AS4221 United States Department of Defense (DoD)

United States DNIC-ASBLK-04214-04221 ARIN 0 IPv4 prefixes 2 IPv6 prefixes

IPv4 addresses

IPv6 /48 networks

RPKI

0 valid2 no ROA

Peers and downstreams

Holder

AS name: DNIC-ASBLK-04214-04221
Description: United States Department of Defense (DoD)
Organisation: United States Department of Defense (DoD)
Abuse contact: Not published
Assigned: 1995-01-08
Registered: 1995-01-09
Record last changed: 2025-09-12 15:24 UTC

None announced.

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:        AS4221
as-name:        DNIC-ASBLK-04214-04221
handle:         AS4214
registrant:     USDDD (United States Department of Defense (DoD))
last changed:   2025-09-12T11:24:12-04:00
registration:   1995-01-09T00:00:00-05:00
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/4221

const res = await fetch('https://ip-fd.net/api/v1/asn/4221', {
  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/4221', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/4221');
curl_setopt($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/4221", 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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