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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
199.120.228.0 – 199.120.229.255 512 US allocated 2026-05-15 b86c84374658…
209.135.130.0 – 209.135.130.255 256 US allocated 2026-05-15 4129d6173abd…
23.158.44.0 – 23.158.44.255 256 US allocated 2026-05-14 de2a4d781870…
64.29.160.0 – 64.29.175.255 4,096 CA allocated 2026-05-14 f25fb54af87b…
136.143.200.0 – 136.143.200.255 256 US allocated 2026-05-14 3ee2c474a613…
23.158.20.0 – 23.158.20.255 256 CA allocated 2026-05-13 39357278f65d…
23.190.24.0 – 23.190.24.255 256 US allocated 2026-05-13 56f3740fef0e…
187.40.128.0 – 187.40.191.255 16,384 US allocated 2026-05-13 b76bca2ed648…
207.241.184.0 – 207.241.184.255 256 US allocated 2026-05-13 7c97acedbf7d…
213.239.137.0 – 213.239.137.255 256 US allocated 2026-05-13 37c991ab32e3…
153.75.192.0 – 153.75.207.255 4,096 US allocated 2026-05-12 18f1fd1089d3…
204.62.124.0 – 204.62.125.255 512 US allocated 2026-05-12 dcb34a085edc…
204.62.126.0 – 204.62.126.255 256 US allocated 2026-05-12 dcb34a085edc…
208.71.248.0 – 208.71.249.255 512 US allocated 2026-05-12 66f4d2b14c5e…
209.135.147.0 – 209.135.147.255 256 US allocated 2026-05-12 e147263eb7d6…
23.157.244.0 – 23.157.244.255 256 US allocated 2026-05-11 1f3718bcac3a…
23.158.4.0 – 23.158.4.255 256 CA allocated 2026-05-11 4e97eb1b9432…
23.158.12.0 – 23.158.12.255 256 US allocated 2026-05-11 d906a5219094…
23.158.28.0 – 23.158.28.255 256 US allocated 2026-05-11 03a7ebdf09dd…
23.157.252.0 – 23.157.252.255 256 TH allocated 2026-05-08 1c7ded91a94a…
66.179.116.0 – 66.179.119.255 1,024 US allocated 2026-05-08 8e64c11e723c…
134.49.248.0 – 134.49.251.255 1,024 US allocated 2026-05-08 e4b102803afa…
153.60.0.0 – 153.60.31.255 8,192 US allocated 2026-05-08 43a2bf5c4478…
153.75.208.0 – 153.75.223.255 4,096 US allocated 2026-05-08 43a2bf5c4478…
23.157.196.0 – 23.157.196.255 256 US allocated 2026-05-07 7ab1da403fe2…
23.157.204.0 – 23.157.204.255 256 TH allocated 2026-05-07 29ad72b2fded…
23.157.212.0 – 23.157.212.255 256 US allocated 2026-05-07 c7fe4509ef79…
23.157.228.0 – 23.157.228.255 256 US allocated 2026-05-07 090bf85e94da…
23.157.236.0 – 23.157.236.255 256 MX allocated 2026-05-07 6745dfc74b45…
91.103.141.0 – 91.103.141.255 256 US allocated 2026-05-07 beef642041e1…
74.121.248.0 – 74.121.255.255 2,048 US allocated 2026-05-06 ceaa1028061c…
153.57.128.0 – 153.57.191.255 16,384 US allocated 2026-05-06 9110af53e7fc…
153.75.112.0 – 153.75.127.255 4,096 US allocated 2026-05-06 51d4775cc480…
167.104.196.0 – 167.104.199.255 1,024 US allocated 2026-05-06 7894cd538363…
199.115.174.0 – 199.115.174.255 256 US allocated 2026-05-06 cf4bea0a2420…
23.157.180.0 – 23.157.180.255 256 US allocated 2026-05-05 88d320063aef…
149.112.198.0 – 149.112.198.255 256 US allocated 2026-05-05 ef8b1c4f9db6…
149.112.199.0 – 149.112.199.255 256 US allocated 2026-05-05 9424b1a84904…
23.157.164.0 – 23.157.164.255 256 US allocated 2026-05-01 b1bd10b1a1b0…
31.207.2.0 – 31.207.3.255 512 CA allocated 2026-05-01 f793593e19e0…
23.157.148.0 – 23.157.148.255 256 US allocated 2026-04-30 8b13407d0617…
23.157.172.0 – 23.157.172.255 256 US allocated 2026-04-30 aeb1d1a074fc…
170.101.96.0 – 170.101.127.255 8,192 US allocated 2026-04-30 68b3a6c125b9…
23.157.124.0 – 23.157.124.255 256 US allocated 2026-04-28 f5726c0a014d…
23.157.132.0 – 23.157.132.255 256 US allocated 2026-04-28 6c51f00728ab…
23.157.140.0 – 23.157.140.255 256 US allocated 2026-04-28 86d61b06bfbf…
23.157.156.0 – 23.157.156.255 256 US allocated 2026-04-28 1336908a29b7…
66.171.34.0 – 66.171.35.255 512 US allocated 2026-04-28 5b9ecfcd96b0…
74.117.191.0 – 74.117.191.255 256 US allocated 2026-04-28 08851718061f…
152.55.252.0 – 152.55.255.255 1,024 US allocated 2026-04-28 f04f3cf156c3…
45.74.252.0 – 45.74.253.255 512 US allocated 2026-04-27 3c1f05563829…
66.242.52.0 – 66.242.55.255 1,024 US allocated 2026-04-27 5802f64064ee…
131.162.232.0 – 131.162.235.255 1,024 US allocated 2026-04-27 75653ec5e5a4…
149.112.197.0 – 149.112.197.255 256 US allocated 2026-04-27 b1f55129482b…
161.13.192.0 – 161.13.255.255 16,384 US allocated 2026-04-27 dec8e3d28d2c…
201.79.0.0 – 201.79.255.255 65,536 US allocated 2026-04-27 cd0f3b8e7d94…
66.203.253.0 – 66.203.253.255 256 US allocated 2026-04-24 30d6aa504358…
153.75.16.0 – 153.75.31.255 4,096 US allocated 2026-04-24 84c3140cbd6c…
179.199.192.0 – 179.199.255.255 16,384 US allocated 2026-04-24 5d19dcc66287…
186.241.64.0 – 186.241.127.255 16,384 US allocated 2026-04-24 5d19dcc66287…
186.244.192.0 – 186.244.255.255 16,384 US allocated 2026-04-24 5d19dcc66287…
191.45.64.0 – 191.45.127.255 16,384 US allocated 2026-04-24 4fe3d5db5b0d…
208.71.255.0 – 208.71.255.255 256 CA allocated 2026-04-24 0b17ee341e2c…
23.157.100.0 – 23.157.100.255 256 US allocated 2026-04-23 66dd32509ffa…
31.207.0.0 – 31.207.0.255 256 US allocated 2026-04-23 4a51f7c59c29…
208.83.32.0 – 208.83.35.255 1,024 US allocated 2026-04-23 c00f154df180…
23.157.52.0 – 23.157.52.255 256 US allocated 2026-04-22 7823b1056a7a…
23.157.108.0 – 23.157.108.255 256 TH allocated 2026-04-22 9319078e8ead…
192.65.19.0 – 192.65.19.255 256 US allocated 2026-04-22 6e174e0c94ac…
192.158.108.0 – 192.158.108.255 256 US allocated 2026-04-22 6e174e0c94ac…
202.37.194.0 – 202.37.194.255 256 US allocated 2026-04-22 2f43ee0a3d45…
209.195.240.0 – 209.195.243.255 1,024 CA allocated 2026-04-22 dbeeaeb280ee…
23.157.36.0 – 23.157.36.255 256 US allocated 2026-04-21 309e0a1df8bf…
23.157.44.0 – 23.157.44.255 256 US allocated 2026-04-21 be9d0b1c4a78…
23.157.60.0 – 23.157.60.255 256 US allocated 2026-04-21 2c6255089af7…
69.48.224.0 – 69.48.227.255 1,024 US allocated 2026-04-21 defa826023b9…
194.61.156.0 – 194.61.157.255 512 CA allocated 2026-04-21 60725bea2095…
198.60.224.0 – 198.60.225.255 512 US allocated 2026-04-21 a4825e709daf…
23.156.244.0 – 23.156.244.255 256 US allocated 2026-04-20 abc8cd28317e…
23.157.20.0 – 23.157.20.255 256 US allocated 2026-04-20 e8547bd5228e…
140.232.184.0 – 140.232.191.255 2,048 US allocated 2026-04-20 758951cac5e6…
167.254.192.0 – 167.254.199.255 2,048 US allocated 2026-04-20 3631c931b209…
192.158.140.0 – 192.158.141.255 512 US allocated 2026-04-20 1a656f336321…
206.63.128.0 – 206.63.255.255 32,768 US allocated 2026-04-20 7ef6e8f53a0a…
23.156.212.0 – 23.156.212.255 256 TH allocated 2026-04-17 431643f982fc…
23.156.220.0 – 23.156.220.255 256 US allocated 2026-04-17 84a958d739af…
64.16.128.0 – 64.16.191.255 16,384 US allocated 2026-04-17 40662a4b5a34…
75.125.0.0 – 75.125.255.255 65,536 US allocated 2026-04-17 96d8636ecbf4…
134.49.252.0 – 134.49.255.255 1,024 US allocated 2026-04-17 177a67130f3f…
161.210.188.0 – 161.210.188.255 256 US allocated 2026-04-17 09102ed0a0b1…
23.156.180.0 – 23.156.180.255 256 US allocated 2026-04-16 37e9ee3acd3b…
23.156.188.0 – 23.156.188.255 256 US allocated 2026-04-16 a458a1f5ae7d…
23.156.196.0 – 23.156.196.255 256 TH allocated 2026-04-16 653198c58da9…
23.156.204.0 – 23.156.204.255 256 PH allocated 2026-04-16 ecd7d144c977…
74.209.183.0 – 74.209.183.255 256 US allocated 2026-04-16 a689d973e09c…
140.232.92.0 – 140.232.92.255 256 US allocated 2026-04-16 449d4a93cce8…
153.75.0.0 – 153.75.15.255 4,096 US allocated 2026-04-16 86f2f6199833…
169.197.176.0 – 169.197.179.255 1,024 US allocated 2026-04-16 0dac54d231ac…
189.25.0.0 – 189.25.255.255 65,536 US allocated 2026-04-16 38b893ecb59b…
206.209.218.0 – 206.209.219.255 512 US allocated 2026-04-16 3a91bbfe3c73…
401–500 of 80,536 « first‹ prev 34567 next ›last » of 806