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
55.89.78.0/24	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
172.75.171.228	AS11426 Charter Communications Inc	`10.59ms` from Atlanta, US
117.251.181.212	AS9829 National Internet Backbone	`11.67ms` from Bengaluru, IN
73.234.110.4	AS7922 Comcast Cable Communications, LLC	`5.33ms` from Boston, US
190.175.41.20	AS22927 Telefonica de Argentina	`1.98ms` from Buenos Aires, AR
60.50.2.84	AS4788 TM TECHNOLOGY SERVICES SDN. BHD.	`6.30ms` from Kuala Lumpur, MY
149.107.89.36	AS41354 ITS Technology Group Limited	`0.79ms` from London, GB
12.5.180.4	AS7018 AT&T Enterprises, LLC	`1.49ms` from Miami, US
69.127.75.180	AS6128 Cablevision Systems Corp.	`8.32ms` from New York City, US
121.86.199.180	AS17511 OPTAGE Inc.	`2.72ms` from Osaka, JP
88.135.148.100	AS24589 Telenet SIA	`0.40ms` from Riga, LV
166.241.188.196	AS6167 Verizon Business	`18.83ms` from Santa Clara, US
78.12.4.52	AS16509 Amazon.com, Inc.	`0.32ms` from Santiago de Queretaro, MX
220.94.9.148	AS4766 Korea Telecom	`4.70ms` from Seoul, KR
61.81.45.244	AS4766 Korea Telecom	`3.22ms` from Seoul, KR
52.77.73.164	AS16509 Amazon.com, Inc.	`0.10ms` from Singapore, SG
195.186.131.4	AS3303 Swisscom (Switzerland) Ltd	`0.63ms` from Zuerich, CH
54.163.110.164	AS14618 Amazon.com, Inc.	`0.62ms` from Ashburn, US
198.48.101.4	AS398156 ACE Fiber	`13.46ms` from Atlanta, US
125.208.26.212	AS4847 China Networks Inter-Exchange	`2.68ms` from Beijing, CN
184.154.195.148	AS32475 Internap Holding LLC	`0.80ms` from Chicago, US
97.185.63.116	AS6167 Verizon Business	`12.97ms` from Chicago, US
5.14.104.148	AS8708 DIGI ROMANIA S.A.	`1.61ms` from Constanţa, RO
125.211.40.20	AS4837 CHINA UNICOM China169 Backbone	`4.68ms` from Harbin, CN
66.190.47.228	AS20115 Charter Communications LLC	`14.68ms` from Milwaukee, US
185.0.21.20	AS13194 Bite IP Network	`0.17ms` from Prague, CZ

Traceroute

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

traceroute -a -n -q1 -f2 -m6 55.89.61.7

traceroute to 55.89.61.7 (55.89.61.7): 6 hops max, 52 byte packets

2 [AS58061] 38.180.36.1 0.278 ms

3 [AS200590] 188.94.153.128 3.638 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Almaty, KZ

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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