137.9.104.0/21

AS56 · United States Department of Defense (DoD)

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Summary

Country	United States
Domain	mail.mil
ASN	AS56
Parent Range	137.9.0.0/16
Registry	ARIN
ID	ANDREWS2-NET

WHOIS Details

NetHandle:      NET-137-9-0-0-2
OrgID:          7ESG
Parent:         NET-137-9-0-0-1
NetName:        ANDREWS2-NET
NetRange:       137.9.0.0 - 137.9.255.255
NetType:        reallocation
RegDate:        2025-08-19
Updated:        2025-08-19
Source:         ARIN


OrgID:          7ESG
OrgName:        Air Force Systems Networking
CanAllocate:    
Street:         501 EAST MOORE DR. BLDG 884 RM 1100 GUNTHER ANNEX
City:           MAXWELL AFB
State/Prov:     AL
Country:        US
PostalCode:     36114
RegDate:        2008-06-05
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:        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 137.9.104.0/21

Range	ASN	Company	Num of IPs
137.9.0.0/16	AS56	Air Force Systems Networking	65,536

Nearby Ranges

BGP prefixes that overlap with 137.9.0.0/16

Range	ASN	Company	Num of IPs
137.9.0.0/16	AS56	Air Force Systems Networking	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
123.57.202.229	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`2.01ms` from Beijing, CN
50.241.117.133	AS7922 Comcast Cable Communications, LLC	`4.93ms` from Boston, US
194.116.246.5	AS12310 iNES GROUP SRL	`0.23ms` from Bucharest, RO
63.122.176.5	AS701 Verizon Business	`0.49ms` from Dallas, US
86.40.207.53	AS5466 Eircom Limited	`3.85ms` from Dublin, IE
18.184.103.181	AS16509 Amazon.com, Inc.	`0.17ms` from Frankfurt am Main, DE
4.144.35.53	AS8075 Microsoft Corporation	`0.31ms` from Hong Kong, HK
178.20.155.213	AS42331 PE Freehost	`0.46ms` from Kyiv, UA
221.226.153.21	AS4134 CHINANET-BACKBONE	`1.15ms` from Nanjing, CN
221.185.63.37	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.34ms` from Osaka, JP
91.166.114.245	AS12322 Free SAS	`2.33ms` from Paris, FR
91.151.126.213	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`2.06ms` from Paris, FR
98.163.177.213	AS22773 Cox Communications Inc.	`0.78ms` from Phoenix, US
172.179.11.149	AS8075 Microsoft Corporation	`0.80ms` from Quincy, US
152.243.128.213	AS26599 TELEFÔNICA BRASIL S.A	`1.32ms` from Sao Paulo, BR
24.83.48.101	AS6327 Shaw Communications	`3.22ms` from Seattle, US
101.79.73.213	AS38661 abcle	`1.21ms` from Seoul, KR
126.4.92.149	AS17676 SoftBank Corp.	`7.36ms` from Tokyo, JP
185.65.235.101	AS35339 AtNOC GmbH	`2.67ms` from Vienna, AT
58.136.92.85	AS133481 AIS Fibre	`4.71ms` from Bangkok, TH
1.4.139.117	AS23969 TOT Public Company Limited	`8.05ms` from Bangkok, TH
23.36.38.69	AS20940 Akamai International B.V.	`0.56ms` from Boston, US
20.110.124.37	AS8075 Microsoft Corporation	`0.23ms` from Boydton, US
186.251.52.37	AS262824 A C ROCHA INFORMATICA LTDA	`15.21ms` from Chapeco, BR
170.215.31.165	AS5650 Frontier Communications of America, Inc.	`6.43ms` from Chicago, US

Traceroute

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

traceroute -a -n -q1 -f5 -m9 137.9.110.26

traceroute to 137.9.110.26 (137.9.110.26): 9 hops max, 52 byte packets

5 [AS8966] 5.195.70.160 4.626 ms

6 [AS8966] 194.170.186.89 6.372 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Dubai, AE

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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