All IP Ranges
143.0.0.0/8
AS721 | 143.138.0.0/15

143.138.0.0/15

AS721 · United States Department of Defense (DoD)

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Summary

Country	United States
Domain	mail.mil
ASN	AS721
Registry	ARIN
ID	KOREA1

WHOIS Details

NetHandle:      NET-143-138-0-0-2
OrgID:          HEADQU-3
Parent:         NET-143-138-0-0-1
NetName:        KOREA1
NetRange:       143.138.0.0 - 143.138.255.255
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

Overlapping Ranges

BGP prefixes that are contained by 143.138.0.0/15

Range	ASN	Company	Num of IPs
143.138.0.0/16	AS5277	Headquarters, USAISC	65,536
143.138.0.0/16	AS721	Headquarters, USAISC	65,536

Nearby Ranges

BGP prefixes that overlap with 143.0.0.0/8

Range	ASN	Company	Num of IPs
143.207.0.0/16	AS19106	Andrews University	65,536
143.228.0.0/16	AS1999	U.S. House of Representatives	65,536
143.118.0.0/16	AS1881	FMV	65,536
143.248.0.0/16	AS1781	Korea Advanced Institute of Science and Technology	65,536
143.221.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.240.0.0/16	AS174	Performance Systems International, Incorporated	65,536
143.191.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.214.0.0/16	AS1602	Headquarters, USAISC	65,536
143.171.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.168.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.212.0.0/16	AS1602	Headquarters, USAISC	65,536
143.206.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.227.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.253.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.59.0.0/16	AS12083	WideOpenWest Finance LLC	65,536
143.74.0.0/16	AS1540	Headquarters, USAISC	65,536
143.205.0.0/16	AS1111	Universitaet Klagenfurt	65,536
143.213.0.0/16	AS1602	Headquarters, USAISC	65,536
143.170.0.0/16	AS16504	Granite Telecommunications LLC	65,536
143.45.0.0/16	AS1649	Headquarters, USAISC	65,536
143.135.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.74.0.0/16	AS1516	Headquarters, USAISC	65,536
143.84.0.0/16	AS1540	Headquarters, USAISC	65,536
143.79.0.0/16	AS1540	Headquarters, USAISC	65,536
143.67.0.0/16	AS13536	Jamestown Community College	65,536
143.239.0.0/16	AS1213	Campus Network	65,536
143.50.0.0/16	AS1114	Universitaet Graz	65,536
143.74.0.0/16	AS1600	Headquarters, USAISC	65,536
143.84.0.0/16	AS1590	Headquarters, USAISC	65,536
143.69.0.0/16	AS1590	Headquarters, USAISC	65,536
143.238.0.0/16	AS1221	Telstra Limited	65,536
143.101.0.0/16	AS13636	NEC Corporation of America	65,536
143.102.0.0/16	AS13636	NEC Corporation of America	65,536
143.164.0.0/16	AS12331	Audi AG, Ingolstadt	65,536
143.216.0.0/16	AS136572	The Office of the Chief Information Officer (OCIO)	65,536
143.108.0.0/16	AS1251	FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO SÃO PAULO	65,536
143.225.0.0/16	AS137	UNI-Napoli Federico II	65,536
143.176.0.0/16	AS13127	Tele2 Nederland B.V.	65,536
143.121.0.0/16	AS1103	Universitair Medisch Centrum Utrecht	65,536
143.69.0.0/16	AS1540	Headquarters, USAISC	65,536
143.46.0.0/16	AS1637	Headquarters, USAISC	65,536
143.48.0.0/16	AS13748	Cold Spring Harbor Laboratory	65,536
143.73.0.0/16	AS1501	Headquarters, USAISC	65,536
143.69.0.0/16	AS1493	Headquarters, USAISC	65,536
143.76.0.0/16	AS1501	Headquarters, USAISC	65,536
143.76.0.0/16	AS1502	Headquarters, USAISC	65,536
143.111.0.0/16	AS11773	The University Of Texas M.D. Anderson Cancer Center	65,536
143.76.0.0/16	AS1540	Headquarters, USAISC	65,536
143.66.0.0/16	AS13536	Corning Community College	65,536
143.231.0.0/16	AS1999	U.S. House of Representatives	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

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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
154.201.241.175	AS132839 POWER LINE DATACENTER	`1.08ms` from Hong Kong, HK
47.19.45.15	AS6128 Cablevision Systems Corp.	`2.90ms` from New York City, US
88.175.242.111	AS12322 Free SAS	`8.00ms` from Paris, FR
24.187.107.63	AS6128 Cablevision Systems Corp.	`2.79ms` from Piscataway, US
114.25.214.63	AS3462 Data Communication Business Group	`1.31ms` from Taipei, TW
171.115.215.255	AS4134 CHINANET-BACKBONE	`9.11ms` from Wuhan, CN
69.234.244.79	AS135629 Ningxia West Cloud Data Technology Co.Ltd.	`0.51ms` from Zhongwei, CN
54.200.74.63	AS16509 Amazon.com, Inc.	`0.17ms` from Boardman, US
191.107.215.223	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`5.85ms` from Bogota, CO
72.176.7.191	AS11427 Charter Communications Inc	`7.09ms` from Dallas, US
40.129.12.15	AS7029 Windstream Communications LLC	`0.45ms` from Dallas, US
109.145.142.255	AS2856 British Telecommunications PLC	`3.59ms` from Erith, GB
89.236.66.255	AS30798 TNNet Oy	`4.60ms` from Helsinki, FI
45.78.75.143	AS25820 IT7 Networks Inc	`0.27ms` from Los Angeles, US
154.58.169.255	AS204170 Awaser Oman LLC	`1.92ms` from Muscat, OM
82.164.219.191	AS2119 Telenor Norge AS	`5.96ms` from Oslo, NO
58.246.138.159	AS17621 China Unicom Shanghai network	`2.19ms` from Shanghai, CN
14.202.103.207	AS7545 TPG Telecom Limited	`1.09ms` from Sydney, AU
60.119.211.111	AS17676 SoftBank Corp.	`3.18ms` from Tokyo, JP
106.167.181.127	AS2516 KDDI CORPORATION	`5.33ms` from Tokyo, JP
120.132.35.239	AS23724 IDC, China Telecommunications Corporation	`2.47ms` from Beijing, CN
73.126.6.31	AS7922 Comcast Cable Communications, LLC	`11.03ms` from Boston, US
121.213.170.47	AS1221 Telstra Limited	`1.72ms` from Brisbane, AU
73.44.21.143	AS7922 Comcast Cable Communications, LLC	`5.92ms` from Chicago, US
101.71.210.239	AS4837 CHINA UNICOM China169 Backbone	`4.65ms` from Hangzhou, CN

Traceroute

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

traceroute -a -n -q1 -f4 -m8 143.138.105.60

traceroute to 143.138.105.60 (143.138.105.60): 8 hops max, 52 byte packets

4 [AS3356] 4.69.219.222 167.636 ms

5 [AS3356] 8.244.134.50 207.339 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Atlanta, US

On December 6th 2025

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.

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