AS33359 COWEN EXECUTION SERVICES LLC.

United States COWEN-US-33359 ARIN 14 IPv4 prefixes 0 IPv6 prefixes

IPv4 addresses

2,816

IPv6 /48 networks

RPKI

11 valid3 no ROA

Peers and downstreams

Holder

AS name: COWEN-US-33359
Description: Cowen US
Organisation: COWEN EXECUTION SERVICES LLC.
Abuse contact: Not published
Assigned: 2004-12-01
Registered: 2004-12-02
Record last changed: 2017-09-27 12:13 UTC

208.89.28.0/24 208.89.29.0/24 67.43.80.0/24 67.43.82.0/23 67.43.82.0/24 67.43.83.0/24 67.43.84.0/23 67.43.84.0/24 67.43.85.0/24 67.43.88.0/23 67.43.88.0/24 67.43.89.0/24 67.43.91.0/24 67.43.93.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade C · 65/100

partly	Prefixes covered by valid ROAs 11 of 14 announced prefixes are RPKI valid, 3 have no ROA.	20/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
fail	Announces IPv6 No IPv6 prefixes are announced.	0/15
pass	More than one upstream 6 upstreams seen in BGP.	10/10
pass	Working abuse contact tdc-network@tdsecurities.com is published.	15/15
fail	Publishes a geofeed No geofeed found. Without one, location databases have to guess.	0/10
pass	No prefixes smaller than /24 or /48 All prefixes are /24 (IPv4) or /48 (IPv6) or larger.	10/10
fail	Registry record maintained Last changed 2017-09-27.	0/5

Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.

Show this on your website

HTML

<a href="https://ip-fd.net/asn/33359"><img src="https://ip-fd.net/badge/asn/33359/health.svg" alt="AS33359 network health on IP-FD.net"></a>

Markdown

[![AS33359 network health](https://ip-fd.net/badge/asn/33359/health.svg)](https://ip-fd.net/asn/33359)

Use rpki.svg instead of health.svg for the RPKI badge.

Routing changes

Last 30 days

2026-10-04 13:57 UTC	Relationship changed	AS9498	upstream to peer
2026-10-04 13:57 UTC	Relationship changed	AS137409	upstream to peer

WHOIS

aut-num:        AS33359
as-name:        COWEN-AS-3
handle:         AS33359
registrant:     BNYBR (COWEN EXECUTION SERVICES LLC.)
technical:      CHANI1-ARIN (Irwin Chan) <irwin.chan@td.com>
abuse,administrative,technical:ABA20-ARIN (Andrei Bankouski) <tdc-network@tdsecurities.com>
technical:      PALEO-ARIN (Anthony Paleologus) <anthony.paleologus@td.com>
abuse:          TDDNS-ARIN (TD-DNS-POC) <dnstech@td.com>
technical:      ABA20-ARIN (Andrei Bankouski) <tdc-network@tdsecurities.com>
last changed:   2017-09-27T08:13:49-04:00
registration:   2004-12-02T09:09:57-05:00
source:         ARIN (RDAP)

Routing data

Updated just now

Registry record

Fetched just now from ARIN RDAP

Prefixes and neighbours come from the RIPE RIS route collectors. Data older than 5 minutes is refreshed when this page is opened.

API

curl -H "X-API-Key: YOUR_KEY" https://ip-fd.net/api/v1/asn/33359

const res = await fetch('https://ip-fd.net/api/v1/asn/33359', {
  headers: { 'X-API-Key': 'YOUR_KEY' }
});
const data = await res.json();
console.log(data);

import requests

r = requests.get('https://ip-fd.net/api/v1/asn/33359', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/33359');
curl_setopt($ch, CURLOPT_HTTPHEADER, ['X-API-Key: YOUR_KEY']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = json_decode(curl_exec($ch), true);
print_r($data);

req, _ := http.NewRequest("GET", "https://ip-fd.net/api/v1/asn/33359", nil)
req.Header.Set("X-API-Key", "YOUR_KEY")
res, err := http.DefaultClient.Do(req)
if err != nil {
    log.Fatal(err)
}
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

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