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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

2,050 blocks match, ordered by prefix.

Allocated but unannounced blocks, 551 to 600 of 2050
PrefixAddressesRegistryCountryAllocated
2001:67c:1860::/4865.5k × /64RIPE NCCRU18th Oct 2013
2001:67c:18ac::/4865.5k × /64RIPE NCCRU8th Nov 2013
2001:67c:19f0::/4865.5k × /64RIPE NCCRU5th Aug 2025
2001:67c:1b04::/4865.5k × /64RIPE NCCRU17th Jun 2013
2001:67c:1b48::/4865.5k × /64RIPE NCCRU23rd Jul 2026
2001:67c:1b7c::/4865.5k × /64RIPE NCCRU8th Jul 2013
2001:67c:1b80::/4865.5k × /64RIPE NCCRU8th Jul 2013
2001:67c:1c0::/4865.5k × /64RIPE NCCRU8th Nov 2023
2001:67c:2034::/4865.5k × /64RIPE NCCRU18th May 2017
2001:67c:2094::/4865.5k × /64RIPE NCCRU8th Sept 2015
2001:67c:20b0::/4865.5k × /64RIPE NCCRU15th Feb 2011
2001:67c:20c::/4865.5k × /64RIPE NCCRU19th Jul 2019
2001:67c:2108::/4865.5k × /64RIPE NCCRU1st Mar 2011
2001:67c:21c4::/4865.5k × /64RIPE NCCRU13th Feb 2017
2001:67c:2234::/4865.5k × /64RIPE NCCRU14th Mar 2024
2001:67c:2244::/4865.5k × /64RIPE NCCRU9th May 2011
2001:67c:24c8::/4865.5k × /64RIPE NCCRU5th Oct 2011
2001:67c:24d0::/4865.5k × /64RIPE NCCRU6th Oct 2011
2001:67c:2568::/4865.5k × /64RIPE NCCRU5th Jun 2026
2001:67c:2578::/4865.5k × /64RIPE NCCRU24th Mar 2019
2001:67c:25c8::/4865.5k × /64RIPE NCCRU29th Jul 2015
2001:67c:25ec::/4865.5k × /64RIPE NCCRU23rd Jul 2026
2001:67c:2624::/4865.5k × /64RIPE NCCRU23rd Oct 2023
2001:67c:263c::/4865.5k × /64RIPE NCCRU3rd Feb 2021
2001:67c:2668::/4865.5k × /64RIPE NCCRU23rd Aug 2016
2001:67c:2678::/4865.5k × /64RIPE NCCRU23rd Apr 2018
2001:67c:26a0::/4865.5k × /64RIPE NCCRU2nd Feb 2012
2001:67c:26bc::/4865.5k × /64RIPE NCCRU9th Feb 2012
2001:67c:27c8::/4865.5k × /64RIPE NCCRU27th Mar 2012
2001:67c:27f4::/4865.5k × /64RIPE NCCRU12th Sept 2019
2001:67c:290c::/4865.5k × /64RIPE NCCRU22nd Dec 2020
2001:67c:2940::/4865.5k × /64RIPE NCCRU17th Feb 2021
2001:67c:2954::/4865.5k × /64RIPE NCCRU19th Feb 2021
2001:67c:29c8::/4865.5k × /64RIPE NCCRU6th Jun 2012
2001:67c:29c::/4865.5k × /64RIPE NCCRU27th Dec 2021
2001:67c:2a48::/4865.5k × /64RIPE NCCRU9th Jul 2012
2001:67c:2a60::/4865.5k × /64RIPE NCCRU29th Sept 2015
2001:67c:2ab0::/4865.5k × /64RIPE NCCRU26th Nov 2012
2001:67c:2ac4::/4865.5k × /64RIPE NCCRU28th Nov 2012
2001:67c:2b4::/4865.5k × /64RIPE NCCRU14th Apr 2015
2001:67c:2b5c::/4865.5k × /64RIPE NCCRU11th Jun 2025
2001:67c:2b8c::/4865.5k × /64RIPE NCCRU11th Sept 2013
2001:67c:2be4::/4865.5k × /64RIPE NCCRU23rd Mar 2018
2001:67c:2c00::/4865.5k × /64RIPE NCCRU24th Oct 2014
2001:67c:2c5c::/4865.5k × /64RIPE NCCRU13th Nov 2014
2001:67c:2d94::/4865.5k × /64RIPE NCCRU23rd Jan 2015
2001:67c:2da0::/4865.5k × /64RIPE NCCRU30th Jan 2015
2001:67c:2df4::/4865.5k × /64RIPE NCCRU16th Feb 2015
2001:67c:2e00::/4865.5k × /64RIPE NCCRU19th Feb 2015
2001:67c:2e98::/4865.5k × /64RIPE NCCRU5th Oct 2015