158.243.121.0/24

AS637 · United States Department of Defense (DoD)

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Summary

Country	United States
Domain	usmc.mil
ASN	AS637
Parent Range	158.243.0.0/16
Registry	ARIN
ID	USMC-MARFORRES

WHOIS Details

NetHandle:      NET-158-243-0-0-2
OrgID:          UNOC
Parent:         NET-158-243-0-0-1
NetName:        USMC-MARFORRES
NetRange:       158.243.0.0 - 158.243.255.255
NetType:        reallocation
RegDate:        2025-08-13
Updated:        2025-08-13
Source:         ARIN


OrgID:          UNOC
OrgName:        MARINE CORPS CYBERSPACE OPERATIONS GROUP
CanAllocate:    
Street:         COMMANDING OFFICER, MCNOSC
Street:         27410 HOT PATCH ROAD
City:           QUANTICO
State/Prov:     VA
Country:        US
PostalCode:     22134
Comment:        Mailbox:  MCCOG_NIC_ADMINS@USMC.MIL
RegDate:        1997-07-21
Updated:        2025-09-12
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:        2026-02-12
OfficePhone:    +1-844-347-2457
Mailbox:        disa.columbus.ns.mbx.arin-registrations@mail.mil
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 158.243.121.0/24

Range	ASN	Company	Num of IPs
158.243.0.0/16	AS637	MARINE CORPS CYBERSPACE OPERATIONS GROUP	65,536

Nearby Ranges

BGP prefixes that overlap with 158.243.0.0/16

Range	ASN	Company	Num of IPs
158.243.0.0/16	AS637	MARINE CORPS CYBERSPACE OPERATIONS GROUP	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
121.57.147.56	AS4134 CHINANET-BACKBONE	`6.99ms` from Hohhot, CN
109.180.247.120	AS2856 British Telecommunications PLC	`5.17ms` from London, GB
131.145.32.168	AS8075 Microsoft Corporation	`0.20ms` from London, GB
97.190.56.248	AS6167 Verizon Business	`12.28ms` from Los Angeles, US
212.146.188.200	AS212661 Oman Future Telecommunications Company SAOC	`0.42ms` from Muscat, OM
49.77.103.152	AS4134 CHINANET-BACKBONE	`2.97ms` from Nanjing, CN
37.206.191.72	AS3269 Telecom Italia S.p.A.	`7.03ms` from Rome, IT
81.200.252.168	AS41148 Zolotaya Linia JSC.	`9.05ms` from Samara, RU
151.192.171.72	AS9506 Singtel Fibre Broadband	`1.74ms` from Singapore, SG
180.12.199.120	AS4713 NTT DOCOMO BUSINESS,Inc.	`10.61ms` from Tokyo, JP
78.88.142.8	AS29314 VECTRA S.A.	`13.88ms` from Warsaw, PL
190.77.113.136	AS8048 CANTV Servicios, Venezuela	`13.04ms` from Willemstad, CW
190.75.234.232	AS8048 CANTV Servicios, Venezuela	`10.25ms` from Willemstad, CW
20.44.111.56	AS8075 Microsoft Corporation	`0.31ms` from Boydton, US
176.241.8.136	AS20845 DIGI Tavkozlesi es Szolgaltato Kft.	`9.83ms` from Budapest, HU
182.68.103.248	AS24560 Bharti Airtel Ltd., Telemedia Services	`6.27ms` from Delhi, IN
91.48.54.168	AS3320 Deutsche Telekom AG	`2.36ms` from Duesseldorf, DE
91.34.83.248	AS3320 Deutsche Telekom AG	`7.78ms` from Frankfurt am Main, DE
206.85.192.168	AS33647 Yadkin Valley Telephone	`4.82ms` from Lenoir, US
97.167.163.184	AS6167 Verizon Business	`9.11ms` from Los Angeles, US
201.170.18.232	AS8151 UNINET	`4.01ms` from Los Angeles, US
185.181.153.232	AS44407 Linkt SAS	`2.09ms` from Paris, FR
189.146.212.24	AS8151 UNINET	`3.85ms` from Santiago de Queretaro, MX
126.13.59.88	AS17676 SoftBank Corp.	`6.15ms` from Tokyo, JP
153.127.75.56	AS7684 SAKURA Internet Inc.	`16.51ms` from Tokyo, JP

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 158.243.121.156

traceroute to 158.243.121.156 (158.243.121.156): 8 hops max, 52 byte packets

4 [AS174] 154.54.73.242 6.956 ms

5 [AS174] 154.54.75.149 9.544 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Kettering, GB

On March 13th 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.

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