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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 1001 to 1050 of 2050
PrefixAddressesRegistryCountryAllocated
2a03:b1c0::/324.3B × /64RIPE NCCRU31st Dec 2012
2a03:b3c0::/324.3B × /64RIPE NCCRU14th Feb 2017
2a03:c440::/324.3B × /64RIPE NCCRU11th Jan 2013
2a03:c4c0::/324.3B × /64RIPE NCCRU11th Jan 2013
2a03:c700::/2934.4B × /64RIPE NCCRU15th Apr 2011
2a03:cb40::/324.3B × /64RIPE NCCRU15th Jan 2013
2a03:ccc0::/324.3B × /64RIPE NCCRU16th Jan 2013
2a03:d0c0::/324.3B × /64RIPE NCCRU18th Jan 2013
2a03:d580::/2934.4B × /64RIPE NCCRU6th May 2026
2a03:d700::/324.3B × /64RIPE NCCRU18th Apr 2011
2a03:e040::/324.3B × /64RIPE NCCRU24th Jan 2013
2a03:e20::/324.3B × /64RIPE NCCRU14th Jul 2014
2a03:e540::/324.3B × /64RIPE NCCRU25th Jan 2013
2a03:e780::/324.3B × /64RIPE NCCRU11th Nov 2011
2a03:e8c0::/324.3B × /64RIPE NCCRU29th Jan 2013
2a03:e9c0::/324.3B × /64RIPE NCCRU29th Jan 2013
2a03:eb40::/324.3B × /64RIPE NCCRU30th Jan 2013
2a03:f500::/2934.4B × /64RIPE NCCRU28th Apr 2020
2a03:f5c0::/324.3B × /64RIPE NCCRU7th Feb 2013
2a03:f700::/2934.4B × /64RIPE NCCRU20th Apr 2011
2a03:fe00::/324.3B × /64RIPE NCCRU9th Feb 2011
2a04:1f20::/3017.2B × /64RIPE NCCRU2nd Apr 2013
2a04:2240::/2934.4B × /64RIPE NCCRU22nd Jun 2015
2a04:2780::/2934.4B × /64RIPE NCCRU7th Jun 2018
2a04:2940::/2934.4B × /64RIPE NCCRU15th Apr 2013
2a04:2c80::/2934.4B × /64RIPE NCCRU19th Apr 2013
2a04:32c0::/2934.4B × /64RIPE NCCRU7th May 2013
2a04:3cc0::/2934.4B × /64RIPE NCCRU3rd Jun 2013
2a04:4140::/2934.4B × /64RIPE NCCRU18th Jun 2013
2a04:4180::/2934.4B × /64RIPE NCCRU19th Jun 2013
2a04:4980::/2934.4B × /64RIPE NCCRU8th Jul 2013
2a04:4d00::/2934.4B × /64RIPE NCCRU16th Jul 2013
2a04:5500::/2934.4B × /64RIPE NCCRU31st Jul 2013
2a04:61c0::/2934.4B × /64RIPE NCCRU31st Mar 2015
2a04:6e40::/2934.4B × /64RIPE NCCRU18th Jan 2024
2a04:7240::/2934.4B × /64RIPE NCCRU14th Oct 2013
2a04:7780::/2934.4B × /64RIPE NCCRU23rd Oct 2013
2a04:7a40::/2934.4B × /64RIPE NCCRU7th Dec 2021
2a04:7c80::/2934.4B × /64RIPE NCCRU30th Oct 2013
2a04:8583::/324.3B × /64RIPE NCCRU15th Nov 2013
2a04:8584::/3017.2B × /64RIPE NCCRU15th Nov 2013
2a04:8a00::/2934.4B × /64RIPE NCCRU22nd Nov 2013
2a04:8a40::/2934.4B × /64RIPE NCCRU22nd Nov 2013
2a04:8c00::/2934.4B × /64RIPE NCCRU28th Nov 2013
2a04:8c0::/2934.4B × /64RIPE NCCRU1st Feb 2013
2a04:8ea0::/2934.4B × /64RIPE NCCRU6th Dec 2013
2a04:9580::/2934.4B × /64RIPE NCCRU17th Dec 2013
2a04:9600::/2934.4B × /64RIPE NCCRU19th Jun 2023
2a04:99c0::/2934.4B × /64RIPE NCCRU30th Dec 2013
2a04:a5c0::/2934.4B × /64RIPE NCCRU18th Jul 2019