SUBNET.IM

Allocated but unannounced space

Every block here was allocated or assigned by a regional internet registry, and none of them appeared in any routing table we collected at our last snapshot — neither as a route of their own, nor covered by a larger announcement, nor carved up into more specifics.

“Unannounced” does not mean “unused”

Plenty of allocated space is deliberately kept off the public internet: private interconnects, lab and lawful-intercept ranges, networks reachable only inside one operator, and space held in reserve. Some of it is announced somewhere our collectors cannot see, which is a limit of our vantage points rather than a fact about the block.

It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today. Nothing on this page means a block is unallocated, available, or free to announce.

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Countries with the most unannounced blocks, largest first.

Unannounced blocks in Brazil

1,567 blocks match, ordered by prefix.

Allocated but unannounced blocks, 1551 to 1567 of 1567
PrefixAddressesRegistryCountryAllocated
45.227.206.0/24256LACNICBR29th Nov 2017
45.228.212.0/221kLACNICBR20th Dec 2017
45.230.52.0/221kLACNICBR29th Jan 2018
45.233.238.0/23512LACNICBR29th Mar 2018
45.235.126.0/23512LACNICBR25th Apr 2018
45.236.56.0/221kLACNICBR14th May 2018
45.236.60.0/221kLACNICBR9th May 2018
45.237.204.0/221kLACNICBR7th Jun 2018
45.239.106.0/24256LACNICBR29th Aug 2018
45.6.242.0/23512LACNICBR4th May 2017
45.6.52.0/221kLACNICBR28th Mar 2017
45.68.112.0/24256LACNICBR3rd Dec 2025
45.68.72.0/221kLACNICBR25th Jun 2024
45.68.76.0/221kLACNICBR25th Jun 2024
45.68.80.0/221kLACNICBR25th Jun 2024
45.68.84.0/221kLACNICBR25th Jun 2024
45.68.92.0/23512LACNICBR6th Nov 2024