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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
ASCountryStatusAllocatedOrg handle
AS399428 reserved
AS399452 reserved
AS399465 reserved
AS399481 reserved
AS399499 reserved
AS399517 reserved
AS399546 reserved
AS399557 reserved
AS399581 reserved
AS399618 reserved
AS399645 reserved
AS399662 reserved
AS399670 reserved
AS399682 reserved
AS399683 reserved
AS399756 reserved
AS399764 reserved
AS399779 reserved
AS399787 reserved
AS399793 reserved
AS399794 reserved
AS399797 reserved
AS399836 reserved
AS399843 reserved
AS399859 reserved
AS399903 reserved
AS399964 reserved
AS399969 reserved
AS400026 reserved
AS400035 reserved
AS400050 reserved
AS400056 reserved
AS400109 reserved
AS400111 reserved
AS400118 reserved
AS400143 reserved
AS400161 reserved
AS400223 reserved
AS400246 reserved
AS400269 reserved
AS400273 reserved
AS400274 reserved
AS400295 reserved
AS400310 reserved
AS400332 reserved
AS400373 reserved
AS400495 reserved
AS400565 reserved
AS400612 reserved
AS400620 reserved
AS400710 reserved
AS400768 reserved
AS400863 reserved
AS400887 reserved
AS400898 reserved
AS400907 reserved
AS400916 reserved
AS400955 reserved
AS400968 reserved
AS400971 reserved
AS400978 reserved
AS401003 reserved
AS401011 reserved
AS401016 reserved
AS401056 reserved
AS401065 reserved
AS401066 reserved
AS401067 reserved
AS401072 reserved
AS401084 reserved
AS401098 reserved
AS401115 reserved
AS401118 reserved
AS401131 reserved
AS401142 reserved
AS401144 reserved
AS401146 reserved
AS401169 reserved
AS401179 reserved
AS401187 reserved
AS401189 reserved
AS401206 reserved
AS401218 reserved
AS401235 reserved
AS401249 reserved
AS401272 reserved
AS401289 reserved
AS401351 reserved
AS401358 reserved
AS401359 reserved
AS401367 reserved
AS401371 reserved
AS401384 reserved
AS401390 reserved
AS401407 reserved
AS401419 reserved
AS401444 reserved
AS401453 reserved
AS401477 reserved
AS401491 reserved
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