Longest Match / Organisations

Registered organisation

Optus Internet Pty Ltd

Address space registered to Optus Internet Pty Ltd, and where it is announced from.

Registered holders come from the bulk whois that RIPE, APNIC and AFRINIC publish. ARIN and LACNIC do not publish theirs, so space held in North and South America is largely unattributed here.

IPv4 addresses
5,406,720
IPv6 /64s
4,294,967,296
Registered blocks
27
Countries
1

What this tells you

  • Holds 5,406,720 IPv4 addresses and 4,294,967,296 IPv6 /64 networks across 27 registered blocks.
  • Announced by 2 networks, the largest being AS4804 Optus (Microplex PTY LTD) at 96% of the IPv4 space.
  • All of the space we can place resolves to Australia.

Networks announcing this space

Space announced by a network covers 100% of this holder's IPv4 space and 100% of its IPv6 space. The table below divides that space.

NetworkIPv4 shareIPv6 share
AS4804 Optus (Microplex PTY LTD)96%50%
AS9623 @Home Network Australia Routing Domain4%50%

Countries this space resolves to

Space we can place in a country covers 100% of this holder's IPv4 space and 100% of its IPv6 space. The table below divides that space.

CountryIPv4 shareIPv6 share
Australia100%100%

Holding a block is a registry fact, not a physical one. The organisation named here is who the block is assigned to, which is often a customer of the network operator announcing it.

Every figure on this page is also JSON: /api/v2/directory/org/optus-internet-pty-ltd. Breakdowns paginate from there, so a table showing the largest rows here returns all of them. Read the API.