Autonomous System details

AS356

United States Department of Defense (DoD) · mail.mil

United States

Stub AS

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AS356 – United States Department of Defense (DoD)

Field	Value
Country	United States
Website	mail.mil
Hosted domains	0
IPv4 addresses	131,072
IPv6 addresses	309,485,009,821,345,068,724,781,056
ASN type	Government
Registry	arin
Allocated	37 years ago on Jun 30, 1989
Updated	4 months ago on Sep 12, 2025

Netblock	Company	Num of IPs
55.48.0.0/16	Headquarters, USAISC	65,536
55.89.0.0/16	Headquarters, USAISC	65,536
55.89.174.0/23	Headquarters, USAISC	512
55.89.234.0/23	Headquarters, USAISC	512
55.48.200.0/24	Headquarters, USAISC	256
55.89.1.0/24	Headquarters, USAISC	256
55.89.2.0/24	Headquarters, USAISC	256
55.89.4.0/24	Headquarters, USAISC	256
55.89.6.0/24	Headquarters, USAISC	256
55.89.7.0/24	Headquarters, USAISC	256
55.89.8.0/24	Headquarters, USAISC	256
55.89.9.0/24	Headquarters, USAISC	256
55.89.10.0/24	Headquarters, USAISC	256
55.89.12.0/24	Headquarters, USAISC	256
55.89.14.0/24	Headquarters, USAISC	256
55.89.15.0/24	Headquarters, USAISC	256
55.89.16.0/24	Headquarters, USAISC	256
55.89.17.0/24	Headquarters, USAISC	256
55.89.18.0/24	Headquarters, USAISC	256
55.89.19.0/24	Headquarters, USAISC	256
55.89.20.0/24	Headquarters, USAISC	256
55.89.21.0/24	Headquarters, USAISC	256
55.89.22.0/24	Headquarters, USAISC	256
55.89.23.0/24	Headquarters, USAISC	256
55.89.24.0/24	Headquarters, USAISC	256
55.89.25.0/24	Headquarters, USAISC	256
55.89.26.0/24	Headquarters, USAISC	256
55.89.27.0/24	Headquarters, USAISC	256
55.89.28.0/24	Headquarters, USAISC	256
55.89.29.0/24	Headquarters, USAISC	256
55.89.31.0/24	Headquarters, USAISC	256
55.89.32.0/24	Headquarters, USAISC	256
55.89.33.0/24	Headquarters, USAISC	256
55.89.34.0/24	Headquarters, USAISC	256
55.89.36.0/24	Headquarters, USAISC	256
55.89.37.0/24	Headquarters, USAISC	256
55.89.38.0/24	Headquarters, USAISC	256
55.89.39.0/24	Headquarters, USAISC	256
55.89.40.0/24	Headquarters, USAISC	256
55.89.41.0/24	Headquarters, USAISC	256
55.89.42.0/24	Headquarters, USAISC	256
55.89.43.0/24	Headquarters, USAISC	256
55.89.44.0/24	Headquarters, USAISC	256
55.89.45.0/24	Headquarters, USAISC	256
55.89.47.0/24	Headquarters, USAISC	256
55.89.48.0/24	Headquarters, USAISC	256
55.89.49.0/24	Headquarters, USAISC	256
55.89.50.0/24	Headquarters, USAISC	256
55.89.51.0/24	Headquarters, USAISC	256
55.89.53.0/24	Headquarters, USAISC	256
55.89.54.0/24	Headquarters, USAISC	256
55.89.57.0/24	Headquarters, USAISC	256
55.89.58.0/24	Headquarters, USAISC	256
55.89.60.0/24	Headquarters, USAISC	256
55.89.61.0/24	Headquarters, USAISC	256
55.89.62.0/24	Headquarters, USAISC	256
55.89.63.0/24	Headquarters, USAISC	256
55.89.65.0/24	Headquarters, USAISC	256
55.89.66.0/24	Headquarters, USAISC	256
55.89.67.0/24	Headquarters, USAISC	256
55.89.69.0/24	Headquarters, USAISC	256
55.89.70.0/24	Headquarters, USAISC	256
55.89.73.0/24	Headquarters, USAISC	256
55.89.75.0/24	Headquarters, USAISC	256
55.89.77.0/24	Headquarters, USAISC	256
55.89.78.0/24	Headquarters, USAISC	256
55.89.79.0/24	Headquarters, USAISC	256
55.89.80.0/24	Headquarters, USAISC	256
55.89.82.0/24	Headquarters, USAISC	256
55.89.83.0/24	Headquarters, USAISC	256
55.89.85.0/24	Headquarters, USAISC	256
55.89.86.0/24	Headquarters, USAISC	256
55.89.87.0/24	Headquarters, USAISC	256
55.89.88.0/24	Headquarters, USAISC	256
55.89.89.0/24	Headquarters, USAISC	256
55.89.91.0/24	Headquarters, USAISC	256
55.89.92.0/24	Headquarters, USAISC	256
55.89.93.0/24	Headquarters, USAISC	256
55.89.94.0/24	Headquarters, USAISC	256
55.89.95.0/24	Headquarters, USAISC	256
55.89.96.0/24	Headquarters, USAISC	256
55.89.98.0/24	Headquarters, USAISC	256
55.89.99.0/24	Headquarters, USAISC	256
55.89.105.0/24	Headquarters, USAISC	256
55.89.149.0/24	Headquarters, USAISC	256
55.89.150.0/24	Headquarters, USAISC	256
55.89.155.0/24	Headquarters, USAISC	256
55.89.156.0/24	Headquarters, USAISC	256
55.89.160.0/24	Headquarters, USAISC	256
55.89.170.0/24	Headquarters, USAISC	256
55.89.180.0/24	Headquarters, USAISC	256
55.89.200.0/24	Headquarters, USAISC	256
55.89.205.0/24	Headquarters, USAISC	256
55.89.210.0/24	Headquarters, USAISC	256
55.89.219.0/24	Headquarters, USAISC	256
55.89.220.0/24	Headquarters, USAISC	256
55.89.221.0/24	Headquarters, USAISC	256
55.89.222.0/24	Headquarters, USAISC	256
55.89.223.0/24	Headquarters, USAISC	256
55.89.224.0/24	Headquarters, USAISC	256
55.89.225.0/24	Headquarters, USAISC	256
55.89.226.0/24	Headquarters, USAISC	256
55.89.227.0/24	Headquarters, USAISC	256
55.89.228.0/24	Headquarters, USAISC	256
55.89.229.0/24	Headquarters, USAISC	256
55.89.232.0/24	Headquarters, USAISC	256
55.89.238.0/24	Headquarters, USAISC	256
55.89.240.0/24	Headquarters, USAISC	256
55.89.244.0/24	Headquarters, USAISC	256
55.89.245.0/24	Headquarters, USAISC	256
55.89.246.0/24	Headquarters, USAISC	256
55.89.247.0/24	Headquarters, USAISC	256
55.89.250.0/24	Headquarters, USAISC	256
55.89.252.0/24	Headquarters, USAISC	256
55.89.253.0/24	Headquarters, USAISC	256

Netblock	Company
2608:18b:5400::/40	United States Department of Defense (DoD)

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WHOIS Details

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                                                ASHandle:       AS356
                                                OrgID:          AS356
                                                ASName:         AS356
                                                ASNumber:       AS356
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are no domains currently hosted on this ASN.

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Hosted Domains API & Database

Peers

There is 1 peer for this ASN.

Peers	Name
AS306	United States Department of Defense (DoD)

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ASN API & Database

Upstreams

There is 1 peer for this ASN.

upstreams	Name
AS306	United States Department of Defense (DoD)

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ASN API & Database

Downstreams

There are no downstreams for this ASN.

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ASN API & Database

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
68.1.16.36	AS22773 Cox Communications Inc.	`1.07ms` from Atlanta, US
187.0.81.228	AS22689 SERCOMTEL S/A TELECOMUNICACOES	`8.05ms` from Curitiba, BR
218.7.72.84	AS4837 CHINA UNICOM China169 Backbone	`2.95ms` from Harbin, CN
171.245.234.196	AS7552 Viettel Group	`16.77ms` from Ho Chi Minh City, VN
54.46.101.180	AS16509 Amazon.com, Inc.	`0.14ms` from Hong Kong, HK
137.63.207.4	AS327687 Research and Education Network for Uganda	`8.65ms` from Nairobi, KE
190.167.96.228	AS6400 Compañía Dominicana de Teléfonos S. A.	`2.25ms` from Santo Domingo, DO
220.94.9.148	AS4766 Korea Telecom	`4.70ms` from Seoul, KR
34.199.13.20	AS14618 Amazon.com, Inc.	`0.56ms` from Ashburn, US
142.202.68.4	AS18934 TenHats, LLC	`12.03ms` from Charlotte, US
185.54.25.52	AS9009 M247 Europe SRL	`0.28ms` from Frankfurt am Main, DE
37.81.136.132	AS3320 Deutsche Telekom AG	`19.23ms` from Hamburg, DE
125.211.40.20	AS4837 CHINA UNICOM China169 Backbone	`4.68ms` from Harbin, CN
221.127.88.20	AS9304 HGC Global Communications Limited	`1.46ms` from Hong Kong, HK
2.126.71.212	AS5607 Sky UK Limited	`0.99ms` from London, GB
81.39.77.244	AS3352 TELEFONICA DE ESPANA S.A.U.	`11.05ms` from Madrid, ES
98.66.147.180	AS8075 Microsoft Corporation	`0.17ms` from Paris, FR
154.208.29.180	AS54801 Zillion Network Inc.	`0.57ms` from San Jose, US
51.175.209.36	AS29695 Altibox AS	`2.06ms` from Sandefjord, NO
158.96.151.116	AS1226 California Department of Technology	`3.75ms` from Santa Clara, US
51.77.140.228	AS16276 OVH SAS	`0.11ms` from Strasbourg, FR
126.14.170.116	AS17676 SoftBank Corp.	`12.95ms` from Tokyo, JP
120.69.87.180	AS4134 CHINANET-BACKBONE	`3.60ms` from UEruemqi, CN
34.116.245.116	AS396982 Google LLC	`0.10ms` from Warsaw, PL
37.97.181.36	AS20857 Signet B.V.	`0.63ms` from Amsterdam, NL

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

traceroute -a -n -q1 -f3 -m7 55.48.42.89

traceroute to 55.48.42.89 (55.48.42.89): 7 hops max, 52 byte packets

3 [AS12570] 212.96.178.177 1.157 ms

4 [AS12570] 212.96.178.38 1.466 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Brno, CZ

On December 28th 2025

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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 AS356 at robtex.

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