138.138.112.0/22

AS5972 · United States Department of Defense (DoD)

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Summary

Country	United States
Domain	mail.mil
ASN	AS5972
Registry	ARIN
ID	CERNERBLOCK

WHOIS Details

NetHandle:      NET-138-138-0-0-2
OrgID:          DNIC
Parent:         NET-138-138-0-0-1
NetName:        CERNERBLOCK
NetRange:       138.138.0.0 - 138.138.255.255
NetType:        reallocation
RegDate:        2025-08-28
Updated:        2025-08-28
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:      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


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

Nearby Ranges

BGP prefixes that overlap with 138.138.0.0/16

No nearby ranges found.

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

946 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
138.138.113.196	AS5972 United States Department of Defense (DoD)	`3.38ms` from Honolulu, US
138.138.115.140	AS5972 United States Department of Defense (DoD)	`3.35ms` from Honolulu, US
138.138.114.65	AS5972 United States Department of Defense (DoD)	`3.26ms` from Honolulu, US
138.138.112.204	AS5972 United States Department of Defense (DoD)	`3.23ms` from Honolulu, US

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
71.24.51.214	AS7922 Comcast Cable Communications, LLC	`8.59ms` from Ashburn, US
151.213.233.38	AS7029 Windstream Communications LLC	`7.72ms` from Atlanta, US
87.175.7.86	AS3320 Deutsche Telekom AG	`3.13ms` from Berlin, DE
107.134.213.6	AS7018 AT&T Enterprises, LLC	`6.35ms` from Chicago, US
179.211.190.70	AS28573 Claro NXT Telecomunicacoes Ltda	`11.83ms` from Fortaleza, BR
175.178.196.86	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.89ms` from Guangzhou, CN
76.170.191.38	AS20001 Charter Communications Inc	`7.11ms` from Los Angeles, US
103.210.10.102	AS134832 Premier Technology Solutions Pty Ltd	`0.28ms` from Melbourne, AU
94.253.115.118	AS21453 Flex Ltd.	`1.86ms` from Moscow, RU
47.122.93.118	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.22ms` from Nanjing, CN
18.209.201.102	AS14618 Amazon.com, Inc.	`0.19ms` from Reston, US
89.239.129.118	AS12389 PJSC Rostelecom	`12.11ms` from Samara, RU
97.205.131.102	AS6167 Verizon Business	`13.72ms` from Santa Clara, US
189.136.84.246	AS8151 UNINET	`4.55ms` from Santiago de Queretaro, MX
114.35.47.54	AS3462 Data Communication Business Group	`1.05ms` from Taichung, TW
114.47.139.70	AS3462 Data Communication Business Group	`3.67ms` from Taichung, TW
40.115.246.214	AS8075 Microsoft Corporation	`0.15ms` from Tokyo, JP
172.205.165.198	AS8075 Microsoft Corporation	`1.30ms` from Amsterdam, NL
179.216.4.6	AS28573 Claro NXT Telecomunicacoes Ltda	`3.40ms` from Curitiba, BR
169.61.200.70	AS36351 IBM Cloud	`0.82ms` from Dallas, US
172.10.46.182	AS7018 AT&T Enterprises, LLC	`10.80ms` from Dallas, US
2.122.150.246	AS5607 Sky UK Limited	`2.00ms` from Erith, GB
123.207.58.102	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.19ms` from Guangzhou, CN
217.243.67.198	AS3320 Deutsche Telekom AG	`0.91ms` from Hamburg, DE
141.83.45.6	AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	`1.64ms` from Hamburg, DE

Traceroute

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

traceroute -a -n -q1 -f4 -m7 138.138.112.205

traceroute to 138.138.112.205 (138.138.112.205): 7 hops max, 52 byte packets

4 [AS21928] 100.199.0.57 0.089 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Liuzhou, CN

On March 29th 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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