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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
204.89.147.0 – 204.89.147.255 256 US allocated 2025-05-20 6326a98314bc…
207.244.128.0 – 207.244.129.255 512 US allocated 2025-05-20 a19103b7497d…
23.138.244.0 – 23.138.244.255 256 US allocated 2025-05-19 7895625aaa45…
23.138.252.0 – 23.138.252.255 256 US allocated 2025-05-19 630fa3e2b24d…
173.209.224.0 – 173.209.227.255 1,024 US allocated 2025-05-19 a32890da06d6…
23.138.228.0 – 23.138.228.255 256 US allocated 2025-05-16 f6b178375a23…
23.138.236.0 – 23.138.236.255 256 US allocated 2025-05-16 c50d891f91d9…
149.112.176.0 – 149.112.176.255 256 US allocated 2025-05-16 4ce392643ac3…
161.115.208.0 – 161.115.223.255 4,096 US allocated 2025-05-16 e346b68a5c07…
70.35.144.0 – 70.35.144.255 256 US allocated 2025-05-15 6733f074d123…
198.133.234.0 – 198.133.234.255 256 US allocated 2025-05-15 dd4e8612867c…
199.189.166.0 – 199.189.167.255 512 CA allocated 2025-05-15 e2dbcc45853d…
23.138.220.0 – 23.138.220.255 256 US allocated 2025-05-14 9b218a5221aa…
66.33.58.0 – 66.33.59.255 512 US allocated 2025-05-14 cf2a25f11eaa…
107.151.48.0 – 107.151.63.255 4,096 US allocated 2025-05-14 0c70d0786185…
108.175.16.0 – 108.175.31.255 4,096 US allocated 2025-05-14 f25a55f07c7e…
192.198.188.0 – 192.198.191.255 1,024 US allocated 2025-05-14 ff626d340cb2…
209.188.102.0 – 209.188.102.255 256 US allocated 2025-05-14 a8d2c871c55b…
23.138.212.0 – 23.138.212.255 256 US allocated 2025-05-13 6ac4ae952c99…
64.239.20.0 – 64.239.21.255 512 US allocated 2025-05-13 398fb0a40b27…
66.51.100.0 – 66.51.103.255 1,024 US allocated 2025-05-13 5cd36112c92a…
70.35.155.0 – 70.35.155.255 256 US allocated 2025-05-13 375d674d079d…
192.135.144.0 – 192.135.144.255 256 US allocated 2025-05-13 ae2f2a148877…
198.49.92.0 – 198.49.93.255 512 US allocated 2025-05-13 ae2f2a148877…
204.17.133.0 – 204.17.133.255 256 US allocated 2025-05-13 80673383d7f6…
23.138.204.0 – 23.138.204.255 256 US allocated 2025-05-12 d178dbdd15b9…
66.33.38.0 – 66.33.39.255 512 US allocated 2025-05-12 c5f247ea0973…
192.104.10.0 – 192.104.10.255 256 US allocated 2025-05-12 9ce656a7e4b9…
209.92.32.0 – 209.92.35.255 1,024 US allocated 2025-05-12 3355f7488fdf…
23.138.196.0 – 23.138.196.255 256 US allocated 2025-05-09 6288810fd60d…
104.128.70.0 – 104.128.71.255 512 US allocated 2025-05-09 b634b7f35844…
163.53.212.0 – 163.53.215.255 1,024 US allocated 2025-05-09 3162b6feead1…
199.189.120.0 – 199.189.123.255 1,024 US allocated 2025-05-09 ae2f2a148877…
143.246.144.0 – 143.246.151.255 2,048 US allocated 2025-05-08 b62a5cf8b7ae…
199.96.144.0 – 199.96.151.255 2,048 US allocated 2025-05-08 da94f4079993…
23.138.180.0 – 23.138.180.255 256 US allocated 2025-05-07 ad82deb939eb…
74.113.238.0 – 74.113.238.255 256 US allocated 2025-05-07 3528ae12148f…
115.42.46.0 – 115.42.46.255 256 CA allocated 2025-05-07 2b0c66ce5255…
136.175.240.0 – 136.175.240.255 256 US allocated 2025-05-07 e4bfbf9031ac…
23.138.172.0 – 23.138.172.255 256 US allocated 2025-05-06 11d34f0c4ff1…
170.23.0.0 – 170.23.127.255 32,768 US allocated 2025-05-06 028f5d08b869…
203.31.160.0 – 203.31.160.255 256 US allocated 2025-05-06 0219f974abe3…
207.22.48.0 – 207.22.55.255 2,048 US allocated 2025-05-06 0eccd04b169b…
208.74.66.0 – 208.74.66.255 256 US allocated 2025-05-06 0eccd04b169b…
23.138.164.0 – 23.138.164.255 256 US allocated 2025-05-05 f07cf39cb7f7…
66.199.236.0 – 66.199.239.255 1,024 US allocated 2025-05-05 26466b36a1dd…
96.45.64.0 – 96.45.67.255 1,024 US allocated 2025-05-05 26466b36a1dd…
128.128.96.0 – 128.128.127.255 8,192 US allocated 2025-05-05 f0418d5e7cbb…
23.138.156.0 – 23.138.156.255 256 US allocated 2025-05-02 35a2f068cce3…
115.42.47.0 – 115.42.47.255 256 US allocated 2025-05-02 cee749c30b7b…
23.138.29.0 – 23.138.29.255 256 US allocated 2025-05-01 c7b58b43769d…
65.181.119.0 – 65.181.119.255 256 US allocated 2025-05-01 a213bd390c86…
157.239.0.0 – 157.239.31.255 8,192 US allocated 2025-05-01 36b67e84d8e1…
161.115.192.0 – 161.115.207.255 4,096 US allocated 2025-05-01 2fd7c84eef41…
198.32.144.0 – 198.32.144.255 256 US allocated 2025-05-01 b8c3f0d82dd0…
198.98.22.0 – 198.98.23.255 512 US allocated 2025-05-01 cdfcd46a2bd0…
205.147.224.0 – 205.147.231.255 2,048 US allocated 2025-05-01 b5068754bada…
64.235.0.0 – 64.235.15.255 4,096 US allocated 2025-04-30 aa9f4fccd26c…
198.133.235.0 – 198.133.235.255 256 US allocated 2025-04-30 876efc09f3ca…
205.147.203.0 – 205.147.203.255 256 US allocated 2025-04-30 7039412a1750…
207.126.40.0 – 207.126.47.255 2,048 US allocated 2025-04-30 187fedea1566…
23.138.132.0 – 23.138.132.255 256 US allocated 2025-04-29 48a1a5778e29…
23.138.140.0 – 23.138.140.255 256 US allocated 2025-04-29 2da762775bfb…
23.138.148.0 – 23.138.148.255 256 US allocated 2025-04-29 a48072f978c2…
124.198.160.0 – 124.198.191.255 8,192 US allocated 2025-04-29 1732fc827803…
149.112.132.0 – 149.112.132.255 256 US allocated 2025-04-29 bbd746cef507…
190.99.80.0 – 190.99.83.255 1,024 US allocated 2025-04-29 cc23ce1a16b4…
208.83.110.0 – 208.83.110.255 256 US allocated 2025-04-29 beabf886d0a2…
216.176.40.0 – 216.176.43.255 1,024 CA allocated 2025-04-29 e93783834ff4…
23.138.124.0 – 23.138.124.255 256 US allocated 2025-04-28 3efa4e0e98c6…
64.34.80.0 – 64.34.95.255 4,096 US allocated 2025-04-28 059b1f0a93b0…
65.181.96.0 – 65.181.103.255 2,048 US allocated 2025-04-28 5193f5f50b8f…
70.35.145.0 – 70.35.145.255 256 US allocated 2025-04-28 14faecca6926…
80.126.0.0 – 80.127.255.255 131,072 US allocated 2025-04-28 20c786e8edd8…
83.160.0.0 – 83.163.255.255 262,144 US allocated 2025-04-28 20c786e8edd8…
103.21.81.0 – 103.21.81.255 256 US allocated 2025-04-28 09cb22346bde…
103.226.246.0 – 103.226.246.255 256 US allocated 2025-04-28 09cb22346bde…
124.197.0.0 – 124.197.15.255 4,096 US allocated 2025-04-28 93e2c77c3b92…
165.245.0.0 – 165.245.127.255 32,768 CA allocated 2025-04-28 7f8d2810def2…
23.138.100.0 – 23.138.100.255 256 US allocated 2025-04-25 3b9229b4af15…
23.138.108.0 – 23.138.108.255 256 US allocated 2025-04-25 aaa39a3f8e0a…
23.138.116.0 – 23.138.116.255 256 US allocated 2025-04-25 7c4e42301ded…
207.166.139.0 – 207.166.139.255 256 US allocated 2025-04-25 6fe490b4279d…
208.88.96.0 – 208.88.103.255 2,048 US allocated 2025-04-25 f2a459b33f50…
23.138.76.0 – 23.138.76.255 256 US allocated 2025-04-24 fa1b5792c3ba…
23.138.84.0 – 23.138.84.255 256 US allocated 2025-04-24 6b8b682d4a38…
23.138.92.0 – 23.138.92.255 256 US allocated 2025-04-24 0fbbd641f1f7…
148.222.158.0 – 148.222.158.255 256 US allocated 2025-04-24 6b979269fa3f…
162.120.86.0 – 162.120.87.255 512 US allocated 2025-04-24 fb6e01e26522…
165.245.128.0 – 165.245.255.255 32,768 US allocated 2025-04-24 cd0f3b8e7d94…
198.38.64.0 – 198.38.71.255 2,048 US allocated 2025-04-24 a0bacfb5ea68…
23.138.52.0 – 23.138.52.255 256 US allocated 2025-04-23 77bb6ed15908…
23.138.60.0 – 23.138.60.255 256 US allocated 2025-04-23 40f4034e3a66…
23.138.68.0 – 23.138.68.255 256 US allocated 2025-04-23 5ac47f26ea48…
64.119.48.0 – 64.119.63.255 4,096 US allocated 2025-04-23 c8f62a69294f…
143.246.152.0 – 143.246.159.255 2,048 US allocated 2025-04-23 16b031841861…
23.138.44.0 – 23.138.44.255 256 TH allocated 2025-04-22 8f8a8a487a89…
65.181.110.0 – 65.181.110.255 256 CA allocated 2025-04-22 305a36d760d7…
138.129.0.0 – 138.129.15.255 4,096 US allocated 2025-04-22 947f1bf5e972…
142.204.64.0 – 142.204.95.255 8,192 US allocated 2025-04-22 1e02279c22c8…
2,901–3,000 of 80,536 « first‹ prev 2829303132 next ›last » of 806