166.21.240.0/21

AS6075 · Lockheed Martin Corporation

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Summary

Country	United States
Domain	lmco.com
ASN	AS6075
Registry	ARIN
ID	MMC2

WHOIS Details

NetHandle:      NET-166-21-0-0-1
OrgID:          LHMC
Parent:         NET-166-0-0-0-0
NetName:        MMC2
NetRange:       166.21.0.0 - 166.31.255.255
NetType:        allocation
RegDate:        1993-06-21
Updated:        2021-12-14
Source:         ARIN


OrgID:          LHMC
OrgName:        Lockheed Martin Corporation
CanAllocate:    
Street:         1401 Del Norte
City:           Denver
State/Prov:     CO
Country:        US
PostalCode:     80221
Comment:        Unauthorized use of this system may be subject to disciplinary action, and
Comment:        if such use is violative of state and federal laws it may be subject to
Comment:        legal action as well. Reminder: Information transmitted to a foreign person
Comment:        on this network may be subject to US Export Control laws. Contact your
Comment:        Export Coordinator for assistance.
RegDate:        1970-01-01
Updated:        2020-10-12
OrgAdminHandle: LMN-ORG-ARIN
OrgTechHandle:  LMN-ORG-ARIN
OrgAbuseHandle: LMN-ORG-ARIN
Source:         ARIN


POCHandle:      LMN-ORG-ARIN
IsRole:         Y
LastName:       Lockheed Martin Corporation
FirstName:      
Street:         1401 Del Norte St.
City:           Denver
State/Prov:     CO
Country:        US
PostalCode:     80221
RegDate:        1970-01-01
Updated:        2025-07-10
OfficePhone:    +1-303-430-2064
Mailbox:        lm-nic@lmco.com
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 166.21.0.0/16

No nearby ranges found.

Hosted domains

There are 429 domain names hosted across 7 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP

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
49.232.225.37	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.97ms` from Beijing, CN
121.15.232.5	AS4134 CHINANET BACKBONE	`3.24ms` from Guangzhou, CN
79.209.228.117	AS3320 Deutsche Telekom AG	`3.85ms` from Hamburg, DE
72.176.240.245	AS11427 Charter Communications Inc	`11.36ms` from Houston, US
203.7.7.181	AS18371 Neighbourhood Cable	`7.37ms` from Melbourne, AU
200.178.144.101	AS4230 CLARO S.A.	`2.37ms` from Porto Alegre, BR
213.88.44.133	AS12714 PJSC MegaFon	`17.29ms` from Samara, RU
121.167.70.5	AS4766 Korea Telecom	`1.64ms` from Seoul, KR
36.231.66.85	AS3462 Data Communication Business Group	`1.29ms` from Taipei, TW
99.170.156.133	AS7018 AT&T Enterprises, LLC	`15.29ms` from Atlanta, US
45.160.58.245	AS268395 G7 MS EIRELI - ME	`17.21ms` from Chapeco, BR
183.71.242.37	AS4134 CHINANET BACKBONE	`1.89ms` from Chongqing, CN
74.141.3.245	AS10796 Charter Communications Inc	`11.19ms` from Columbus, US
59.45.237.37	AS4134 CHINANET BACKBONE	`5.79ms` from Dalian, CN
120.240.43.5	AS9808 China Mobile Communications Group Co., Ltd.	`6.48ms` from Guangzhou, CN
211.222.250.5	AS4766 Korea Telecom	`0.76ms` from Incheon, KR
1.252.130.5	AS9318 SK Broadband Co Ltd	`6.92ms` from Incheon, KR
221.133.174.5	AS9689 SK Broadband Co Ltd	`7.04ms` from Incheon, KR
159.146.78.5	AS12735 TurkNet Iletisim Hizmetleri A.S.	`0.24ms` from Istanbul, TR
97.190.171.5	AS6167 Verizon Business	`15.40ms` from Los Angeles, US
174.176.178.85	AS7922 Comcast Cable Communications, LLC	`7.88ms` from Miami, US
84.186.38.5	AS3320 Deutsche Telekom AG	`5.18ms` from Munich, DE
100.35.78.245	AS701 Verizon Business	`2.08ms` from New York City, US
97.102.159.245	AS33363 Charter Communications, Inc	`11.76ms` from Orlando, US
126.130.221.101	AS17676 SoftBank Corp.	`4.67ms` from Osaka, JP

Traceroute

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

traceroute -a -n -q1 -f2 -m6 166.21.246.116

traceroute to 166.21.246.116 (166.21.246.116): 6 hops max, 52 byte packets

2 [AS8554] 82.97.0.34 0.183 ms

3 [AS8554] 82.97.0.154 19.835 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Valbonne, FR

On April 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.

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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