AS1637 Headquarters, USAISC details

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AS1637 – Headquarters, USAISC

Field	Value
Country	United States
Website	mail.mil
Hosted domains	0
Number of IPv4	200,448
Number of IPv6	1,208,925,819,614,629,174,706,176
ASN type	Government
Registry	arin
Allocated	21 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
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
6.134.24.0/22	Headquarters, USAISC	1,024
143.46.128.0/23	Headquarters, USAISC	512
143.46.130.0/23	Headquarters, USAISC	512
143.46.134.0/23	Headquarters, USAISC	512
143.46.8.0/23	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
143.46.10.0/24	Headquarters, USAISC	256
143.46.110.0/24	Headquarters, USAISC	256
143.46.11.0/24	Headquarters, USAISC	256
143.46.12.0/24	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
143.46.17.0/24	Headquarters, USAISC	256
143.46.18.0/24	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
143.46.20.0/24	Headquarters, USAISC	256
143.46.210.0/24	Headquarters, USAISC	256
143.46.21.0/24	Headquarters, USAISC	256
143.46.22.0/24	Headquarters, USAISC	256
143.46.224.0/24	Headquarters, USAISC	256
143.46.229.0/24	Headquarters, USAISC	256
143.46.23.0/24	Headquarters, USAISC	256
143.46.240.0/24	Headquarters, USAISC	256
143.46.24.0/24	Headquarters, USAISC	256
143.46.245.0/24	Headquarters, USAISC	256
143.46.25.0/24	Headquarters, USAISC	256
143.46.253.0/24	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
143.46.5.0/24	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
147.248.24.0/24	Headquarters, USAISC	256
155.5.106.0/24	Headquarters, USAISC	256
155.5.116.0/24	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
155.6.100.0/24	Headquarters, USAISC	256
155.6.194.0/24	Headquarters, USAISC	256
155.6.200.0/24	Headquarters, USAISC	256
155.6.20.0/24	Headquarters, USAISC	256
155.6.210.0/24	Headquarters, USAISC	256
155.6.21.0/24	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
155.6.22.0/24	Headquarters, USAISC	256
155.6.23.0/24	Headquarters, USAISC	256
155.6.240.0/24	Headquarters, USAISC	256
155.6.24.0/24	Headquarters, USAISC	256
155.6.243.0/24	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
6.16.88.0/24	Headquarters, USAISC	256
6.16.89.0/24	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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Peers

There is 1 peer for this ASN.

Peers	Name
AS27066	DoD Network Information Center

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ASN API

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Upstreams

There is 1 peer for this ASN.

upstreams	Name
AS27066	DoD Network Information Center

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ASN API

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Downstreams

There are no downstreams for this ASN.

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ASN API

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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
81.89.56.101	AS29405 VNET a.s.	`0.35ms` from Bratislava, SK
73.34.104.21	AS7922 Comcast Cable Communications, LLC	`3.89ms` from Denver, US
20.208.218.21	AS8075 Microsoft Corporation	`0.64ms` from Geneve, CH
113.104.158.37	AS4134 CHINANET-BACKBONE	`3.43ms` from Guangzhou, CN
83.55.71.53	AS3352 TELEFONICA DE ESPANA S.A.U.	`6.84ms` from Madrid, ES
167.58.138.149	AS6057 Administracion Nacional de Telecomunicaciones	`1.75ms` from Montevideo, UY
177.36.59.5	AS262909 JK TELECOMUNICACOES LTDA	`15.63ms` from Osasco, BR
51.174.1.101	AS29695 Altibox AS	`9.16ms` from Oslo, NO
20.163.58.101	AS8075 Microsoft Corporation	`0.47ms` from Phoenix, US
180.169.145.53	AS4812 China Telecom (Group)	`3.88ms` from Shanghai, CN
52.186.26.53	AS8075 Microsoft Corporation	`0.43ms` from Ashburn, US
79.233.45.165	AS3320 Deutsche Telekom AG	`1.84ms` from Berlin, DE
84.0.138.165	AS5483 Magyar Telekom Plc.	`7.25ms` from Budapest, HU
47.227.218.5	AS33363 Charter Communications, Inc	`9.26ms` from Chicago, US
50.173.168.101	AS7922 Comcast Cable Communications, LLC	`6.34ms` from Chicago, US
4.223.227.133	AS8075 Microsoft Corporation	`0.14ms` from Gaevle, SE
109.168.254.21	AS12389 PJSC Rostelecom	`5.95ms` from Krasnodar, RU
4.240.55.53	AS8075 Microsoft Corporation	`0.14ms` from Lohogaon, IN
75.58.231.213	AS7018 AT&T Enterprises, LLC	`19.75ms` from Los Angeles, US
90.85.45.117	AS3215 Orange S.A.	`2.36ms` from Marseille, FR
201.232.104.245	AS13489 UNE EPM TELECOMUNICACIONES S.A.	`2.02ms` from Medellin, CO
35.138.98.21	AS33363 Charter Communications, Inc	`10.49ms` from Miami, US
195.120.157.5	AS3269 Telecom Italia S.p.A.	`8.15ms` from Milan, IT
18.230.72.37	AS16509 Amazon.com, Inc.	`0.14ms` from Osasco, BR
31.45.73.133	AS2119 Telenor Norge AS	`10.10ms` from Oslo, NO

Traceroute

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

traceroute -a -n -q1 -f3 -m8 155.6.221.153

traceroute to 155.6.221.153 (155.6.221.153): 8 hops max, 52 byte packets

3 [AS3356] 4.1.40.153 5.034 ms

4 [AS3356] 4.69.219.222 99.444 ms

5 [AS3356] 8.244.134.50 101.446 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Bend, US

On August 17th 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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