AS number details

AS1637

Headquarters, USAISC · mail.mil

United States

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AS1637 – Headquarters, USAISC

Field	Value
Country	United States
Website	mail.mil
Hosted domains	0
Number of IPv4	200,960
Number of IPv6	1,208,925,819,614,629,174,706,176
ASN type	Government
Registry	arin
Allocated	22 years ago on May 12, 2004
Updated	14 years ago on Aug 24, 2011

Netblock	Company	Num of IPs
143.46.0.0/16	Headquarters, USAISC	65,536
155.5.0.0/16	Headquarters, USAISC	65,536
155.6.0.0/16	Headquarters, USAISC	65,536
143.68.152.0/21	Headquarters, USAISC	2,048
6.134.24.0/22	Headquarters, USAISC	1,024
143.46.116.0/22	Headquarters, USAISC	1,024
143.46.120.0/22	Headquarters, USAISC	1,024
143.46.164.0/22	Headquarters, USAISC	1,024
143.46.8.0/23	Headquarters, USAISC	512
143.46.128.0/23	Headquarters, USAISC	512
143.46.130.0/23	Headquarters, USAISC	512
143.46.134.0/23	Headquarters, USAISC	512
155.5.122.0/23	Headquarters, USAISC	512
155.5.142.0/23	Headquarters, USAISC	512
155.5.152.0/23	Headquarters, USAISC	512
6.16.88.0/24	Headquarters, USAISC	256
6.16.89.0/24	Headquarters, USAISC	256
143.46.5.0/24	Headquarters, USAISC	256
143.46.10.0/24	Headquarters, USAISC	256
143.46.11.0/24	Headquarters, USAISC	256
143.46.12.0/24	Headquarters, USAISC	256
143.46.17.0/24	Headquarters, USAISC	256
143.46.18.0/24	Headquarters, USAISC	256
143.46.20.0/24	Headquarters, USAISC	256
143.46.21.0/24	Headquarters, USAISC	256
143.46.22.0/24	Headquarters, USAISC	256
143.46.23.0/24	Headquarters, USAISC	256
143.46.24.0/24	Headquarters, USAISC	256
143.46.25.0/24	Headquarters, USAISC	256
143.46.26.0/24	Headquarters, USAISC	256
143.46.27.0/24	Headquarters, USAISC	256
143.46.32.0/24	Headquarters, USAISC	256
143.46.33.0/24	Headquarters, USAISC	256
143.46.34.0/24	Headquarters, USAISC	256
143.46.35.0/24	Headquarters, USAISC	256
143.46.36.0/24	Headquarters, USAISC	256
143.46.37.0/24	Headquarters, USAISC	256
143.46.39.0/24	Headquarters, USAISC	256
143.46.48.0/24	Headquarters, USAISC	256
143.46.49.0/24	Headquarters, USAISC	256
143.46.50.0/24	Headquarters, USAISC	256
143.46.51.0/24	Headquarters, USAISC	256
143.46.53.0/24	Headquarters, USAISC	256
143.46.60.0/24	Headquarters, USAISC	256
143.46.110.0/24	Headquarters, USAISC	256
143.46.140.0/24	Headquarters, USAISC	256
143.46.141.0/24	Headquarters, USAISC	256
143.46.142.0/24	Headquarters, USAISC	256
143.46.143.0/24	Headquarters, USAISC	256
143.46.144.0/24	Headquarters, USAISC	256
143.46.145.0/24	Headquarters, USAISC	256
143.46.146.0/24	Headquarters, USAISC	256
143.46.147.0/24	Headquarters, USAISC	256
143.46.150.0/24	Headquarters, USAISC	256
143.46.151.0/24	Headquarters, USAISC	256
143.46.158.0/24	Headquarters, USAISC	256
143.46.161.0/24	Headquarters, USAISC	256
143.46.168.0/24	Headquarters, USAISC	256
143.46.169.0/24	Headquarters, USAISC	256
143.46.170.0/24	Headquarters, USAISC	256
143.46.190.0/24	Headquarters, USAISC	256
143.46.193.0/24	Headquarters, USAISC	256
143.46.196.0/24	Headquarters, USAISC	256
143.46.210.0/24	Headquarters, USAISC	256
143.46.229.0/24	Headquarters, USAISC	256
143.46.240.0/24	Headquarters, USAISC	256
143.46.253.0/24	Headquarters, USAISC	256
147.248.24.0/24	Headquarters, USAISC	256
155.5.17.0/24	Headquarters, USAISC	256
155.5.18.0/24	Headquarters, USAISC	256
155.5.20.0/24	Headquarters, USAISC	256
155.5.21.0/24	Headquarters, USAISC	256
155.5.32.0/24	Headquarters, USAISC	256
155.5.33.0/24	Headquarters, USAISC	256
155.5.35.0/24	Headquarters, USAISC	256
155.5.48.0/24	Headquarters, USAISC	256
155.5.49.0/24	Headquarters, USAISC	256
155.5.106.0/24	Headquarters, USAISC	256
155.5.116.0/24	Headquarters, USAISC	256
155.6.20.0/24	Headquarters, USAISC	256
155.6.21.0/24	Headquarters, USAISC	256
155.6.22.0/24	Headquarters, USAISC	256
155.6.23.0/24	Headquarters, USAISC	256
155.6.24.0/24	Headquarters, USAISC	256
155.6.25.0/24	Headquarters, USAISC	256
155.6.26.0/24	Headquarters, USAISC	256
155.6.27.0/24	Headquarters, USAISC	256
155.6.28.0/24	Headquarters, USAISC	256
155.6.29.0/24	Headquarters, USAISC	256
155.6.30.0/24	Headquarters, USAISC	256
155.6.31.0/24	Headquarters, USAISC	256
155.6.32.0/24	Headquarters, USAISC	256
155.6.33.0/24	Headquarters, USAISC	256
155.6.35.0/24	Headquarters, USAISC	256
155.6.37.0/24	Headquarters, USAISC	256
155.6.39.0/24	Headquarters, USAISC	256
155.6.40.0/24	Headquarters, USAISC	256
155.6.41.0/24	Headquarters, USAISC	256
155.6.42.0/24	Headquarters, USAISC	256
155.6.48.0/24	Headquarters, USAISC	256
155.6.51.0/24	Headquarters, USAISC	256
155.6.53.0/24	Headquarters, USAISC	256
155.6.56.0/24	Headquarters, USAISC	256
155.6.57.0/24	Headquarters, USAISC	256
155.6.58.0/24	Headquarters, USAISC	256
155.6.90.0/24	Headquarters, USAISC	256
155.6.98.0/24	Headquarters, USAISC	256
155.6.100.0/24	Headquarters, USAISC	256
155.6.194.0/24	Headquarters, USAISC	256
155.6.200.0/24	Headquarters, USAISC	256
155.6.210.0/24	Headquarters, USAISC	256
155.6.216.0/24	Headquarters, USAISC	256
155.6.217.0/24	Headquarters, USAISC	256
155.6.218.0/24	Headquarters, USAISC	256
155.6.219.0/24	Headquarters, USAISC	256
155.6.220.0/24	Headquarters, USAISC	256
155.6.240.0/24	Headquarters, USAISC	256
155.6.243.0/24	Headquarters, USAISC	256
155.20.105.0/24	Headquarters, USAISC	256
155.20.109.0/24	Headquarters, USAISC	256

Netblock	Company
2608:c141:30::/48	United States Department of Defense (DoD)

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WHOIS Details

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                                                ASHandle:       AS1637
                                                OrgID:          AS1637
                                                ASName:         AS1637
                                                ASNumber:       AS1637
                                                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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Hosted Domains API & Database

Peers

There is 1 peer for this ASN.

Peers	Name
AS27066	United States Department of Defense (DoD)

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ASN API & Database

Upstreams

There is 1 peer for this ASN.

upstreams	Name
AS27066	United States Department of Defense (DoD)

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ASN API & Database

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
52.96.19.85	AS8075 Microsoft Corporation	`0.73ms` from Ashburn, US
35.195.37.85	AS396982 Google LLC	`0.15ms` from Brussels, BE
91.199.52.5	AS209052 NN Biztosito Zrt	`0.98ms` from Budapest, HU
68.117.207.245	AS20115 Charter Communications LLC	`14.12ms` from Dallas, US
4.1.28.69	AS3356 Level 3 Parent, LLC	`0.37ms` from Denver, US
18.153.213.213	AS16509 Amazon.com, Inc.	`0.14ms` from Frankfurt am Main, DE
81.153.117.181	AS2856 British Telecommunications PLC	`3.68ms` from London, GB
147.156.28.101	AS766 RedIRIS Autonomous System	`5.72ms` from Madrid, ES
79.54.127.117	AS3269 Telecom Italia S.p.A.	`2.11ms` from Milan, IT
69.70.219.149	AS5769 Videotron Ltee	`2.59ms` from Montreal, CA
102.208.133.69	AS328697 Smart Network Limited	`15.28ms` from Nairobi, KE
160.153.78.101	AS26496 GoDaddy.com, LLC	`1.03ms` from Phoenix, US
62.168.16.101	AS13036 T-Mobile Czech Republic a.s.	`0.60ms` from Prague, CZ
183.232.104.133	AS56040 China Mobile communications corporation	`3.93ms` from Shenzhen, CN
112.31.7.37	AS9808 China Mobile Communications Group Co., Ltd.	`10.28ms` from Suzhou, CN
103.254.165.5	AS7545 TPG Telecom Limited	`0.76ms` from Sydney, AU
1.162.107.197	AS3462 Data Communication Business Group	`1.28ms` from Taipei, TW
60.116.181.165	AS17676 SoftBank Corp.	`2.94ms` from Tokyo, JP
52.179.21.85	AS8075 Microsoft Corporation	`0.42ms` from Ashburn, US
14.202.48.53	AS7545 TPG Telecom Limited	`0.69ms` from Brisbane, AU
141.219.7.5	AS62618 Michigan Technological University	`11.97ms` from Chicago, US
35.234.92.101	AS396982 Google LLC	`0.09ms` from Frankfurt am Main, DE
14.183.224.181	AS45899 VNPT Corp	`3.47ms` from Ho Chi Minh City, VN
199.19.158.21	AS36363 Viridio	`2.55ms` from Los Angeles, US
90.60.195.117	AS3215 Orange S.A.	`10.93ms` from Marseille, FR

Traceroute

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

traceroute -a -n -q1 -f3 -m7 143.46.148.239

traceroute to 143.46.148.239 (143.46.148.239): 7 hops max, 52 byte packets

3 [AS3356] 4.69.219.226 233.675 ms

4 [AS3356] 8.244.134.50 229.865 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Budapest, HU

On November 14th 2025

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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 AS1637 at robtex.

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