All IP Ranges
138.0.0.0/8
AS721 | 138.178.0.0/15

138.178.0.0/15

AS721 · United States Department of Defense (DoD)

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Summary

Country	United States
Domain	navy.mil
ASN	AS721
Registry	ARIN
ID	REGIONAL-ROT1

WHOIS Details

NetHandle:      NET-138-178-0-0-2
OrgID:          NNICN-1
Parent:         NET-138-178-0-0-1
NetName:        REGIONAL-ROT1
NetRange:       138.178.0.0 - 138.178.255.255
NetType:        reallocation
RegDate:        2025-08-14
Updated:        2025-08-14
Source:         ARIN


OrgID:          NNICN-1
OrgName:        Navy Network Information Center (NNIC)
CanAllocate:    
Street:         2465 GUADALCANAL ROAD
Street:         BLDG 1265
City:           VIRGINIA BEACH
State/Prov:     VA
Country:        US
PostalCode:     23459
RegDate:        2006-09-21
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 138.178.0.0/15

Range	ASN	Company	Num of IPs
138.178.0.0/16	AS721	Navy Network Information Center (NNIC)	65,536

Nearby Ranges

BGP prefixes that overlap with 138.0.0.0/8

Range	ASN	Company	Num of IPs
138.110.0.0/16	AS396128	Mount Holyoke College	65,536
138.191.0.0/16	AS12511	Post CH AG	65,536
138.232.0.0/16	AS1110	University of Innsbruck	65,536
138.103.0.0/16	AS15830	AB Sandvik	65,536
138.92.0.0/16	AS11482	Canisius College	65,536
138.246.0.0/16	AS12816	Ludwig-Maximilians-Universitaet Muenchen	65,536
138.90.0.0/16	AS16509	Amazon.com, Inc.	65,536
138.106.0.0/16	AS202116	SCANIA CV AB	65,536
138.41.0.0/16	AS137	DIR-GARR - Roma	65,536
138.111.0.0/16	AS16509	Amazon Technologies Inc.	65,536
138.14.0.0/16	AS8434	Saab AB	65,536
138.86.0.0/16	AS15295	University of Northern Colorado	65,536
138.50.0.0/16	AS367	Headquarters, USAISC	65,536
138.210.0.0/16	AS14921	CenturyLink Communications, LLC	65,536
138.52.0.0/16	AS16509	Amazon.com, Inc.	65,536
138.70.0.0/16	AS16509	Amazon.com, Inc.	65,536
138.15.0.0/16	AS10753	NEC Laboratories America, Inc.	65,536
138.236.0.0/16	AS17234	Gustavus Adolphus College	65,536
138.101.0.0/16	AS9593	Nikkei Inc.	65,536
138.37.0.0/16	AS198864	Queen Mary University of London	65,536
138.210.0.0/16	AS209	CenturyLink Communications, LLC	65,536
138.78.0.0/16	AS396087	St. Mary's College of Maryland	65,536
138.34.0.0/16	AS16509	Amazon.com, Inc.	65,536
138.49.0.0/16	AS3128	University of Wisconsin-La Crosse	65,536
138.237.0.0/16	AS18791	Texas Christian University	65,536
138.50.0.0/16	AS1565	Headquarters, USAISC	65,536
138.220.0.0/16	AS10497	IBRD	65,536
138.240.0.0/16	AS16509	Amazon.com, Inc.	65,536
138.26.0.0/16	AS3452	University of Alabama at Birmingham - University Computer Center	65,536
138.27.0.0/16	AS1540	Headquarters, USAISC	65,536
138.210.0.0/16	AS11398	CenturyLink Communications, LLC	65,536
138.101.0.0/16	AS16509	Nikkei Inc.	65,536
138.130.0.0/16	AS1221	Telstra Limited	65,536
138.217.0.0/16	AS1221	Telstra Limited	65,536
138.189.0.0/16	AS12511	Post CH AG	65,536
138.194.0.0/16	AS6262	imported inetnum object for CIS-56	65,536
138.168.0.0/16	AS637	MARINE CORPS CYBERSPACE OPERATIONS GROUP	65,536
138.210.0.0/16	AS5778	CenturyLink Communications, LLC	65,536
138.73.0.0/16	AS611	Mount Allison University	65,536
138.119.0.0/16	AS611	University of New Brunswick	65,536
138.163.0.0/16	AS637	Navy Network Information Center (NNIC)	65,536
138.131.0.0/16	AS559	CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Developpement	65,536
138.67.0.0/16	AS36704	Colorado School of Mines	65,536
138.80.0.0/16	AS58611	Charles Darwin University	65,536
138.13.0.0/16	AS56	Air Force Systems Networking	65,536
138.77.0.0/16	AS24433	Central Queensland University	65,536
138.180.0.0/16	AS5839	Navy Network Information Center (NNIC)	65,536
138.23.0.0/16	AS6106	University of California, Riverside	65,536
138.156.0.0/16	AS637	MARINE CORPS CYBERSPACE OPERATIONS GROUP	65,536
138.210.0.0/16	AS29817	CenturyLink Communications, LLC	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
182.135.236.143	AS4134 CHINANET-BACKBONE	`4.38ms` from Chengdu, CN
43.141.196.191	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.28ms` from Chengdu, CN
23.215.214.239	AS20940 Akamai International B.V.	`0.72ms` from Chicago, US
54.154.113.95	AS16509 Amazon.com, Inc.	`0.23ms` from Dublin, IE
67.134.218.127	AS209 CenturyLink Communications, LLC	`5.81ms` from Miami, US
54.176.223.143	AS16509 Amazon.com, Inc.	`0.16ms` from San Jose, US
222.108.200.191	AS4766 Korea Telecom	`1.42ms` from Seoul, KR
120.78.91.207	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`1.57ms` from Shenzhen, CN
192.164.108.207	AS8447 A1 Telekom Austria AG	`14.97ms` from Vienna, AT
83.238.213.207	AS12741 Netia SA	`1.41ms` from Wrocław, PL
20.42.17.47	AS8075 Microsoft Corporation	`0.38ms` from Ashburn, US
81.183.92.95	AS5483 Magyar Telekom Plc.	`0.69ms` from Budapest, HU
160.176.126.79	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`5.21ms` from Casablanca, MA
183.65.42.111	AS4134 CHINANET-BACKBONE	`2.07ms` from Chongqing, CN
178.166.30.127	AS12353 Vodafone Portugal	`5.83ms` from Lisbon, PT
69.113.108.111	AS6128 Cablevision Systems Corp.	`8.33ms` from Newark, US
61.130.44.111	AS4134 CHINANET-BACKBONE	`8.44ms` from Ningbo, CN
123.198.29.111	AS2527 Sony Network Communications Inc.	`9.67ms` from Osaka, JP
183.102.62.159	AS4766 Korea Telecom	`1.24ms` from Seoul, KR
183.123.116.79	AS4766 Korea Telecom	`3.36ms` from Seoul, KR
125.226.226.239	AS3462 Data Communication Business Group	`1.32ms` from Taipei, TW
108.170.159.79	AS40788 Start Communications	`7.03ms` from Toronto, CA
94.198.221.223	AS9123 JSC "TIMEWEB"	`0.47ms` from Almaty, KZ
89.12.166.79	AS6805 Telefonica Germany GmbH & Co.OHG	`2.96ms` from Berlin, DE
20.162.78.111	AS8075 Microsoft Corporation	`0.18ms` from Cardiff, GB

Traceroute

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

traceroute -a -n -q1 -m4 138.179.233.182

traceroute to 138.179.233.182 (138.179.233.182): 4 hops max, 52 byte packets

1 [AS749] 11.72.200.193 3.767 ms

2 *

3 *

4 *

Measurement taken from

IPinfo ProbeNet in Guangzhou, CN

On December 28th 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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