AS18596 Madison Telephone Company

United States MADISON COMMUNICATIONS ARIN 8 IPv4 prefixes 1 IPv6 prefix

IPv4 addresses

12,288

IPv6 /48 networks

65,536

RPKI

0 valid9 no ROA

Peers and downstreams

Holder

AS name: MADISON COMMUNICATIONS
Description: PO 29 21668 Double Arch Dr Staunton IL 62088 United States
Organisation: Madison Telephone Company
Abuse contact: Not published
Assigned: 2000-09-17
Registered: 2000-09-18
Record last changed: 2012-02-24 14:44 UTC

66.242.192.0/19 66.242.192.0/24 66.242.208.0/22 66.242.214.0/23 66.242.221.0/24 76.77.224.0/20 76.77.232.0/22 76.77.236.0/22

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade C · 60/100

fail	Prefixes covered by valid ROAs 0 of 9 announced prefixes are RPKI valid, 9 have no ROA.	0/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 1 IPv6 prefix.	15/15
pass	More than one upstream 2 upstreams seen in BGP.	10/10
pass	Working abuse contact abuse@madisontelco.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 2012-02-24.	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/18596"><img src="https://ip-fd.net/badge/asn/18596/health.svg" alt="AS18596 network health on IP-FD.net"></a>

Markdown

[![AS18596 network health](https://ip-fd.net/badge/asn/18596/health.svg)](https://ip-fd.net/asn/18596)

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

Routing changes

Last 30 days

2026-10-04 12:40 UTC

New prefix

66.242.214.0/23

WHOIS

aut-num:        AS18596
as-name:        MADISONTELCO
handle:         AS18596
registrant:     MADT (Madison Telephone Company)
technical:      JB1300-ARIN (Jan Bacher) <jb@janbacher.com>
abuse:          ABUSE655-ARIN (Abuse) <abuse@madisontelco.com>
administrative: GHO34-ARIN (Gary Hoffstetter) <ghoffstetter@madisontelco.com>
technical:      WALDR142-ARIN (Justin Waldrop) <jwaldrop@gomadison.com>
technical:      JB1300-ARIN (Jan Bacher) <jb@janbacher.com>
last changed:   2012-02-24T09:44:34-05:00
registration:   2000-09-18T00:00:00-04:00
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/18596

const res = await fetch('https://ip-fd.net/api/v1/asn/18596', {
  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/18596', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/18596');
curl_setopt($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/18596", 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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