143.138.0.0/16

AS1637Headquarters, USAISC

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Summary

IP address summary information
Country	United States
Domain	host.io/mail.mil·mail.mil
ASN	AS1637 — Headquarters, USAISC Also announced by AS5277 — United States Department of Defense (DoD)
Registry	ARIN
ID	KOREA1

WHOIS


  ASHandle:       █████
  OrgID:          █████
  ASName:         ██████
  ASNumber:       AS█████
  RegDate:        ████-██-██
  Updated:        ████-██-██
  TechHandle:     ████-████
  Source:         ████

Overlapping Ranges

No overlapping ranges found.

Overlapping Ranges

Nearby Ranges

BGP prefixes that overlap with 143.0.0.0/8

Range	ASN	Company	Num of IPs
143.77.0.0/16	AS5277	Headquarters, USAISC	65,536
143.69.0.0/16	AS5972	Headquarters, USAISC	65,536
143.60.0.0/16	AS40723	The University of Virginia's College at Wise	65,536
143.104.0.0/16	AS395139	NewYork-Presbyterian Hospital	65,536
143.83.0.0/16	AS5972	Headquarters, USAISC	65,536
143.233.0.0/16	AS2546	Greek Academic & Research Computer Network	65,536
143.229.0.0/16	AS36427	Vassar College	65,536
143.166.0.0/16	AS3614	Dell, Inc.	65,536
143.90.0.0/16	AS4725	SoftBank Corp.	65,536
143.168.0.0/16	AS16509	Amazon.com, Inc.	65,536

Nearby Ranges

Hosted Domains

There are 0 domain names hosted across 0 IP addresses on this range.

No domains found.

Pingable IPs

0 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more

Other Pingable IPs

IP Address	ASN	Details
120.56.156.0 Ping	AS9829National Internet Backbone	8.68ms from Chennai, IN
124.112.4.32 Ping	AS4134CHINANET BACKBONE	6.57ms from Huainan, CN
146.115.217.144 Ping	AS6079RCN	10.00ms from New York City, US
125.2.167.48 Ping	AS9354Community Network Center Inc.	5.53ms from Osaka, JP
71.34.98.224 Ping	AS209CenturyLink Communications, LLC	1.25ms from Portland, US
54.234.198.96 Ping	AS14618Amazon.com, Inc.	0.43ms from Reston, US
223.33.93.208 Ping	AS9644SK Telecom	8.42ms from Seoul, KR
171.116.194.96 Ping	AS4837CHINA UNICOM China169 Backbone	2.57ms from Taiyuan, CN
181.120.177.144 Ping	AS23201Telecel S.A.	7.73ms from Asuncion, PY
217.84.136.160 Ping	AS3320Deutsche Telekom AG	7.71ms from Frankfurt am Main, DE

Pingable IPs

Important routers in AS1637 / 143.138.0.0/16

Traceroute

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

$ traceroute -a -n -q1 -f6 -m15 143.138.23.81

traceroute to 143.138.23.81 (143.138.23.81): 15 hops max, 52 byte packets

6 [AS4637] 210.176.131.56 5.452 ms

7 [AS4637] 202.47.212.153 24.009 ms

8 [AS4637] 202.47.212.142 76.196 ms

9 [AS4637] 202.84.207.182 76.767 ms

10 [AS4637] 210.57.53.61 78.31 ms

11 [AS3356] 4.69.219.226 143.563 ms

12 [AS3356] 8.244.134.50 144.276 ms

13 *

14 *

15 *

Measurement taken from

IPinfo ProbeNet in Delhi, IN

On August 7, 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.

143.138.0.0/16

Summary

WHOIS

Overlapping Ranges

Overlapping Ranges

Nearby Ranges

Nearby Ranges

Hosted Domains

Pingable IPs

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Pingable IPs

Important routers in AS1637 / 143.138.0.0/16

Traceroute

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