AS3477 National Oceanic and Atmospheric Administration
A network in United States. Here are the size of its IP ranges and the data used for visitor checks.
United StatesVisitor check data
- Network type
- Regular network
- Known VPN servers
- None
- Tor exit nodes
- None
This network mainly serves home, office and mobile lines. VPN servers are counted only when they are on the public list. How checks work
Largest IPv4 ranges
Up to 20, largest first (39 in total).
140.90.0.0/16
140.172.0.0/16
155.206.0.0/16
161.55.0.0/16
137.75.64.0 ~ 137.75.121.255
205.156.0.0 ~ 205.156.55.255
198.206.32.0/19
204.228.175.0 ~ 204.228.191.255
140.208.192.0/20
204.193.241.0 ~ 204.193.247.255
137.75.224.0/22
140.208.252.0/22
165.92.186.0 ~ 165.92.188.255
192.58.1.0 ~ 192.58.3.255
199.242.231.0 ~ 199.242.233.255
205.156.61.0 ~ 205.156.63.255
151.207.8.0/23
151.207.12.0/23
192.35.128.0/23
199.104.104.0/23
Data: DB-IP (CC BY 4.0), public VPN server list, Tor Project exit list · as of 2026-10-12