AS1906 — NORTHROP-GRUMMAN

AS1906 announces 50 IPv4 prefixes covering 833,792 addresses and 0 IPv6 prefixes.

About this network

A corporate network of Northrop Grumman (NORTHROP-GRUMMAN), the American aerospace and defense technology company.

What it's used for

• Enterprise and engineering networking across Northrop Grumman's US operations.

Notable

• A large private enterprise network (a defense contractor), not a commercial ISP or hosting provider. It announces a substantial block of legacy IPv4 address space.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 129.4.0.0/16
• 130.124.0.0/16
• 132.228.0.0/16
• 134.223.0.0/16
• 137.51.0.0/17
• 137.51.128.0/18
• 137.51.192.0/19
• 137.51.224.0/20
• 137.51.240.0/22
• 137.51.244.0/23
• 137.51.248.0/21
• 153.113.0.0/16
• 155.104.0.0/16
• 157.127.0.0/16
• 158.114.0.0/16
• 159.4.0.0/16
• 159.201.0.0/16
• 167.225.0.0/17
• 192.31.248.0/24
• 192.35.84.0/24
• 192.45.0.0/16
• 192.83.248.0/24
• 192.86.67.0/24
• 192.86.68.0/22
• 192.86.72.0/22
• 192.86.76.0/24
• 192.107.246.0/24
• 192.112.60.0/24
• 192.112.143.0/24
• 192.112.144.0/24
• 192.112.146.0/23
• 192.135.211.0/24
• 192.135.212.0/24
• 192.150.201.0/24
• 198.17.147.0/24
• 198.49.249.0/24
• 198.180.218.0/24
• 198.202.184.0/24
• 199.26.33.0/24
• 199.26.34.0/23
• 199.26.36.0/22
• 199.26.50.0/24
• 199.36.17.0/24
• 199.165.146.0/23
• 199.165.148.0/24
• 204.118.7.0/24
• 208.1.160.0/20
• 208.12.120.0/23
• 208.12.122.0/24
• 208.20.220.0/24

Upstream networks

• AS7018 AT&T Enterprises, LLC

Adjacent networks

• AS7018 AT&T Enterprises, LLC