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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

27,019 blocks match, ordered by prefix.

Allocated but unannounced blocks, 9151 to 9200 of 27019
PrefixAddressesRegistryCountryAllocated
198.133.220.0/24256ARINUS29th Apr 1993
198.133.221.0/24256ARINUS29th Apr 1993
198.133.222.0/24256ARINUS29th Apr 1993
198.133.223.0/24256ARINUS29th Apr 1993
198.133.232.0/24256ARINUS30th Apr 1993
198.133.233.0/24256ARINUS30th Apr 1993
198.133.234.0/24256ARINUS15th May 2025
198.133.235.0/24256ARINUS30th Apr 2025
198.133.236.0/24256ARINUS5th May 1993
198.133.239.0/24256ARINUS5th May 1993
198.133.240.0/24256ARINUS5th May 1993
198.133.242.0/24256ARINUS5th May 1993
198.133.243.0/24256ARINUS2nd Jul 2026
198.133.247.0/24256ARINUS5th May 1993
198.133.248.0/24256ARINUS15th Jan 2014
198.133.249.0/24256ARINUS6th May 1993
198.133.250.0/23512ARINUS6th May 1993
198.133.252.0/23512ARINUS6th May 1993
198.133.254.0/24256ARINUS6th May 1993
198.133.73.0/24256ARINUS7th Apr 1993
198.133.74.0/24256ARINUS7th Apr 1993
198.133.76.0/24256ARINUS8th Apr 1993
198.133.78.0/24256ARINUS8th Apr 1993
198.133.86.0/24256ARINUS12th Apr 1993
198.133.88.0/221kARINUS12th Apr 1993
198.133.92.0/24256ARINUS12th Apr 1993
198.133.93.0/24256ARINUS12th Apr 1993
198.133.94.0/23512ARINUS12th Apr 1993
198.133.96.0/23512ARINUS12th Apr 1993
198.133.98.0/24256ARINUS12th Apr 1993
198.133.99.0/24256ARINUS12th Apr 1993
198.134.128.0/221kARINUS3rd May 1993
198.134.132.0/24256ARINUS4th May 1993
198.134.133.0/24256ARINUS4th May 1993
198.134.134.0/24256ARINUS4th May 1993
198.134.136.0/24256ARINUS4th May 1993
198.134.137.0/24256ARINUS4th May 1993
198.134.138.0/24256ARINUS4th May 1993
198.134.139.0/24256ARINUS4th May 1993
198.134.140.0/24256ARINUS5th May 1993
198.134.141.0/24256ARINUS4th May 1993
198.134.143.0/24256ARINUS4th May 1993
198.134.147.0/24256ARINUS4th May 1993
198.134.148.0/24256ARINUS4th May 1993
198.134.149.0/24256ARINUS7th May 1993
198.134.150.0/24256ARINUS7th May 1993
198.134.160.0/24256ARINUS7th May 1993
198.134.255.0/24256ARINUS17th Jan 2014
198.134.4.0/24256ARINUS1st Apr 1993
198.134.5.0/24256ARINUS16th Jan 2014