AS20231 Charter Communications Inc

United States Charter-Communications-TWC-20231-NE-KS-C3 ARIN 7 IPv4 prefixes 2 IPv6 prefixes

IPv4 addresses

22,016

IPv6 /48 networks

288

RPKI

9 valid0 no ROA

Peers and downstreams

Holder

AS name: Charter-Communications-TWC-20231-NE-KS-C3
Description: Charter-Communications-TWC-20231-NE-KS-C3
Organisation: Charter Communications Inc
Abuse contact: Not published
Assigned: 2001-04-09
Registered: 2001-04-10
Record last changed: 2022-03-15 20:23 UTC

192.62.240.0/21 24.166.164.0/22 24.166.168.0/21 24.166.176.0/20 72.129.224.0/19 72.133.224.0/20 76.58.46.0/23

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade B · 75/100

pass	Prefixes covered by valid ROAs 9 of 9 announced prefixes are RPKI valid.	25/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 2 IPv6 prefixes.	15/15
pass	More than one upstream 2 upstreams seen in BGP.	10/10
partly	Working abuse contact abuse@charter.net is published, but charter.net has no mail server (MX).	5/15
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 2022-03-15.	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/20231"><img src="https://ip-fd.net/badge/asn/20231/health.svg" alt="AS20231 network health on IP-FD.net"></a>

Markdown

[![AS20231 network health](https://ip-fd.net/badge/asn/20231/health.svg)](https://ip-fd.net/asn/20231)

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

Routing changes

Last 30 days

2026-10-04 14:47 UTC	New neighbour	AS396433	downstream
2026-10-04 14:47 UTC	New prefix	24.166.168.0/21
2026-10-04 14:47 UTC	New prefix	72.129.224.0/19
2026-10-04 14:47 UTC	New prefix	72.133.224.0/20
2026-10-04 14:47 UTC	New prefix	24.166.176.0/20
2026-10-04 14:47 UTC	New prefix	24.166.164.0/22

WHOIS

aut-num:        AS20231
as-name:        TWC-20231-NE-KS-C3
handle:         AS20231
registrant:     CC-3517 (Charter Communications Inc)
administrative,technical:IPADD1-ARIN (IPAddressing) <PublicIPAddressing@charter.com>
abuse:          ABUSE19-ARIN (Abuse) <abuse@charter.net>
last changed:   2022-03-15T16:23:07-04:00
registration:   2001-04-10T00:00:00-04:00
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/20231

const res = await fetch('https://ip-fd.net/api/v1/asn/20231', {
  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/20231', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/20231');
curl_setopt($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/20231", 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))

Works without a key at a lower rate. Get a free key.

AS11427	Charter Communications Inc TWC-11427-TEXAS
AS20115	Charter Communications LLC CHARTER-20115

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