AS4221
United States Department of Defense (DoD) · mail.mil
United States
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| Field | Value |
|---|---|
| Country |
United States
|
| Website | mail.mil |
| Hosted domains | 0 |
| Number of IPv4 | 0 |
| Number of IPv6 | 2,417,851,639,229,258,349,412,352 |
| ASN type | Government |
| Registry | arin |
| Allocated | 31 years ago on Jan 09, 1995 |
| Updated | 2 months ago on Sep 12, 2025 |
IP Ranges
There are no known IPv4 addresses belonging to this network
| Netblock | Company |
|---|---|
| 2001:480:52::/48 | High Performance Computing |
| 2001:480:95::/48 | High Performance Computing |
WHOIS Details
ASHandle: AS4221
OrgID: AS4221
ASName: AS4221
ASNumber: AS4221
RegDate: 0000-00-00
Updated: 0000-00-00
TechHandle: AA00-AAAA
Source: AAAA
Hosted Domains
There are no domains currently hosted on this ASN.
Peers
There is 1 peer for this ASN.
| Peers | Name |
|---|---|
| AS668 | United States Department of Defense (DoD) |
Upstreams
There is 1 peer for this ASN.
| upstreams | Name |
|---|---|
| AS668 | United States Department of Defense (DoD) |
Downstreams
There are no downstreams for this ASN.
Pingable IPs
No IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.
Other Pingable IPs
Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.
| IP Address | ASN | Details |
|---|---|---|
| 174.173.42.157 |
8.43ms from Ashburn,
US
|
|
| 97.234.151.189 |
18.56ms from Chicago,
US
|
|
| 18.224.133.221 |
0.15ms from Columbus,
US
|
|
| 181.10.49.221 |
11.51ms from Cordoba,
AR
|
|
| 162.198.152.189 |
18.63ms from Dallas,
US
|
|
| 103.175.242.221 |
1.11ms from Dhaka,
BD
|
|
| 80.130.67.109 |
5.30ms from Frankfurt am Main,
DE
|
|
| 91.224.29.77 |
0.64ms from Gdansk,
PL
|
|
| 82.141.85.173 |
0.60ms from Helsinki,
FI
|
|
| 109.153.158.221 |
11.97ms from London,
GB
|
|
| 34.231.117.109 |
0.19ms from Reston,
US
|
|
| 148.216.79.253 |
8.57ms from Santiago de Queretaro,
MX
|
|
| 185.21.128.237 |
1.21ms from Secaucus,
US
|
|
| 1.234.84.77 |
1.63ms from Seoul,
KR
|
|
| 116.236.236.253 |
3.48ms from Shanghai,
CN
|
|
| 80.72.71.173 |
3.59ms from Sofia,
BG
|
|
| 202.102.241.221 |
1.78ms from Zhengzhou,
CN
|
|
| 99.179.190.253 |
5.39ms from Atlanta,
US
|
|
| 196.245.248.77 |
0.25ms from Bucharest,
RO
|
|
| 172.241.151.237 |
1.44ms from Chicago,
US
|
|
| 54.246.166.205 |
0.21ms from Dublin,
IE
|
|
| 143.14.136.13 |
0.76ms from Frankfurt am Main,
DE
|
|
| 113.45.76.237 |
1.93ms from Guangzhou,
CN
|
|
| 20.239.221.221 |
0.30ms from Hong Kong,
HK
|
|
| 143.204.128.221 |
0.10ms from Houston,
US
|
Related Networks
What is an ASN?
Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.
The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS4221 at robtex.
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