21.23.7.0/24

AS749 · United States Department of Defense (DoD)

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Summary

Country	United States
Domain	mail.mil
ASN	AS749
Parent Range	21.0.0.0/8
Registry	ARIN
ID	DNIC-SNET-021

WHOIS Details

NetHandle:      NET-21-0-0-0-2
OrgID:          DNIC
Parent:         NET-21-0-0-0-1
NetName:        DNIC-SNET-021
NetRange:       21.0.0.0 - 21.255.255.255
NetType:        reallocation
RegDate:        2025-09-05
Updated:        2025-09-05
Source:         ARIN


OrgID:          DNIC
OrgName:        DoD Network Information Center
CanAllocate:    
Street:         3990 E. Broad Street
City:           Columbus
State/Prov:     OH
Country:        US
PostalCode:     43218
RegDate:        1970-01-01
Updated:        2025-03-13
OrgAdminHandle: MIL-HSTMST-ARIN
OrgTechHandle:  MIL-HSTMST-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


POCHandle:      MIL-HSTMST-ARIN
IsRole:         Y
LastName:       Network DoD
FirstName:      
Street:         DISA-Columbus
Street:         300 North James Road
City:           Whitehall
State/Prov:     OH
Country:        US
PostalCode:     43213
RegDate:        1993-05-26
Updated:        2026-02-12
OfficePhone:    +1-844-347-2457
Mailbox:        disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 21.23.7.0/24

Range	ASN	Company	Num of IPs
21.0.0.0/8	AS749	DoD Network Information Center	16,777,216

Nearby Ranges

BGP prefixes that overlap with 21.23.0.0/16

Range	ASN	Company	Num of IPs
21.0.0.0/8	AS749	DoD Network Information Center	16,777,216

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
101.100.149.120	AS9790 Two Degrees Networks Limited	`1.16ms` from Auckland, NZ
186.125.142.152	AS7303 Telecom Argentina S.A.	`4.80ms` from Buenos Aires, AR
68.55.99.168	AS7922 Comcast Cable Communications, LLC	`10.23ms` from Chicago, US
46.137.40.72	AS16509 Amazon.com, Inc.	`0.23ms` from Dublin, IE
79.216.18.232	AS3320 Deutsche Telekom AG	`3.54ms` from Duesseldorf, DE
24.4.20.232	AS7922 Comcast Cable Communications, LLC	`2.56ms` from Fremont, US
83.227.215.40	AS8434 Telenor Sverige AB	`2.30ms` from Goeteborg, SE
113.184.104.24	AS45899 VNPT Corp	`3.74ms` from Ho Chi Minh City, VN
88.20.253.184	AS3352 TELEFONICA DE ESPANA S.A.U.	`9.12ms` from Madrid, ES
118.16.41.120	AS4713 NTT DOCOMO BUSINESS,Inc.	`8.45ms` from Osaka, JP
179.233.113.200	AS28573 Claro NXT Telecomunicacoes Ltda	`9.27ms` from Rio de Janeiro, BR
13.91.207.104	AS8075 Microsoft Corporation	`0.55ms` from San Jose, US
185.251.219.120	AS31214 TIS Dialog LLC	`7.01ms` from Vilnius, LT
75.12.129.24	AS7018 AT&T Enterprises, LLC	`12.67ms` from Atlanta, US
52.184.182.232	AS8075 Microsoft Corporation	`0.16ms` from Boydton, US
128.210.17.120	AS17 Purdue University	`5.42ms` from Chicago, US
86.26.102.56	AS5089 Virgin Media Limited	`6.35ms` from London, GB
2.98.131.184	AS13285 TalkTalk Communications Limited	`1.94ms` from Manchester, GB
37.114.10.24	AS21176 Engineering D.HUB S.p.A.	`3.09ms` from Milan, IT
60.217.25.8	AS4837 CHINA UNICOM China169 Backbone	`4.14ms` from Qingdao, CN
63.205.4.168	AS7018 AT&T Enterprises, LLC	`4.18ms` from Redding, US
201.198.211.120	AS11830 Instituto Costarricense de Electricidad y Telecom.	`4.28ms` from San Pedro, CR
95.134.247.104	AS214483 FiberPower LLC	`1.07ms` from Singapore, SG
1.161.242.216	AS3462 Data Communication Business Group	`1.27ms` from Taipei, TW
82.80.180.8	AS8551 Bezeq International Ltd.	`7.46ms` from Tel Aviv, IL

Traceroute

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

traceroute -a -n -q1 -f2 -m5 21.23.7.135

traceroute to 21.23.7.135 (21.23.7.135): 5 hops max, 52 byte packets

2 [AS24961] 62.141.47.8 0.197 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Duesseldorf, DE

On February 16th 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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