199.123.72.0/21

AS721 · United States Department of Defense (DoD)

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Summary

Country	United States
Domain	mail.mil
ASN	AS721
Registry	ARIN
ID	BG-NET

WHOIS Details

NetHandle:      NET-199-123-71-0-2
OrgID:          HEADQU-3
Parent:         NET-199-123-71-0-1
NetName:        BG-NET
NetRange:       199.123.71.0 - 199.123.76.255
NetType:        reallocation
RegDate:        2025-08-21
Updated:        2025-08-21
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:        2025-02-13
OfficePhone:    +1-844-347-2457
Mailbox:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 199.123.0.0/16

Range	ASN	Company	Num of IPs
199.123.128.0/17	AS749	DoD Network Information Center	32,768
199.123.32.0/19	AS749	DoD Network Information Center	8,192
199.123.0.0/22	AS15108	Allo Communications LLC	1,024
199.123.4.0/22	AS749	DoD Network Information Center	1,024
199.123.8.0/22	AS749	DoD Network Information Center	1,024
199.123.108.0/24	AS367	Headquarters, USAISC	256
199.123.85.0/24	AS367	Headquarters, USAISC	256
199.123.13.0/24	AS54762	Ashland University	256
199.123.90.0/24	AS668	Headquarters, USAISC	256
199.123.91.0/24	AS721	Headquarters, USAISC	256
199.123.12.0/24	AS749	DoD Network Information Center	256
199.123.82.0/24	AS1540	Headquarters, USAISC	256
199.123.70.0/24	AS1540	Headquarters, USAISC	256
199.123.84.0/24	AS1540	Headquarters, USAISC	256
199.123.106.0/24	AS1562	Headquarters, USAISC	256

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

No IPs in this range 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
98.21.241.245	AS7029 Windstream Communications LLC	`5.04ms` from Atlanta, US
202.9.69.245	AS46047 Politeknik Negeri Sriwijaya	`9.36ms` from Batam, ID
81.12.251.181	AS12302 Vodafone Romania S.A.	`0.92ms` from Bucharest, RO
209.44.131.101	AS17306 JAB Wireless, INC.	`14.56ms` from Dallas, US
3.28.112.37	AS16509 Amazon.com, Inc.	`0.08ms` from Dubai, AE
88.67.75.245	AS3209 Vodafone GmbH	`18.29ms` from Frankfurt am Main, DE
173.174.53.165	AS11427 Charter Communications Inc	`10.64ms` from Houston, US
31.125.194.5	AS6871 Plusnet	`4.08ms` from London, GB
90.8.162.165	AS3215 Orange S.A.	`4.71ms` from Marseille, FR
31.200.251.213	AS61400 Start2 LLC	`0.77ms` from Moscow, RU
171.36.164.149	AS4837 CHINA UNICOM China169 Backbone	`7.27ms` from Nanning, CN
51.11.220.133	AS8075 Microsoft Corporation	`0.40ms` from Paris, FR
209.180.159.37	AS209 CenturyLink Communications, LLC	`1.00ms` from Phoenix, US
35.170.201.229	AS14618 Amazon.com, Inc.	`0.39ms` from Reston, US
39.135.221.5	AS24400 Shanghai Mobile Communications Co.,Ltd.	`2.66ms` from Shanghai, CN
20.92.241.37	AS8075 Microsoft Corporation	`0.69ms` from Sydney, AU
61.228.246.5	AS3462 Data Communication Business Group	`1.79ms` from Taipei, TW
104.159.96.101	AS396338 Altima Telecom	`7.73ms` from Toronto, CA
89.27.131.133	AS8881 1&1 Versatel GmbH	`0.76ms` from Berlin, DE
68.160.152.5	AS701 Verizon Business	`2.46ms` from Boston, US
102.46.57.85	AS8452 TE-AS	`2.95ms` from Cairo, EG
40.177.104.229	AS16509 Amazon.com, Inc.	`1.80ms` from Calgary, CA
86.48.74.117	AS47292 Sentia Denmark A/S	`1.26ms` from Copenhagen, DK
190.56.134.5	AS14754 TELECOMUNICACIONES DE GUATEMALA, SOCIEDAD ANONIMA	`3.65ms` from Guatemala City, GT
113.183.65.229	AS45899 VNPT Corp	`2.39ms` from Hanoi, VN

Traceroute

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

traceroute -a -n -q1 -f8 -m11 199.123.76.5

traceroute to 199.123.76.5 (199.123.76.5): 11 hops max, 52 byte packets

8 [AS3356] 65.56.131.54 10.119 ms

9 *

10 *

11 *

Measurement taken from

IPinfo ProbeNet in Chicago, US

On January 30th 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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