Autonomous System details

AS1637

Headquarters, USAISC · mail.mil

United States

Stub AS

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AS1637 – Headquarters, USAISC

Field	Value
Country	United States
Website	mail.mil
Hosted domains	0
IPv4 addresses	200,960
IPv6 addresses	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
155.20.107.0/24	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	United States Department of Defense (DoD)

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Upstreams

There is 1 peer for this ASN.

upstreams	Name
AS27066	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
108.90.94.5	AS7018 AT&T Enterprises, LLC	`7.44ms` from Atlanta, US
34.61.150.197	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
3.66.96.37	AS16509 Amazon.com, Inc.	`0.17ms` from Frankfurt am Main, DE
106.53.169.69	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.26ms` from Guangzhou, CN
58.220.98.101	AS4134 CHINANET-BACKBONE	`5.06ms` from Huai'an, CN
154.118.66.229	AS37340 SPECTRANET LIMITED	`13.28ms` from Lagos, NG
27.4.213.133	AS17488 Hathway IP Over Cable Internet	`12.75ms` from Mumbai, IN
45.250.11.101	AS54103 MOD Mission Critical, LLC	`0.12ms` from New York City, US
126.4.196.101	AS17676 SoftBank Corp.	`1.96ms` from Osaka, JP
124.99.151.133	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.31ms` from Osaka, JP
124.50.39.69	AS17858 LG POWERCOMM	`1.87ms` from Seoul, KR
36.227.215.149	AS3462 Data Communication Business Group	`1.14ms` from Taipei, TW
172.99.243.213	AS6079 RCN	`2.68ms` from Ashburn, US
94.66.31.21	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`1.69ms` from Athens, GR
105.156.196.165	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`4.04ms` from Casablanca, MA
207.152.103.85	AS12119 ITV-3	`10.67ms` from Chicago, US
97.134.155.181	AS6167 Verizon Business	`10.46ms` from Dallas, US
12.91.122.37	AS7018 AT&T Enterprises, LLC	`4.70ms` from Durham, US
73.76.55.53	AS7922 Comcast Cable Communications, LLC	`8.76ms` from Houston, US
58.127.0.37	AS9318 SK Broadband Co Ltd	`2.02ms` from Incheon, KR
194.152.1.5	AS3212 Telemach Slovenija d.o.o.	`2.15ms` from Ljubljana, SI
95.123.20.69	AS3352 TELEFONICA DE ESPANA S.A.U.	`5.44ms` from Madrid, ES
73.53.240.21	AS7922 Comcast Cable Communications, LLC	`6.76ms` from Orlando, US
98.51.164.149	AS7922 Comcast Cable Communications, LLC	`6.12ms` from San Jose, US
222.236.51.133	AS9318 SK Broadband Co Ltd	`5.76ms` from Seoul, KR

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 155.5.134.203

traceroute to 155.5.134.203 (155.5.134.203): 7 hops max, 52 byte packets

3 [AS3356] 4.69.219.226 229.282 ms

4 [AS3356] 8.244.134.50 229.828 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Budapest, HU

On January 18th 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 AS1637 at robtex.

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