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:        disa.columbus.ns.mbx.arin-registrations@mail.mil
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
143.64.0.0/16	AS58593	Shanghai Blue Cloud Technology Co.,Ltd	65,536
143.106.0.0/16	AS53187	UNIVERSIDADE ESTADUAL DE CAMPINAS	65,536
143.177.0.0/16	AS50266	Pool for fixed WBA users	65,536
143.138.0.0/16	AS5277	Headquarters, USAISC	65,536
143.90.0.0/16	AS4725	SoftBank Corp.	65,536
143.77.0.0/16	AS5277	Headquarters, USAISC	65,536
143.120.0.0/16	AS26439	City of Albuquerque	65,536
143.107.0.0/16	AS28571	UNIVERSIDADE DE SAO PAULO	65,536
143.179.0.0/16	AS50266	Tele2 Nederland B.V.	65,536
143.128.0.0/16	AS2018	University of Kwazulu-Natal	65,536
143.169.0.0/16	AS2611	Universiteit Antwerpen	65,536
143.231.0.0/16	AS1999	U.S. House of Representatives	65,536
143.207.0.0/16	AS19106	Andrews University	65,536
143.104.0.0/16	AS395139	NewYork-Presbyterian Hospital	65,536
143.59.0.0/16	AS12083	WideOpenWest Finance LLC	65,536
143.215.0.0/16	AS2637	Georgia Institute of Technology	65,536
143.205.0.0/16	AS1111	Universitaet Klagenfurt	65,536
143.93.0.0/16	AS2857	Fachhochschule Worms	65,536
143.233.0.0/16	AS2546	Greek Academic & Research Computer Network	65,536
143.227.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.221.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.206.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.129.0.0/16	AS2611	Universiteit Antwerpen	65,536
143.253.0.0/16	AS16509	Amazon.com, Inc.	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
143.118.0.0/16	AS1881	FMV	65,536
143.228.0.0/16	AS1999	U.S. House of Representatives	65,536
143.54.0.0/16	AS19200	Universidade Federal do Rio Grande do Sul	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
143.170.0.0/16	AS16504	Granite Telecommunications LLC	65,536
143.45.0.0/16	AS1649	Headquarters, USAISC	65,536
143.48.0.0/16	AS13748	Cold Spring Harbor Laboratory	65,536
143.168.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.135.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.171.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.191.0.0/16	AS16509	Amazon.com, Inc.	65,536
143.111.0.0/16	AS11773	The University Of Texas M.D. Anderson Cancer Center	65,536
143.88.0.0/16	AS18553	University of West Florida	65,536
143.66.0.0/16	AS13536	Corning Community College	65,536
143.159.0.0/16	AS6871	INFONET Services Corporation	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

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
193.115.103.175	AS7545 TPG Telecom Limited	`12.28ms` from Adelaide, AU
23.222.198.223	AS16625 Akamai Technologies, Inc.	`0.18ms` from Ashburn, US
101.30.160.15	AS4837 CHINA UNICOM China169 Backbone	`9.73ms` from Beijing, CN
182.131.223.255	AS4134 CHINANET-BACKBONE	`8.45ms` from Chengdu, CN
71.218.182.95	AS209 CenturyLink Communications, LLC	`2.10ms` from Denver, US
185.9.238.159	AS9009 M247 Europe SRL	`0.28ms` from Frankfurt am Main, DE
122.171.190.223	AS24560 Bharti Airtel Ltd., Telemedia Services	`2.11ms` from Hyderabad, IN
13.204.10.159	AS16509 Amazon.com, Inc.	`0.13ms` from Mumbai, IN
115.38.139.79	AS18126 Chubu Telecommunications Company, Inc.	`9.72ms` from Osaka, JP
131.206.156.223	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`13.29ms` from Osaka, JP
46.13.124.223	AS13036 T-Mobile Czech Republic a.s.	`7.02ms` from Prague, CZ
2.88.94.207	AS25019 Saudi Telecom Company JSC	`1.71ms` from Riyadh, SA
135.129.146.191	AS13614 All West Communications, Inc.	`2.01ms` from Salt Lake City, US
35.230.39.47	AS396982 Google LLC	`0.16ms` from The Dalles, US
69.221.212.239	AS7018 AT&T Enterprises, LLC	`1.66ms` from Atlanta, US
193.105.163.175	AS13004 Serbian Open Exchange DOO	`0.30ms` from Belgrade, RS
181.234.95.31	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`18.27ms` from Bogota, CO
132.178.226.95	AS46662 Boise State University	`1.05ms` from Boise, US
74.193.169.175	AS19108 Optimum	`18.11ms` from Dallas, US
176.71.10.239	AS1257 Tele2 Sverige AB	`0.45ms` from Goeteborg, SE
112.197.66.191	AS45543 SaiGon Tourist cable Televition Company	`1.25ms` from Ho Chi Minh City, VN
58.177.29.47	AS9269 Hong Kong Broadband Network Ltd.	`0.70ms` from Hong Kong, HK
98.39.245.79	AS7922 Comcast Cable Communications, LLC	`4.53ms` from Houston, US
68.13.129.191	AS22773 Cox Communications Inc.	`7.87ms` from Kansas City, US
86.184.143.63	AS2856 British Telecommunications PLC	`1.88ms` from London, GB

Traceroute

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

traceroute -a -n -q1 -f3 -m8 143.138.35.63

traceroute to 143.138.35.63 (143.138.35.63): 8 hops max, 52 byte packets

3 [AS3356] 4.68.75.233 7.689 ms

4 [AS3356] 4.69.219.222 8.239 ms

5 [AS3356] 8.244.134.50 8.446 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Nagano, JP

On December 14th 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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