AS40016 MESIROW FINANCIAL HOLDINGS, INC.

United States MESIROW ARIN 2 IPv4 prefixes 0 IPv6 prefixes

IPv4 addresses

512

IPv6 /48 networks

RPKI

0 valid2 no ROA

Peers and downstreams

Holder

AS name: MESIROW
Description: MESIROW FINANCIAL HOLDINGS, INC.
Organisation: MESIROW FINANCIAL HOLDINGS, INC.
Abuse contact: Not published
Assigned: 2006-06-06
Registered: 2006-06-07
Record last changed: 2026-09-25 19:23 UTC

204.153.74.0/24 207.252.173.0/24

Routing changes

Last 30 days

No changes recorded in the last 30 days. Changes are recorded each time the routing data of this AS is refreshed. Get alerts in real time.

WHOIS

aut-num:        AS40016
as-name:        MESIROW
handle:         AS40016
registrant:     MFH-7 (MESIROW FINANCIAL HOLDINGS, INC.)
last changed:   2026-09-25T15:23:27-04:00
registration:   2006-06-07T15:24:52-04:00
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/40016

const res = await fetch('https://ip-fd.net/api/v1/asn/40016', {
  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/40016', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/40016');
curl_setopt($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/40016", 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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AS174
AS23352	DEFT.COM SERVERCENTRAL