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AS243 L3Harris Technologies, Inc.

HARRIS-ATD-AS - L3Harris Technologies, Inc. · registered in the United States

IPv4 addresses749,824185 prefixes · 0.024% of announced IPv4
Rank in United States#127largest network in US by IPv4 space, of 18,338 · 0.06% of US
Rank worldwide#445of 79,396 networks with IPv4
IPv6noneno IPv6 routes announced
CountryUnited States18,679 ASNs registered there
Open AS243 in ASN lookup Look up an IP in this network (128.170.0.1) All networks in United States

IPv4 prefixes

All 185 prefixes, in address order.

  • 128.170.0.0/16
  • 137.237.0.0/20
  • 137.237.16.0/21
  • 137.237.24.0/23
  • 137.237.26.0/24
  • 137.237.27.0/24
  • 137.237.28.0/22
  • 137.237.32.0/19
  • 137.237.64.0/18
  • 137.237.128.0/18
  • 137.237.192.0/21
  • 137.237.200.0/24
  • 137.237.201.0/24
  • 137.237.202.0/23
  • 137.237.204.0/22
  • 137.237.208.0/20
  • 137.237.224.0/19
  • 138.254.0.0/16
  • 141.199.0.0/16
  • 142.65.0.0/18
  • 142.65.64.0/19
  • 142.65.96.0/21
  • 142.65.104.0/23
  • 142.65.106.0/23
  • 142.65.108.0/22
  • 142.65.112.0/22
  • 142.65.116.0/23
  • 142.65.118.0/23
  • 142.65.120.0/21
  • 142.65.128.0/22
  • 142.65.132.0/22
  • 142.65.136.0/22
  • 142.65.140.0/22
  • 142.65.144.0/21
  • 142.65.152.0/21
  • 142.65.160.0/22
  • 142.65.164.0/22
  • 142.65.168.0/21
  • 142.65.176.0/22
  • 142.65.180.0/22
  • 142.65.184.0/21
  • 142.65.192.0/21
  • 142.65.200.0/22
  • 142.65.204.0/24
  • 142.65.205.0/24
  • 142.65.206.0/23
  • 142.65.208.0/20
  • 142.65.224.0/19
  • 147.177.0.0/17
  • 147.177.128.0/18
  • 147.177.192.0/19
  • 147.177.224.0/21
  • 147.177.232.0/22
  • 147.177.236.0/23
  • 147.177.238.0/24
  • 147.177.239.0/24
  • 147.177.240.0/20
  • 148.104.0.0/22
  • 148.104.4.0/23
  • 148.104.6.0/23
  • 148.104.8.0/21
  • 148.104.16.0/20
  • 148.104.32.0/19
  • 148.104.64.0/19
  • 148.104.96.0/20
  • 148.104.112.0/20
  • 148.104.128.0/17
  • 151.190.0.0/20
  • 151.190.16.0/22
  • 151.190.20.0/24
  • 151.190.21.0/24
  • 151.190.22.0/23
  • 151.190.24.0/21
  • 151.190.32.0/19
  • 151.190.64.0/18
  • 151.190.128.0/18
  • 151.190.192.0/20
  • 151.190.209.0/24
  • 151.190.210.0/23
  • 151.190.212.0/22
  • 151.190.216.0/22
  • 151.190.220.0/24
  • 151.190.227.0/24
  • 151.190.230.0/24
  • 151.190.233.0/24
  • 151.190.234.0/23
  • 151.190.240.0/20
  • 158.147.0.0/19
  • 158.147.32.0/21
  • 158.147.40.0/22
  • 158.147.44.0/24
  • 158.147.45.0/24
  • 158.147.46.0/23
  • 158.147.48.0/20
  • 158.147.64.0/18
  • 158.147.128.0/18
  • 158.147.192.0/20
  • 158.147.208.0/22
  • 158.147.212.0/23
  • 158.147.214.0/24
  • 158.147.215.0/24
  • 158.147.216.0/21
  • 158.147.224.0/19
  • 159.62.0.0/20
  • 159.62.16.0/21
  • 159.62.24.0/23
  • 159.62.26.0/24
  • 159.62.27.0/24
  • 159.62.28.0/22
  • 159.62.32.0/22
  • 159.62.36.0/23
  • 159.62.38.0/23
  • 159.62.40.0/21
  • 159.62.48.0/23
  • 159.62.50.0/23
  • 159.62.52.0/22
  • 159.62.56.0/21
  • 159.62.64.0/18
  • 159.62.128.0/17
  • 166.20.0.0/16
  • 192.5.114.0/23
  • 192.5.134.0/24
  • 192.5.163.0/24
  • 192.5.213.0/24
  • 192.31.4.0/24
  • 192.31.74.0/24
  • 192.41.209.0/24
  • 192.43.225.0/24
  • 192.52.224.0/23
  • 192.52.233.0/24
  • 192.52.234.0/23
  • 192.52.236.0/24
  • 192.55.210.0/23
  • 192.68.26.0/23
  • 192.107.152.0/21
  • 192.107.160.0/22
  • 192.124.1.0/24
  • 192.124.2.0/23
  • 192.124.4.0/22
  • 192.124.8.0/24
  • 192.129.85.0/24
  • 192.138.203.0/24
  • 192.149.28.0/24
  • 192.153.172.0/24
  • 192.158.4.0/22
  • 192.158.8.0/22
  • 192.160.108.0/24
  • 192.160.112.0/22
  • 192.160.116.0/23
  • 192.160.118.0/24
  • 192.160.119.0/24
  • 192.160.120.0/24
  • 192.160.166.0/24
  • 192.161.1.0/24
  • 192.161.2.0/23
  • 192.161.4.0/24
  • 192.190.26.0/23
  • 192.190.28.0/23
  • 192.190.121.0/24
  • 192.190.122.0/23
  • 192.190.124.0/22
  • 192.245.66.0/23
  • 192.245.68.0/22
  • 192.245.72.0/24
  • 198.22.26.0/24
  • 198.99.108.0/24
  • 198.102.67.0/24
  • 198.105.16.0/21
  • 198.105.24.0/23
  • 198.182.199.0/24
  • 198.190.166.0/24
  • 198.232.129.0/24
  • 198.246.254.0/24
  • 199.4.130.0/23
  • 199.190.191.0/24
  • 199.201.193.0/24
  • 199.248.236.0/24
  • 199.254.8.0/21
  • 204.27.219.0/24
  • 204.107.209.0/24
  • 204.152.78.0/23
  • 204.187.60.0/23
  • 205.142.172.0/22
  • 205.167.252.0/23
  • 205.210.38.0/23

Similar-sized networks in United States

ASNNameIPv4 addresses
AS231#124 MISU-231 - Michigan State University783,360
AS11232#125 MIDCO-NET - Midcontinent Communications779,776
AS8103#126 STATE-OF-FLA - Florida Department of Management Services - Division of Telecommunications772,352
AS2572#128 MORENET - University of Missouri - dba the Missouri Research and Education Network (MOREnet)743,552
AS11686#129 ZAYO-ENA-11686 - Zayo Bandwidth734,720
AS2687#130 ATGS-MMD-AS - AT&T Enterprises, LLC727,040

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources