AS121

6 IPv4 prefixes 0 IPv6 prefixes

IPv4 addresses

9,728

IPv6 /48 networks

RPKI

0 valid6 no ROA

Peers and downstreams

Holder

AS name
Organisation: Not published
Abuse contact: Not published
Registered: 1987-08-13
Record last changed: 2025-09-12 13:43 UTC

214.54.192.0/20 214.54.208.0/20 214.54.224.0/23 214.54.226.0/23 214.54.230.0/24 214.54.231.0/24

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:        AS121
as-name:        DNIC-AS-00121
handle:         AS121
registrant:     USDDD (United States Department of Defense (DoD))
last changed:   2025-09-12T09:43:06-04:00
registration:   1987-08-13T00:00:00-04:00
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/121

const res = await fetch('https://ip-fd.net/api/v1/asn/121', {
  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/121', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/121');
curl_setopt($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/121", 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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