Autonomous System details

AS1501

Headquarters, USAISC · mail.mil

United States

Stub AS

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AS1501 – Headquarters, USAISC

Field	Value
Country	United States
Website	mail.mil
Hosted domains	0
IPv4 addresses	22,016
IPv6 addresses	0
ASN type	Government
Registry	arin
Allocated	22 years ago on May 12, 2004
Updated	14 years ago on Aug 11, 2011

Netblock	Company	Num of IPs
150.196.240.0/20	Headquarters, USAISC	4,096
155.26.224.0/20	Headquarters, USAISC	4,096
143.86.48.0/23	Headquarters, USAISC	512
143.194.128.0/23	Headquarters, USAISC	512
155.26.48.0/23	Headquarters, USAISC	512
155.26.132.0/23	Headquarters, USAISC	512
158.11.208.0/23	Headquarters, USAISC	512
136.210.224.0/24	Headquarters, USAISC	256
143.70.2.0/24	Headquarters, USAISC	256
143.70.10.0/24	Headquarters, USAISC	256
143.70.16.0/24	Headquarters, USAISC	256
143.70.18.0/24	Headquarters, USAISC	256
143.70.20.0/24	Headquarters, USAISC	256
143.70.21.0/24	Headquarters, USAISC	256
143.70.22.0/24	Headquarters, USAISC	256
143.70.25.0/24	Headquarters, USAISC	256
143.70.26.0/24	Headquarters, USAISC	256
143.70.32.0/24	Headquarters, USAISC	256
143.70.34.0/24	Headquarters, USAISC	256
143.70.35.0/24	Headquarters, USAISC	256
143.70.36.0/24	Headquarters, USAISC	256
143.70.40.0/24	Headquarters, USAISC	256
143.70.41.0/24	Headquarters, USAISC	256
143.70.42.0/24	Headquarters, USAISC	256
143.70.44.0/24	Headquarters, USAISC	256
143.70.45.0/24	Headquarters, USAISC	256
143.73.49.0/24	Headquarters, USAISC	256
143.73.56.0/24	Headquarters, USAISC	256
143.73.90.0/24	Headquarters, USAISC	256
143.73.94.0/24	Headquarters, USAISC	256
143.73.95.0/24	Headquarters, USAISC	256
143.76.48.0/24	Headquarters, USAISC	256
143.76.128.0/24	Headquarters, USAISC	256
143.76.130.0/24	Headquarters, USAISC	256
143.76.137.0/24	Headquarters, USAISC	256
143.86.50.0/24	Headquarters, USAISC	256
143.86.51.0/24	Headquarters, USAISC	256
143.86.57.0/24	Headquarters, USAISC	256
143.86.59.0/24	Headquarters, USAISC	256
143.86.60.0/24	Headquarters, USAISC	256
143.86.61.0/24	Headquarters, USAISC	256
143.86.175.0/24	Headquarters, USAISC	256
143.194.132.0/24	Headquarters, USAISC	256
143.194.133.0/24	Headquarters, USAISC	256
143.194.134.0/24	Headquarters, USAISC	256
143.194.136.0/24	Headquarters, USAISC	256
143.194.137.0/24	Headquarters, USAISC	256
143.194.138.0/24	Headquarters, USAISC	256
143.194.139.0/24	Headquarters, USAISC	256
143.194.142.0/24	Headquarters, USAISC	256
144.104.103.0/24	Headquarters, USAISC	256
144.105.202.0/24	Headquarters, USAISC	256
147.104.104.0/24	Headquarters, USAISC	256
147.104.247.0/24	Headquarters, USAISC	256
150.196.8.0/24	Headquarters, USAISC	256
150.196.240.0/24	Headquarters, USAISC	256
150.196.241.0/24	Headquarters, USAISC	256
150.196.242.0/24	Headquarters, USAISC	256
150.196.244.0/24	Headquarters, USAISC	256
155.20.218.0/24	Headquarters, USAISC	256
155.20.219.0/24	Headquarters, USAISC	256
155.20.251.0/24	Headquarters, USAISC	256
155.26.48.0/24	Headquarters, USAISC	256
155.26.73.0/24	Headquarters, USAISC	256
155.26.84.0/24	Headquarters, USAISC	256
155.26.85.0/24	Headquarters, USAISC	256
155.26.143.0/24	Headquarters, USAISC	256
155.26.200.0/24	Headquarters, USAISC	256
155.26.201.0/24	Headquarters, USAISC	256
155.26.224.0/24	Headquarters, USAISC	256
155.26.234.0/24	Headquarters, USAISC	256
155.26.236.0/24	Headquarters, USAISC	256
155.30.121.0/24	Headquarters, USAISC	256
155.30.124.0/24	Headquarters, USAISC	256
155.30.125.0/24	Headquarters, USAISC	256
155.30.191.0/24	Headquarters, USAISC	256
155.30.221.0/24	Headquarters, USAISC	256
158.11.220.0/24	Headquarters, USAISC	256
158.13.147.0/24	Headquarters, USAISC	256
158.19.24.0/24	Headquarters, USAISC	256
158.19.27.0/24	Headquarters, USAISC	256

There are no known IPv6 addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS1501
                                                OrgID:          AS1501
                                                ASName:         AS1501
                                                ASNumber:       AS1501
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are no domains currently hosted on this ASN.

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Peers

There is 1 peer for this ASN.

Peers	Name
AS1555	United States Department of Defense (DoD)

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Upstreams

There is 1 peer for this ASN.

upstreams	Name
AS1555	United States Department of Defense (DoD)

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Downstreams

There are no downstreams for this ASN.

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ASN API & Database

Pingable IPs

No IPs in this ASN 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
86.81.87.237	AS1136 KPN B.V.	`2.79ms` from Amsterdam, NL
3.161.150.157	AS16509 Amazon.com, Inc.	`0.22ms` from Atlanta, US
76.20.243.157	AS7922 Comcast Cable Communications, LLC	`4.63ms` from Atlanta, US
49.224.186.237	AS9500 One New Zealand Group Limited	`17.28ms` from Auckland, NZ
100.20.192.29	AS16509 Amazon.com, Inc.	`0.20ms` from Boardman, US
181.53.203.29	AS10620 Telmex Colombia S.A.	`7.43ms` from Bogota, CO
168.110.157.61	AS31898 Oracle Corporation	`1.24ms` from Chennai, IN
46.137.160.173	AS16509 Amazon.com, Inc.	`0.10ms` from Dublin, IE
92.75.48.141	AS3209 Vodafone GmbH	`7.26ms` from Frankfurt am Main, DE
102.36.141.77	AS328583 CRAZYWEB TECH (PTY) LTD	`6.89ms` from Johannesburg, ZA
69.227.66.29	AS7018 AT&T Enterprises, LLC	`7.89ms` from Kansas City, US
20.204.30.157	AS8075 Microsoft Corporation	`0.16ms` from Lohogaon, IN
71.172.66.77	AS701 Verizon Business	`1.97ms` from New York City, US
179.109.64.29	AS263578 FacNet Telecom	`9.11ms` from Osasco, BR
88.127.208.173	AS12322 Free SAS	`11.45ms` from Paris, FR
40.87.161.13	AS8075 Microsoft Corporation	`0.56ms` from San Jose, US
201.186.5.109	AS14117 Telefonica del Sur S.A.	`8.04ms` from Santiago, CL
60.108.236.237	AS17676 SoftBank Corp.	`2.51ms` from Tokyo, JP
182.119.232.13	AS4837 CHINA UNICOM China169 Backbone	`1.01ms` from Zhengzhou, CN
99.156.169.237	AS7018 AT&T Enterprises, LLC	`3.12ms` from Dallas, US
86.45.163.77	AS5466 Eircom Limited	`5.18ms` from Dublin, IE
84.158.119.205	AS3320 Deutsche Telekom AG	`5.00ms` from Frankfurt am Main, DE
81.152.99.189	AS2856 British Telecommunications PLC	`14.05ms` from London, GB
194.145.190.237	AS33920 (aq) networks limited	`0.56ms` from London, GB
185.184.69.253	AS49683 MASSIVEGRID LTD	`3.31ms` from London, GB

Traceroute

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

traceroute -a -n -q1 -f4 -m8 155.26.85.168

traceroute to 155.26.85.168 (155.26.85.168): 8 hops max, 52 byte packets

4 [AS63949] 139.162.0.102 9.895 ms

5 [AS20940] 23.56.138.52 0.433 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Singapore, SG

On January 9th 2026

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What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS1501 at robtex.

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