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
143.129.0.0/16	AS2611	Universiteit Antwerpen	65,536
143.215.0.0/16	AS2637	Georgia Institute of Technology	65,536
143.94.0.0/16	AS2497	FUJIFILM Business Innovation Corp. Information & Communication Systems	65,536
143.248.0.0/16	AS1781	Korea Advanced Institute of Science and Technology	65,536
143.233.0.0/16	AS2546	Greek Academic & Research Computer Network	65,536
143.169.0.0/16	AS2611	Universiteit Antwerpen	65,536
143.224.0.0/16	AS2036	Joanneum Research	65,536
143.171.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.221.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.253.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.46.0.0/16	AS1637	Headquarters, USAISC	65,536
143.199.0.0/16	AS21680	Empower Retirement, LLC	65,536
143.189.0.0/16	AS2527	Sony Network Communications Inc.	65,536
143.161.0.0/16	AS206228	Andritz AG	65,536
143.205.0.0/16	AS1111	Universitaet Klagenfurt	65,536
143.74.0.0/16	AS1540	Headquarters, USAISC	65,536
143.168.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.135.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.69.0.0/16	AS1540	Headquarters, USAISC	65,536
143.206.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.134.0.0/16	AS1540	Headquarters, USAISC	65,536
143.227.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.79.0.0/16	AS1540	Headquarters, USAISC	65,536
143.84.0.0/16	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
143.59.0.0/16	AS12083	WideOpenWest Finance LLC	65,536
143.212.0.0/16	AS1602	Headquarters, USAISC	65,536
143.214.0.0/16	AS1602	Headquarters, USAISC	65,536
143.213.0.0/16	AS1602	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	AS1493	Headquarters, USAISC	65,536
143.191.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.48.0.0/16	AS13748	Cold Spring Harbor Laboratory	65,536
143.76.0.0/16	AS1501	Headquarters, USAISC	65,536
143.73.0.0/16	AS1501	Headquarters, USAISC	65,536
143.76.0.0/16	AS1502	Headquarters, USAISC	65,536
143.74.0.0/16	AS1516	Headquarters, USAISC	65,536
143.111.0.0/16	AS11773	The University Of Texas M.D. Anderson Cancer Center	65,536
143.50.0.0/16	AS1114	Universitaet Graz	65,536
143.66.0.0/16	AS13536	Corning Community College	65,536
143.200.0.0/16	AS3128	University of Wisconsin - Green Bay	65,536

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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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
74.124.99.79	AS7782 Alaska Communications Systems Group, Inc.	`3.06ms` from Anchorage, US
73.184.119.15	AS7922 Comcast Cable Communications, LLC	`3.24ms` from Atlanta, US
89.236.66.255	AS30798 TNNet Oy	`4.46ms` from Helsinki, FI
107.141.51.127	AS7018 AT&T Enterprises, LLC	`7.46ms` from Miami, US
96.225.29.111	AS701 Verizon Business	`1.26ms` from New York City, US
190.11.132.143	AS13585 Power VT S.A.	`10.35ms` from Rosario, AR
67.171.22.111	AS7922 Comcast Cable Communications, LLC	`5.30ms` from Seattle, US
133.175.28.175	AS2519 ARTERIA Networks Corporation	`3.80ms` from Tokyo, JP
153.197.161.15	AS4713 NTT DOCOMO BUSINESS,Inc.	`7.44ms` from Tokyo, JP
31.62.34.239	AS5617 Orange Polska Spolka Akcyjna	`16.83ms` from Warsaw, PL
106.201.188.111	AS24560 Bharti Airtel Ltd., Telemedia Services	`2.89ms` from Ahmedabad, IN
67.235.239.255	AS209 CenturyLink Communications, LLC	`9.79ms` from Atlanta, US
104.229.29.239	AS11351 Charter Communications Inc	`15.98ms` from Chicago, US
85.192.37.127	AS210644 AEZA INTERNATIONAL LTD	`0.47ms` from Frankfurt am Main, DE
179.42.240.255	AS10269 Belize Telemedia Limited	`18.47ms` from Miami, US
76.108.232.175	AS7922 Comcast Cable Communications, LLC	`5.17ms` from Miami, US
37.45.233.111	AS6697 Republican Unitary Telecommunication Enterprise Beltelecom	`1.69ms` from Minsk, BY
221.170.39.31	AS2518 BIGLOBE Inc.	`13.48ms` from Osaka, JP
99.184.50.63	AS7018 AT&T Enterprises, LLC	`3.46ms` from San Jose, US
119.202.112.223	AS4766 Korea Telecom	`5.97ms` from Seoul, KR
126.15.53.47	AS17676 SoftBank Corp.	`3.08ms` from Tokyo, JP
77.93.60.31	AS43022 Seech-Infocom Ltd.	`8.36ms` from Kyiv, UA
166.88.198.159	AS149440 Evoxt Enterprise	`0.39ms` from London, GB
4.250.50.207	AS8075 Microsoft Corporation	`0.20ms` from London, GB
202.119.115.15	AS4538 China Education and Research Network Center	`14.39ms` from Nanjing, CN

Traceroute

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

traceroute -a -n -q1 -f3 -m7 143.139.167.145

traceroute to 143.139.167.145 (143.139.167.145): 7 hops max, 52 byte packets

3 [AS1299] 62.115.166.204 5.91 ms

4 [AS1299] 62.115.186.43 3.982 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Ceske Budejovice, CZ

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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