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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

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Countries with unannounced space registered through RIPE NCC, largest first.

Unannounced blocks in Russia

2,050 blocks match, ordered by prefix.

Allocated but unannounced blocks, 1951 to 2000 of 2050
PrefixAddressesRegistryCountryAllocated
91.222.156.0/221kRIPE NCCRU22nd Dec 2010
91.223.138.0/24256RIPE NCCRU17th Feb 2011
91.223.15.0/24256RIPE NCCRU18th Jan 2011
91.223.181.0/24256RIPE NCCRU2nd Mar 2011
91.223.239.0/24256RIPE NCCRU17th Mar 2011
91.223.251.0/24256RIPE NCCRU21st Mar 2011
91.223.252.0/24256RIPE NCCRU21st Mar 2011
91.224.132.0/23512RIPE NCCRU14th Feb 2011
91.224.34.0/23512RIPE NCCRU26th Jan 2011
91.225.127.0/24256RIPE NCCRU9th Feb 2011
91.227.149.0/24256RIPE NCCRU16th May 2011
91.227.198.0/24256RIPE NCCRU17th May 2011
91.227.228.0/24256RIPE NCCRU18th May 2011
91.227.79.0/25128RIPE NCCRU9th May 2011
91.227.79.128/25128RIPE NCCRU15th Sept 2011
91.227.8.0/221kRIPE NCCRU2nd May 2011
91.228.177.0/24256RIPE NCCRU6th Jun 2011
91.228.184.0/24256RIPE NCCRU6th Jun 2011
91.228.226.0/24256RIPE NCCRU8th Jun 2011
91.229.2.0/24256RIPE NCCRU10th Jun 2011
91.229.211.0/24256RIPE NCCRU27th Jun 2011
91.229.96.0/221kRIPE NCCRU17th Jun 2011
91.230.228.0/23512RIPE NCCRU3rd Oct 2019
91.231.114.0/23512RIPE NCCRU21st Sept 2011
91.231.145.0/24256RIPE NCCRU7th May 2025
91.231.180.0/24256RIPE NCCRU8th Jul 2021
91.231.64.0/23512RIPE NCCRU13th Sept 2011
91.232.244.0/23512RIPE NCCRU25th Nov 2011
91.232.80.0/24256RIPE NCCRU2nd Nov 2011
91.233.132.0/221kRIPE NCCRU9th Dec 2011
91.233.212.0/24256RIPE NCCRU30th Jul 2012
91.234.178.0/24256RIPE NCCRU26th Jan 2012
91.234.224.0/23512RIPE NCCRU30th Jan 2012
91.234.99.0/24256RIPE NCCRU30th Dec 2011
91.235.156.0/23512RIPE NCCRU14th Feb 2012
91.236.104.0/24256RIPE NCCRU11th Nov 2019
91.236.115.0/24256RIPE NCCRU11th Nov 2019
91.236.213.0/24256RIPE NCCRU11th Nov 2019
91.237.163.0/24256RIPE NCCRU27th Mar 2012
91.237.188.0/23512RIPE NCCRU29th Mar 2012
91.237.20.0/24256RIPE NCCRU19th Mar 2012
91.237.53.0/24256RIPE NCCRU11th Nov 2019
91.237.76.0/24256RIPE NCCRU21st Mar 2012
91.237.97.0/24256RIPE NCCRU23rd Mar 2012
91.238.252.0/23512RIPE NCCRU27th Apr 2012
91.238.79.0/24256RIPE NCCRU10th Apr 2012
91.238.97.0/24256RIPE NCCRU11th Apr 2012
91.239.215.0/24256RIPE NCCRU25th May 2012
91.240.225.0/24256RIPE NCCRU6th Jul 2012
91.241.16.0/24256RIPE NCCRU11th Jul 2012