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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
1,645,875,712
📦
IPv4 networks
76,665
delegated blocks
🧭
IPv6 networks
11,326
delegated blocks
🔗
Autonomous systems
34,014
ASNs
// browse the objects

Browse the ARIN registry

IPv4 blocks IPv6 blocks ASNs
RangeAddressesCountryStatusAllocatedOrg handle
204.29.251.0 – 204.29.251.255 256 US allocated 2026-07-01 db93161efa49…
204.52.221.0 – 204.52.221.255 256 US allocated 2026-07-01 f48baa605cd0…
204.52.222.0 – 204.52.222.255 256 PR allocated 2026-07-01 9643e67d57a8…
204.87.194.0 – 204.87.194.255 256 US allocated 2026-07-01 2d55ac1fb7cb…
204.128.170.0 – 204.128.170.255 256 US allocated 2026-07-01 87640e0f1841…
204.130.129.0 – 204.130.129.255 256 US allocated 2026-07-01 a74ceccc6cd6…
206.130.72.0 – 206.130.72.255 256 US allocated 2026-07-01 34a91dbf4535…
206.183.158.0 – 206.183.158.255 256 US allocated 2026-07-01 fa2bcb95fe76…
206.197.90.0 – 206.197.90.255 256 US allocated 2026-07-01 781cf49bbf05…
206.197.109.0 – 206.197.109.255 256 US allocated 2026-07-01 a805231d9f4f…
206.198.180.0 – 206.198.180.255 256 PR allocated 2026-07-01 674805dd67a8…
207.174.112.0 – 207.174.112.255 256 US allocated 2026-07-01 f7a953854b62…
208.67.72.0 – 208.67.75.255 1,024 US allocated 2026-07-01 f21a2b3294f7…
209.209.14.0 – 209.209.14.255 256 US allocated 2026-07-01 47029c5590e8…
216.21.241.0 – 216.21.241.255 256 US allocated 2026-07-01 4d1fb7820d3e…
216.21.242.0 – 216.21.243.255 512 US allocated 2026-07-01 4d9fb170f068…
216.21.252.0 – 216.21.255.255 1,024 US allocated 2026-07-01 dfa0f7a854d8…
23.160.212.0 – 23.160.212.255 256 US allocated 2026-06-30 522be47e60b5…
66.228.92.0 – 66.228.95.255 1,024 US allocated 2026-06-30 a6857cd94af1…
134.49.128.0 – 134.49.135.255 2,048 US allocated 2026-06-30 d8ff375857d7…
198.91.40.0 – 198.91.40.255 256 US allocated 2026-06-30 cef21c0b623b…
204.110.96.0 – 204.110.111.255 4,096 US allocated 2026-06-30 cf39727474a4…
209.135.154.0 – 209.135.155.255 512 US allocated 2026-06-30 d856f5c05a0f…
209.135.156.0 – 209.135.156.255 256 US allocated 2026-06-30 d856f5c05a0f…
216.245.188.0 – 216.245.188.255 256 US allocated 2026-06-30 03c6f462a279…
23.160.180.0 – 23.160.180.255 256 US allocated 2026-06-29 aae90b6b167b…
23.160.188.0 – 23.160.188.255 256 US allocated 2026-06-29 d83082464734…
23.160.196.0 – 23.160.196.255 256 CA allocated 2026-06-29 1c5e2798d750…
66.84.80.0 – 66.84.80.255 256 US allocated 2026-06-29 84b33d1d778d…
216.52.209.0 – 216.52.209.255 256 US allocated 2026-06-29 57bd8dc35cc4…
23.160.164.0 – 23.160.164.255 256 US allocated 2026-06-26 bcdadc2161c4…
23.160.172.0 – 23.160.172.255 256 US allocated 2026-06-26 75317fd76594…
45.74.184.0 – 45.74.187.255 1,024 US allocated 2026-06-26 dd05e8dfc5e1…
64.251.208.0 – 64.251.209.255 512 US allocated 2026-06-26 196a9a2d34d8…
131.162.236.0 – 131.162.239.255 1,024 US allocated 2026-06-26 d6fd4b90bf1c…
177.1.224.0 – 177.1.239.255 4,096 US allocated 2026-06-26 6699d4c582a3…
206.109.240.0 – 206.109.255.255 4,096 US allocated 2026-06-26 82a630f1b069…
209.99.168.0 – 209.99.175.255 2,048 US allocated 2026-06-26 f895f8a4b244…
216.152.72.0 – 216.152.75.255 1,024 US allocated 2026-06-26 85d97ec23f6d…
216.181.20.0 – 216.181.20.255 256 US allocated 2026-06-26 950f763d0a2e…
23.160.116.0 – 23.160.116.255 256 US allocated 2026-06-25 524d12551ae4…
23.160.132.0 – 23.160.132.255 256 TW allocated 2026-06-25 16cf35eb2275…
23.160.140.0 – 23.160.140.255 256 US allocated 2026-06-25 0787907e28c3…
207.207.210.0 – 207.207.210.255 256 US allocated 2026-06-25 6a11e32927f7…
23.160.92.0 – 23.160.92.255 256 CA allocated 2026-06-24 36776df1fd43…
23.160.100.0 – 23.160.100.255 256 US allocated 2026-06-24 329112703827…
23.160.108.0 – 23.160.108.255 256 US allocated 2026-06-24 b4cadd95cc29…
140.232.89.0 – 140.232.89.255 256 US allocated 2026-06-24 0d57f7c9864e…
151.185.192.0 – 151.185.255.255 16,384 US allocated 2026-06-24 7e0f5b8b99cd…
185.83.159.0 – 185.83.159.255 256 US allocated 2026-06-24 d6eee9c4be02…
207.207.211.0 – 207.207.211.255 256 US allocated 2026-06-24 59266e5f611e…
208.122.8.0 – 208.122.8.255 256 US allocated 2026-06-24 423fd3323372…
209.209.36.0 – 209.209.39.255 1,024 US allocated 2026-06-24 024c5752adb3…
23.160.68.0 – 23.160.68.255 256 MY allocated 2026-06-23 0992164dccb9…
23.160.84.0 – 23.160.84.255 256 US allocated 2026-06-23 3db15d06cf80…
168.151.32.0 – 168.151.39.255 2,048 US allocated 2026-06-23 1ab49409c0b6…
198.34.96.0 – 198.34.103.255 2,048 US allocated 2026-06-23 162c61fdef9d…
198.34.210.0 – 198.34.211.255 512 CA allocated 2026-06-23 c558aeb1ec8d…
198.34.244.0 – 198.34.245.255 512 US allocated 2026-06-23 f6eeef27d22e…
104.204.64.0 – 104.204.95.255 8,192 US allocated 2026-06-22 94689c4ce1ca…
179.253.224.0 – 179.253.255.255 8,192 US allocated 2026-06-22 dca4fa6f9780…
179.255.96.0 – 179.255.127.255 8,192 US allocated 2026-06-22 dca4fa6f9780…
179.255.128.0 – 179.255.159.255 8,192 US allocated 2026-06-22 dca4fa6f9780…
189.11.80.0 – 189.11.95.255 4,096 US allocated 2026-06-22 49aef9f2c8bf…
189.11.96.0 – 189.11.111.255 4,096 US allocated 2026-06-22 49aef9f2c8bf…
191.222.208.0 – 191.222.223.255 4,096 US allocated 2026-06-22 dca4fa6f9780…
191.223.208.0 – 191.223.223.255 4,096 US allocated 2026-06-22 dca4fa6f9780…
205.223.32.0 – 205.223.47.255 4,096 US allocated 2026-06-22 6c5311acba1f…
208.122.12.0 – 208.122.13.255 512 US allocated 2026-06-22 d2bd58d1b2c1…
23.160.28.0 – 23.160.28.255 256 US allocated 2026-06-18 6fca26236abc…
23.160.36.0 – 23.160.36.255 256 US allocated 2026-06-18 b2f4822de4f0…
23.160.44.0 – 23.160.44.255 256 US allocated 2026-06-18 2bdb6dcb260f…
23.160.52.0 – 23.160.52.255 256 US allocated 2026-06-18 a4182d7b9e63…
23.160.60.0 – 23.160.60.255 256 US allocated 2026-06-18 268c218fc4cf…
23.160.76.0 – 23.160.76.255 256 US allocated 2026-06-18 8cc9d81f8e31…
48.80.0.0 – 48.95.255.255 1,048,576 US allocated 2026-06-17 375c0a992571…
48.128.0.0 – 48.159.255.255 2,097,152 US allocated 2026-06-17 375c0a992571…
66.171.36.0 – 66.171.37.255 512 US allocated 2026-06-17 365342ac5d7f…
153.61.0.0 – 153.61.255.255 65,536 US allocated 2026-06-17 8be5a180db79…
165.217.192.0 – 165.217.255.255 16,384 US allocated 2026-06-17 4cbfdfccc395…
198.52.37.0 – 198.52.37.255 256 US allocated 2026-06-17 93f15c890c72…
199.104.21.0 – 199.104.21.255 256 US allocated 2026-06-17 5f4bef261c36…
207.186.207.0 – 207.186.207.255 256 US allocated 2026-06-17 85eb8ed7ebe1…
209.196.96.0 – 209.196.127.255 8,192 US allocated 2026-06-17 b16f93739134…
104.204.56.0 – 104.204.59.255 1,024 US allocated 2026-06-16 6699d4c582a3…
144.90.0.0 – 144.90.255.255 65,536 US allocated 2026-06-16 a606d4349c42…
147.185.52.0 – 147.185.55.255 1,024 US allocated 2026-06-16 2b2ae3e4e6dd…
159.198.16.0 – 159.198.31.255 4,096 US allocated 2026-06-16 0adaa4669c2b…
23.160.20.0 – 23.160.20.255 256 US allocated 2026-06-15 113f695cb0b2…
104.218.239.0 – 104.218.239.255 256 US allocated 2026-06-15 12346e217e98…
136.176.64.0 – 136.176.127.255 16,384 US allocated 2026-06-15 68b3a6c125b9…
23.159.244.0 – 23.159.244.255 256 US allocated 2026-06-12 b5b2b27a9866…
23.159.252.0 – 23.159.252.255 256 US allocated 2026-06-12 1cd4f2c06197…
23.160.4.0 – 23.160.4.255 256 US allocated 2026-06-12 227769ea60d4…
23.160.12.0 – 23.160.12.255 256 US allocated 2026-06-12 e98c23871e1a…
66.242.50.0 – 66.242.51.255 512 US allocated 2026-06-12 6699d4c582a3…
136.143.192.0 – 136.143.193.255 512 US allocated 2026-06-12 d128a3e553da…
142.99.108.0 – 142.99.111.255 1,024 US allocated 2026-06-12 7f2ad2b43534…
168.151.240.0 – 168.151.247.255 2,048 US allocated 2026-06-12 c106d5bdaf81…
207.186.204.0 – 207.186.205.255 512 US allocated 2026-06-12 5268539bab85…
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