ARIN registry — WHOIS, browse & statistics
A daily mirror of ARIN's public delegated registry (North America). Look up a resource, browse every object, or find a company's resources by name.
Single-resource lookup in ARIN’s delegated registry, enriched live from ARIN RDAP.
// what ARIN has delegated
ARIN registry at a glance
🌐
Assigned IPv4 addresses
1.65B
1,645,628,928
📦
IPv4 networks
76,687
delegated blocks
🧭
IPv6 networks
11,336
delegated blocks
🔗
Autonomous systems
34,032
ASNs
// browse the objects
Browse the ARIN registry
| Range | Addresses | Country | Status | Allocated | Org handle |
|---|---|---|---|---|---|
| 40.27.0.0 – 40.27.255.255 | 65,536 |  US |
allocated | 1991-04-23 | 48a4bce0e04c… |
| 40.28.0.0 – 40.31.255.255 | 262,144 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.36.0.0 – 40.37.255.255 | 131,072 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.40.0.0 – 40.43.255.255 | 262,144 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.44.0.0 – 40.44.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.46.0.0 – 40.46.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.49.0.0 – 40.49.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.50.0.0 – 40.51.255.255 | 131,072 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.52.0.0 – 40.55.255.255 | 262,144 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.56.0.0 – 40.56.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.57.0.0 – 40.57.255.255 | 65,536 | US |
allocated | 1991-04-23 | 48a4bce0e04c… |
| 40.58.0.0 – 40.59.255.255 | 131,072 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.60.0.0 – 40.63.255.255 | 262,144 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.144.0.0 – 40.145.255.255 | 131,072 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.147.0.0 – 40.147.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.149.0.0 – 40.149.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.151.0.0 – 40.151.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.152.0.0 – 40.153.255.255 | 131,072 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.154.0.0 – 40.154.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.156.0.0 – 40.157.255.255 | 131,072 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.158.0.0 – 40.158.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.183.0.0 – 40.183.255.255 | 65,536 | US |
allocated | 1991-04-23 | 48a4bce0e04c… |
| 40.184.0.0 – 40.185.255.255 | 131,072 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.189.0.0 – 40.189.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.190.0.0 – 40.191.255.255 | 131,072 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.196.0.0 – 40.199.255.255 | 262,144 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.200.0.0 – 40.200.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.202.0.0 – 40.202.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.204.0.0 – 40.207.255.255 | 262,144 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.209.0.0 – 40.209.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.211.0.0 – 40.211.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.213.0.0 – 40.213.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.215.0.0 – 40.215.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.223.0.0 – 40.223.255.255 | 65,536 | US |
allocated | 1991-04-23 | 48a4bce0e04c… |
| 40.225.0.0 – 40.225.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.226.0.0 – 40.226.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.228.0.0 – 40.228.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.231.0.0 – 40.231.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.232.0.0 – 40.232.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.233.128.0 – 40.233.255.255 | 32,768 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.236.0.0 – 40.237.255.255 | 131,072 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.240.0.0 – 40.240.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.243.0.0 – 40.243.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.244.0.0 – 40.247.255.255 | 262,144 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.248.0.0 – 40.248.255.255 | 65,536 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.250.0.0 – 40.251.255.255 | 131,072 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 40.254.0.0 – 40.255.255.255 | 131,072 | US |
allocated | 1991-04-23 | ec8e1bc9e1dc… |
| 147.20.0.0 – 147.20.255.255 | 65,536 | US |
allocated | 1991-04-22 | e1ed1885c9ce… |
| 147.21.0.0 – 147.21.255.255 | 65,536 | US |
allocated | 1991-04-22 | 87ca31136438… |
| 147.22.0.0 – 147.22.255.255 | 65,536 | US |
allocated | 1991-04-22 | 87ca31136438… |
| 147.23.0.0 – 147.23.255.255 | 65,536 | US |
allocated | 1991-04-22 | ffd67fadfdd4… |
| 147.24.0.0 – 147.25.255.255 | 131,072 | US |
allocated | 1991-04-22 | ffd67fadfdd4… |
| 192.100.147.0 – 192.100.147.255 | 256 | US |
allocated | 1991-04-22 | 45fe880b68a8… |
| 192.100.148.0 – 192.100.151.255 | 1,024 | US |
allocated | 1991-04-22 | 45fe880b68a8… |
| 192.100.152.0 – 192.100.152.255 | 256 | US |
allocated | 1991-04-22 | 45fe880b68a8… |
| 192.100.153.0 – 192.100.153.255 | 256 | US |
allocated | 1991-04-22 | eee4911c1d68… |
| 148.144.0.0 – 148.144.255.255 | 65,536 | US |
allocated | 1991-04-18 | d40f6943e069… |
| 148.146.0.0 – 148.146.255.255 | 65,536 | US |
allocated | 1991-04-18 | 2e35e4df6e48… |
| 148.147.0.0 – 148.147.255.255 | 65,536 | US |
allocated | 1991-04-18 | 3a958a082b0e… |
| 192.104.42.0 – 192.104.42.255 | 256 | US |
allocated | 1991-04-18 | 1d6df64affdb… |
| 192.104.46.0 – 192.104.46.255 | 256 | US |
allocated | 1991-04-18 | 6154750e26cb… |
| 192.104.47.0 – 192.104.47.255 | 256 | US |
allocated | 1991-04-18 | 6154750e26cb… |
| 147.16.0.0 – 147.19.255.255 | 262,144 | US |
allocated | 1991-04-17 | ffd67fadfdd4… |
| 147.155.0.0 – 147.155.255.255 | 65,536 | US |
allocated | 1991-04-17 | b6c3ac5024b6… |
| 149.138.0.0 – 149.138.255.255 | 65,536 | US |
allocated | 1991-04-17 | 522d91a6ebdc… |
| 192.80.70.0 – 192.80.70.255 | 256 | US |
allocated | 1991-04-17 | 0c3e47aef93a… |
| 192.100.145.0 – 192.100.145.255 | 256 | US |
allocated | 1991-04-17 | 05906b2ce977… |
| 192.100.146.0 – 192.100.146.255 | 256 | US |
allocated | 1991-04-17 | 6154750e26cb… |
| 192.101.25.0 – 192.101.25.255 | 256 | US |
allocated | 1991-04-17 | e8600c9fabd6… |
| 38.0.0.0 – 38.255.255.255 | 16,777,216 | US |
allocated | 1991-04-16 | 37fe01d6d027… |
| 147.153.0.0 – 147.153.255.255 | 65,536 | US |
allocated | 1991-04-16 | fc738d317a65… |
| 148.142.0.0 – 148.142.255.255 | 65,536 | US |
allocated | 1991-04-16 | b777924a2636… |
| 149.131.0.0 – 149.131.127.255 | 32,768 | US |
allocated | 1991-04-16 | 31caea8da158… |
| 149.131.128.0 – 149.131.143.255 | 4,096 | US |
allocated | 1991-04-16 | 31caea8da158… |
| 149.131.144.0 – 149.131.151.255 | 2,048 | US |
allocated | 1991-04-16 | 31caea8da158… |
| 149.131.152.0 – 149.131.159.255 | 2,048 | US |
allocated | 1991-04-16 | 01ded2cfbf92… |
| 149.131.160.0 – 149.131.191.255 | 8,192 | US |
allocated | 1991-04-16 | 01ded2cfbf92… |
| 149.131.192.0 – 149.131.255.255 | 16,384 | US |
allocated | 1991-04-16 | 01ded2cfbf92… |
| 192.80.69.0 – 192.80.69.255 | 256 | US |
allocated | 1991-04-16 | 2542054c65d0… |
| 192.101.17.0 – 192.101.17.255 | 256 | US |
allocated | 1991-04-16 | d2e713a94519… |
| 192.101.18.0 – 192.101.18.255 | 256 | US |
allocated | 1991-04-16 | 8c78747c6d11… |
| 192.101.19.0 – 192.101.19.255 | 256 | US |
allocated | 1991-04-16 | 8c78747c6d11… |
| 192.101.20.0 – 192.101.20.255 | 256 | US |
allocated | 1991-04-16 | 8c78747c6d11… |
| 192.101.21.0 – 192.101.21.255 | 256 | US |
allocated | 1991-04-16 | 3926e0967b7c… |
| 192.101.22.0 – 192.101.23.255 | 512 | US |
allocated | 1991-04-16 | 3926e0967b7c… |
| 192.101.24.0 – 192.101.24.255 | 256 | US |
allocated | 1991-04-16 | 3926e0967b7c… |
| 192.102.236.0 – 192.102.236.255 | 256 | US |
allocated | 1991-04-16 | 7fd3f557a35c… |
| 192.102.237.0 – 192.102.237.255 | 256 | US |
allocated | 1991-04-16 | 9db913382dab… |
| 192.102.238.0 – 192.102.238.255 | 256 | US |
allocated | 1991-04-16 | 250a2ca07101… |
| 147.144.0.0 – 147.144.255.255 | 65,536 | US |
allocated | 1991-04-15 | 3a69c44411d5… |
| 147.146.0.0 – 147.146.255.255 | 65,536 | US |
allocated | 1991-04-15 | c8b94d9b0fc4… |
| 148.180.0.0 – 148.180.255.255 | 65,536 | US |
allocated | 1991-04-15 | 6a1b3f34471d… |
| 192.100.141.0 – 192.100.141.255 | 256 | US |
allocated | 1991-04-15 | 56dee0c4493a… |
| 192.100.142.0 – 192.100.142.255 | 256 | US |
allocated | 1991-04-15 | b1fe4c145002… |
| 192.103.1.0 – 192.103.1.255 | 256 | US |
allocated | 1991-04-15 | 0bdb767ab58d… |
| 192.104.39.0 – 192.104.39.255 | 256 | US |
allocated | 1991-04-15 | 25905934faeb… |
| 148.89.0.0 – 148.89.255.255 | 65,536 | US |
allocated | 1991-04-12 | bb9acc6af6d9… |
| 148.90.0.0 – 148.90.255.255 | 65,536 | US |
allocated | 1991-04-12 | 850951f58947… |
| 148.93.0.0 – 148.93.255.255 | 65,536 | US |
allocated | 1991-04-12 | 850951f58947… |
| 148.95.0.0 – 148.95.255.255 | 65,536 | US |
allocated | 1991-04-12 | 850951f58947… |