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
| Prefix | Country | Status | Allocated | Org handle |
|---|---|---|---|---|
| 2001:52c::/30 | — | reserved | — | … |
| 2001:531::/32 | — | reserved | — | … |
| 2001:532::/31 | — | reserved | — | … |
| 2001:534::/30 | — | reserved | — | … |
| 2001:539::/32 | — | reserved | — | … |
| 2001:53a::/31 | — | reserved | — | … |
| 2001:53c::/30 | — | reserved | — | … |
| 2001:540::/29 | — | available | — | … |
| 2001:549::/32 | — | reserved | — | … |
| 2001:54a::/31 | — | reserved | — | … |
| 2001:54c::/30 | — | reserved | — | … |
| 2001:551::/32 | — | reserved | — | … |
| 2001:552::/31 | — | reserved | — | … |
| 2001:554::/30 | — | reserved | — | … |
| 2001:561::/32 | — | reserved | — | … |
| 2001:562::/31 | — | reserved | — | … |
| 2001:564::/30 | — | reserved | — | … |
| 2001:571::/32 | — | reserved | — | … |
| 2001:572::/31 | — | reserved | — | … |
| 2001:574::/30 | — | reserved | — | … |
| 2001:57c::/30 | — | reserved | — | … |
| 2001:581::/32 | — | reserved | — | … |
| 2001:582::/31 | — | reserved | — | … |
| 2001:584::/30 | — | reserved | — | … |
| 2001:588::/29 | — | available | — | … |
| 2001:591::/32 | — | reserved | — | … |
| 2001:592::/31 | — | reserved | — | … |
| 2001:594::/30 | — | reserved | — | … |
| 2001:599::/32 | — | reserved | — | … |
| 2001:59a::/31 | — | reserved | — | … |
| 2001:59c::/30 | — | reserved | — | … |
| 2001:5a1::/32 | — | reserved | — | … |
| 2001:5a2::/31 | — | reserved | — | … |
| 2001:5a4::/30 | — | reserved | — | … |
| 2001:5a9::/32 | — | reserved | — | … |
| 2001:5aa::/31 | — | reserved | — | … |
| 2001:5ac::/30 | — | reserved | — | … |
| 2001:5b1::/32 | — | reserved | — | … |
| 2001:5b2::/31 | — | reserved | — | … |
| 2001:5b4::/30 | — | reserved | — | … |
| 2001:5b9::/32 | — | reserved | — | … |
| 2001:5ba::/31 | — | reserved | — | … |
| 2001:5bc::/30 | — | reserved | — | … |
| 2001:5c0::/36 | — | available | — | … |
| 2001:5c0:1000::/36 | — | reserved | — | … |
| 2001:5c0:2000::/35 | — | reserved | — | … |
| 2001:5c0:4000::/34 | — | reserved | — | … |
| 2001:5c0:8000::/33 | — | reserved | — | … |
| 2001:5c1::/32 | — | reserved | — | … |
| 2001:5c2::/31 | — | reserved | — | … |
| 2001:5c4::/30 | — | reserved | — | … |
| 2001:5c9::/32 | — | reserved | — | … |
| 2001:5ca::/31 | — | reserved | — | … |
| 2001:5cc::/30 | — | reserved | — | … |
| 2001:5d1::/32 | — | reserved | — | … |
| 2001:5d2::/31 | — | reserved | — | … |
| 2001:5d4::/30 | — | reserved | — | … |
| 2001:5d9::/32 | — | reserved | — | … |
| 2001:5da::/31 | — | reserved | — | … |
| 2001:5dc::/30 | — | reserved | — | … |
| 2001:5e1::/32 | — | reserved | — | … |
| 2001:5e2::/31 | — | reserved | — | … |
| 2001:5e4::/30 | — | reserved | — | … |
| 2001:5e9::/32 | — | reserved | — | … |
| 2001:5ea::/31 | — | reserved | — | … |
| 2001:5ec::/30 | — | reserved | — | … |
| 2001:5f1::/32 | — | reserved | — | … |
| 2001:5f2::/31 | — | reserved | — | … |
| 2001:5f4::/30 | — | reserved | — | … |
| 2001:5f9::/32 | — | reserved | — | … |
| 2001:5fa::/31 | — | reserved | — | … |
| 2001:5fc::/30 | — | reserved | — | … |
| 2001:1801::/32 | — | reserved | — | … |
| 2001:1802::/31 | — | reserved | — | … |
| 2001:1804::/30 | — | reserved | — | … |
| 2001:1809::/32 | — | reserved | — | … |
| 2001:180a::/31 | — | reserved | — | … |
| 2001:180c::/30 | — | reserved | — | … |
| 2001:1811::/32 | — | reserved | — | … |
| 2001:1812::/31 | — | reserved | — | … |
| 2001:1814::/30 | — | reserved | — | … |
| 2001:1819::/32 | — | reserved | — | … |
| 2001:181a::/31 | — | reserved | — | … |
| 2001:181c::/30 | — | reserved | — | … |
| 2001:1821::/32 | — | reserved | — | … |
| 2001:1822::/31 | — | reserved | — | … |
| 2001:1824::/30 | — | reserved | — | … |
| 2001:1829::/32 | — | reserved | — | … |
| 2001:182a::/31 | — | reserved | — | … |
| 2001:182c::/30 | — | reserved | — | … |
| 2001:1831::/32 | — | reserved | — | … |
| 2001:1832::/31 | — | reserved | — | … |
| 2001:1834::/30 | — | reserved | — | … |
| 2001:1839::/32 | — | reserved | — | … |
| 2001:183a::/31 | — | reserved | — | … |
| 2001:183c::/30 | — | reserved | — | … |
| 2001:1841::/32 | — | reserved | — | … |
| 2001:1842::/31 | — | reserved | — | … |
| 2001:1844::/30 | — | reserved | — | … |
| 2001:1849::/32 | — | reserved | — | … |