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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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.

Browse by registry

Browse by country

Countries with the most unannounced blocks, largest first.

Unannounced blocks in Canada

3,819 blocks match, ordered by prefix.

Allocated but unannounced blocks, 3801 to 3819 of 3819
PrefixAddressesRegistryCountryAllocated
72.172.64.0/221kARINCA19th Dec 2022
72.19.12.0/221kARINCA30th Aug 2019
72.28.72.0/221kARINCA1st Sept 2006
72.28.78.0/23512ARINCA1st Sept 2006
74.112.124.0/221kARINCA20th Apr 2009
74.112.144.0/212kARINCA21st Apr 2009
74.113.68.0/221kARINCA5th May 2009
74.117.52.0/221kARINCA27th Aug 2009
74.118.100.0/221kARINCA6th Oct 2009
74.118.134.0/24256ARINCA26th Dec 2024
74.118.248.0/221kARINCA20th Oct 2009
74.119.120.0/221kARINCA31st Mar 2021
76.76.96.0/198.2kARINCA2nd May 2007
80.71.32.0/204.1kARINCA18th Sept 2018
85.8.224.0/24256RIPE NCCCA29th Jun 2026
91.209.179.0/24256RIPE NCCCA7th Nov 2019
91.230.28.0/221kRIPE NCCCA1st Jul 2011
91.242.227.0/24256RIPE NCCCA14th Oct 2021
96.45.48.0/221kARINCA3rd Oct 2025