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
1.64B
1,644,546,048
📦
IPv4 networks
77,308
delegated blocks
🧭
IPv6 networks
11,579
delegated blocks
🔗
Autonomous systems
34,292
ASNs
// browse the objects
Browse the ARIN registry
| Range | Addresses | Country | Status | Allocated | Org handle |
|---|---|---|---|---|---|
| 128.13.0.0 – 128.13.255.255 | 65,536 |  US |
allocated | 1983-02-24 | e6750e8cf750… |
| 128.15.0.0 – 128.15.255.255 | 65,536 | US |
allocated | 1983-02-24 | 2be2a0b0a861… |
| 128.18.0.0 – 128.18.255.255 | 65,536 | US |
allocated | 1983-02-24 | 2784ce9dbeb2… |
| 192.5.9.0 – 192.5.9.255 | 256 | US |
allocated | 1983-01-19 | aa2650ff1df5… |
| 192.5.10.0 – 192.5.10.255 | 256 | US |
allocated | 1983-01-19 | 7d9a2925b1a0… |
| 192.5.21.0 – 192.5.21.255 | 256 | US |
allocated | 1982-12-13 | 45fe880b68a8… |
| 192.5.22.0 – 192.5.23.255 | 512 | US |
allocated | 1982-12-13 | 45fe880b68a8… |
| 192.5.24.0 – 192.5.25.255 | 512 | US |
allocated | 1982-12-13 | 45fe880b68a8… |
| 23.128.1.0 – 23.128.3.255 | 768 | — | reserved | — | … |
| 23.128.5.0 – 23.128.11.255 | 1,792 | — | reserved | — | … |
| 23.128.13.0 – 23.128.15.255 | 768 | — | reserved | — | … |
| 23.128.17.0 – 23.128.19.255 | 768 | — | reserved | — | … |
| 23.128.21.0 – 23.128.27.255 | 1,792 | — | reserved | — | … |
| 23.128.29.0 – 23.128.31.255 | 768 | — | reserved | — | … |
| 23.128.33.0 – 23.128.35.255 | 768 | — | reserved | — | … |
| 23.128.37.0 – 23.128.39.255 | 768 | — | reserved | — | … |
| 23.128.41.0 – 23.128.43.255 | 768 | — | reserved | — | … |
| 23.128.45.0 – 23.128.47.255 | 768 | — | reserved | — | … |
| 23.128.49.0 – 23.128.51.255 | 768 | — | reserved | — | … |
| 23.128.53.0 – 23.128.55.255 | 768 | — | reserved | — | … |
| 23.128.57.0 – 23.128.59.255 | 768 | — | reserved | — | … |
| 23.128.61.0 – 23.128.63.255 | 768 | — | reserved | — | … |
| 23.128.66.0 – 23.128.75.255 | 2,560 | — | reserved | — | … |
| 23.128.77.0 – 23.128.79.255 | 768 | — | reserved | — | … |
| 23.128.81.0 – 23.128.81.255 | 256 | — | reserved | — | … |
| 23.128.83.0 – 23.128.83.255 | 256 | — | reserved | — | … |
| 23.128.85.0 – 23.128.87.255 | 768 | — | reserved | — | … |
| 23.128.89.0 – 23.128.91.255 | 768 | — | reserved | — | … |
| 23.128.93.0 – 23.128.95.255 | 768 | — | reserved | — | … |
| 23.128.99.0 – 23.128.99.255 | 256 | — | reserved | — | … |
| 23.128.101.0 – 23.128.103.255 | 768 | — | reserved | — | … |
| 23.128.106.0 – 23.128.107.255 | 512 | — | reserved | — | … |
| 23.128.109.0 – 23.128.111.255 | 768 | — | reserved | — | … |
| 23.128.113.0 – 23.128.115.255 | 768 | — | reserved | — | … |
| 23.128.117.0 – 23.128.119.255 | 768 | — | reserved | — | … |
| 23.128.123.0 – 23.128.123.255 | 256 | — | reserved | — | … |
| 23.128.125.0 – 23.128.127.255 | 768 | — | reserved | — | … |
| 23.128.130.0 – 23.128.131.255 | 512 | — | reserved | — | … |
| 23.128.133.0 – 23.128.135.255 | 768 | — | reserved | — | … |
| 23.128.137.0 – 23.128.139.255 | 768 | — | reserved | — | … |
| 23.128.141.0 – 23.128.143.255 | 768 | — | reserved | — | … |
| 23.128.149.0 – 23.128.155.255 | 1,792 | — | reserved | — | … |
| 23.128.157.0 – 23.128.159.255 | 768 | — | reserved | — | … |
| 23.128.161.0 – 23.128.163.255 | 768 | — | reserved | — | … |
| 23.128.165.0 – 23.128.167.255 | 768 | — | reserved | — | … |
| 23.128.169.0 – 23.128.171.255 | 768 | — | reserved | — | … |
| 23.128.173.0 – 23.128.179.255 | 1,792 | — | reserved | — | … |
| 23.128.181.0 – 23.128.183.255 | 768 | — | reserved | — | … |
| 23.128.185.0 – 23.128.187.255 | 768 | — | reserved | — | … |
| 23.128.189.0 – 23.128.191.255 | 768 | — | reserved | — | … |
| 23.128.193.0 – 23.128.195.255 | 768 | — | reserved | — | … |
| 23.128.197.0 – 23.128.199.255 | 768 | — | reserved | — | … |
| 23.128.201.0 – 23.128.203.255 | 768 | — | reserved | — | … |
| 23.128.205.0 – 23.128.207.255 | 768 | — | reserved | — | … |
| 23.128.209.0 – 23.128.211.255 | 768 | — | reserved | — | … |
| 23.128.213.0 – 23.128.215.255 | 768 | — | reserved | — | … |
| 23.128.217.0 – 23.128.219.255 | 768 | — | reserved | — | … |
| 23.128.221.0 – 23.128.223.255 | 768 | — | reserved | — | … |
| 23.128.225.0 – 23.128.227.255 | 768 | — | reserved | — | … |
| 23.128.229.0 – 23.128.231.255 | 768 | — | reserved | — | … |
| 23.128.233.0 – 23.128.235.255 | 768 | — | reserved | — | … |
| 23.128.237.0 – 23.128.239.255 | 768 | — | reserved | — | … |
| 23.128.241.0 – 23.128.247.255 | 1,792 | — | reserved | — | … |
| 23.128.249.0 – 23.128.251.255 | 768 | — | reserved | — | … |
| 23.128.253.0 – 23.128.255.255 | 768 | — | reserved | — | … |
| 23.129.1.0 – 23.129.3.255 | 768 | — | reserved | — | … |
| 23.129.5.0 – 23.129.7.255 | 768 | — | reserved | — | … |
| 23.129.9.0 – 23.129.11.255 | 768 | — | reserved | — | … |
| 23.129.13.0 – 23.129.15.255 | 768 | — | reserved | — | … |
| 23.129.17.0 – 23.129.23.255 | 1,792 | — | reserved | — | … |
| 23.129.25.0 – 23.129.27.255 | 768 | — | reserved | — | … |
| 23.129.29.0 – 23.129.31.255 | 768 | — | reserved | — | … |
| 23.129.33.0 – 23.129.35.255 | 768 | — | reserved | — | … |
| 23.129.37.0 – 23.129.43.255 | 1,792 | — | reserved | — | … |
| 23.129.45.0 – 23.129.47.255 | 768 | — | reserved | — | … |
| 23.129.50.0 – 23.129.51.255 | 512 | — | reserved | — | … |
| 23.129.53.0 – 23.129.63.255 | 2,816 | — | reserved | — | … |
| 23.129.65.0 – 23.129.67.255 | 768 | — | reserved | — | … |
| 23.129.69.0 – 23.129.75.255 | 1,792 | — | reserved | — | … |
| 23.129.77.0 – 23.129.79.255 | 768 | — | reserved | — | … |
| 23.129.81.0 – 23.129.81.255 | 256 | — | reserved | — | … |
| 23.129.83.0 – 23.129.83.255 | 256 | — | reserved | — | … |
| 23.129.85.0 – 23.129.87.255 | 768 | — | reserved | — | … |
| 23.129.89.0 – 23.129.91.255 | 768 | — | reserved | — | … |
| 23.129.93.0 – 23.129.95.255 | 768 | — | reserved | — | … |
| 23.129.97.0 – 23.129.99.255 | 768 | — | reserved | — | … |
| 23.129.101.0 – 23.129.103.255 | 768 | — | reserved | — | … |
| 23.129.105.0 – 23.129.107.255 | 768 | — | reserved | — | … |
| 23.129.109.0 – 23.129.115.255 | 1,792 | — | reserved | — | … |
| 23.129.117.0 – 23.129.119.255 | 768 | — | reserved | — | … |
| 23.129.121.0 – 23.129.123.255 | 768 | — | reserved | — | … |
| 23.129.125.0 – 23.129.127.255 | 768 | — | reserved | — | … |
| 23.129.129.0 – 23.129.131.255 | 768 | — | reserved | — | … |
| 23.129.133.0 – 23.129.139.255 | 1,792 | — | reserved | — | … |
| 23.129.141.0 – 23.129.143.255 | 768 | — | reserved | — | … |
| 23.129.145.0 – 23.129.147.255 | 768 | — | reserved | — | … |
| 23.129.149.0 – 23.129.151.255 | 768 | — | reserved | — | … |
| 23.129.153.0 – 23.129.155.255 | 768 | — | reserved | — | … |
| 23.129.157.0 – 23.129.159.255 | 768 | — | reserved | — | … |
| 23.129.161.0 – 23.129.163.255 | 768 | — | reserved | — | … |