204.208.16.0/20

AS5972 · United States Department of Defense (DoD)

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Summary

Country	United States
Domain	mail.mil
ASN	AS5972
Parent Range	204.208.0.0/16
Registry	ARIN
ID	AMEDD-CHCS2

WHOIS Details

NetHandle:      NET-204-208-0-0-2
OrgID:          HEADQU-3
Parent:         NET-204-208-0-0-1
NetName:        AMEDD-CHCS2
NetRange:       204.208.0.0 - 204.208.255.255
NetType:        reallocation
RegDate:        2025-08-25
Updated:        2025-08-25
Source:         ARIN


OrgID:          HEADQU-3
OrgName:        Headquarters, USAISC
CanAllocate:    
Street:         NETC-ANC CONUS TNOSC
City:           Fort Huachuca
State/Prov:     AZ
Country:        US
PostalCode:     85613
RegDate:        1990-03-26
Updated:        2025-03-13
OrgAdminHandle: REGIS10-ARIN
OrgTechHandle:  REGIS10-ARIN
OrgAbuseHandle: REGIS10-ARIN
Source:         ARIN


POCHandle:      REGIS10-ARIN
IsRole:         Y
LastName:       Registration
FirstName:      
Street:         DISA-Columbus
Street:         300 North James Road
City:           Whitehall
State/Prov:     OH
Country:        US
PostalCode:     43213
RegDate:        2009-06-24
Updated:        2026-02-12
OfficePhone:    +1-844-347-2457
Mailbox:        disa.columbus.ns.mbx.arin-registrations@mail.mil
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 204.208.16.0/20

Range	ASN	Company	Num of IPs
204.208.0.0/16	AS5972	Headquarters, USAISC	65,536
204.208.0.0/16	AS721	Headquarters, USAISC	65,536

Nearby Ranges

BGP prefixes that overlap with 204.208.0.0/16

Range	ASN	Company	Num of IPs
204.208.0.0/16	AS5972	Headquarters, USAISC	65,536
204.208.0.0/16	AS721	Headquarters, USAISC	65,536

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

3,288 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
204.208.24.84	AS5972 United States Department of Defense (DoD)	`2.97ms` from Tokyo, JP
204.208.28.105	AS5972 United States Department of Defense (DoD)	`2.93ms` from Tokyo, JP
204.208.27.162	AS5972 United States Department of Defense (DoD)	`3.01ms` from Tokyo, JP
204.208.21.55	AS5972 United States Department of Defense (DoD)	`3.01ms` from Tokyo, JP
204.208.20.226	AS5972 United States Department of Defense (DoD)	`2.96ms` from Tokyo, JP
204.208.31.141	AS5972 United States Department of Defense (DoD)	`2.95ms` from Tokyo, JP
204.208.19.192	AS5972 United States Department of Defense (DoD)	`2.90ms` from Tokyo, JP
204.208.29.70	AS5972 United States Department of Defense (DoD)	`2.93ms` from Tokyo, JP
204.208.16.116	AS5972 United States Department of Defense (DoD)	`2.99ms` from Tokyo, JP
204.208.30.133	AS5972 United States Department of Defense (DoD)	`2.98ms` from Tokyo, JP
204.208.26.196	AS5972 United States Department of Defense (DoD)	`2.99ms` from Tokyo, JP
204.208.25.96	AS5972 United States Department of Defense (DoD)	`2.98ms` from Tokyo, JP
204.208.23.225	AS5972 United States Department of Defense (DoD)	`2.94ms` from Tokyo, JP
204.208.22.210	AS5972 United States Department of Defense (DoD)	`2.95ms` from Tokyo, JP
204.208.17.124	AS5972 United States Department of Defense (DoD)	`2.98ms` from Tokyo, JP
204.208.18.54	AS5972 United States Department of Defense (DoD)	`2.97ms` from Tokyo, JP

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
67.191.221.244	AS7922 Comcast Cable Communications, LLC	`4.54ms` from Atlanta, US
142.244.203.244	AS3359 University of Alberta	`5.49ms` from Calgary, CA
86.41.39.132	AS5466 Eircom Limited	`1.02ms` from Dublin, IE
79.232.247.20	AS3320 Deutsche Telekom AG	`6.17ms` from Frankfurt am Main, DE
72.191.120.20	AS11427 Charter Communications Inc	`7.07ms` from Houston, US
8.147.63.20	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.58ms` from Jining, CN
212.118.252.116	AS15570 PACKETFABRIC (UK) LTD	`1.19ms` from London, GB
193.35.161.4	AS2856 British Telecommunications PLC	`8.53ms` from London, GB
172.82.10.4	AS400893 Fiber Connect, LLC.	`8.51ms` from Montreal, CA
117.198.28.100	AS9829 National Internet Backbone	`3.65ms` from Mumbai, IN
222.9.140.52	AS18126 Chubu Telecommunications Company, Inc.	`5.52ms` from Osaka, JP
65.61.3.164	AS11357 InfoQuest Technologies, Inc.	`10.64ms` from Pittsburgh, US
189.150.91.148	AS8151 UNINET	`15.84ms` from Santiago de Queretaro, MX
180.209.85.4	AS4538 China Education and Research Network Center	`9.44ms` from Shanghai, CN
152.250.104.212	AS27699 TELEFÔNICA BRASIL S.A	`2.97ms` from São Paulo, BR
122.255.139.52	AS4721 JCOM Co., Ltd.	`11.96ms` from Tokyo, JP
154.241.47.196	AS36947 Telecom Algeria	`9.02ms` from Valencia, ES
185.244.124.180	AS204642 Adecco IT Services SAS	`1.06ms` from Amsterdam, NL
86.59.197.36	AS5483 Magyar Telekom Plc.	`0.79ms` from Budapest, HU
171.224.92.116	AS7552 Viettel Group	`1.14ms` from Hanoi, VN
198.248.62.100	AS2495 Kansas Research and Education Network	`5.71ms` from Kansas City, US
83.41.45.244	AS3352 TELEFONICA DE ESPANA S.A.U.	`8.65ms` from Madrid, ES
98.56.1.228	AS7922 Comcast Cable Communications, LLC	`11.54ms` from Miami, US
167.62.192.212	AS6057 Administracion Nacional de Telecomunicaciones	`1.78ms` from Montevideo, UY
23.196.182.52	AS16625 Akamai Technologies, Inc.	`0.88ms` from New York City, US

Traceroute

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

traceroute -a -n -q1 -f4 -m7 204.208.28.195

traceroute to 204.208.28.195 (204.208.28.195): 7 hops max, 52 byte packets

4 [AS21928] 100.199.0.93 0.073 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Tieling, CN

On March 15th 2026

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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