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Equinix Internet Exchange New York | New York, United States | 198.32.118.78 |
Transit providers
7 upstream, 0 downstream and 7 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 2026-10-17, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 2.82K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 7 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS33359- Registry name
- COWEN-AS-3
- Registrant
- COWEN EXECUTION SERVICES LLC.
- Abuse contact
- tdc-network@tdsecurities.com
- Registered
- 2004-12-02
- Last changed
- 2017-09-27
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 79% valid · 11 valid, 3 with no ROA
- ROAs
- 17 authorising AS33359
- ASPA
- no ASPA record
- IRR
- 43% registered · 6 of 14 announcements
- Route objects
- 13 naming AS33359
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: 442 networks and 1,783 prefixes, as published 2026-10-17. 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