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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through RIPE NCC, largest first.

Unannounced blocks in United States

599 blocks match, ordered by prefix.

Allocated but unannounced blocks, 251 to 300 of 599
PrefixAddressesRegistryCountryAllocated
2a00:4ee0::/324.3B × /64RIPE NCCUS16th Apr 2015
2a00:5e00::/324.3B × /64RIPE NCCUS18th Jan 2011
2a00:9180::/324.3B × /64RIPE NCCUS13th May 2011
2a00:95c0::/2934.4B × /64RIPE NCCUS8th Feb 2012
2a00:9600::/324.3B × /64RIPE NCCUS24th Jan 2011
2a00:9820::/324.3B × /64RIPE NCCUS4th Jun 2013
2a00:a2e0::/324.3B × /64RIPE NCCUS19th Jun 2013
2a00:af40::/324.3B × /64RIPE NCCUS1st Mar 2012
2a00:b040::/324.3B × /64RIPE NCCUS2nd Mar 2012
2a00:cca0::/324.3B × /64RIPE NCCUS19th Aug 2013
2a00:d1e0::/324.3B × /64RIPE NCCUS26th Aug 2013
2a00:e8a0::/324.3B × /64RIPE NCCUS23rd Sept 2013
2a01:5a80::/324.3B × /64RIPE NCCUS10th Jun 2011
2a01:62e0::/324.3B × /64RIPE NCCUS6th Dec 2013
2a01:7380::/324.3B × /64RIPE NCCUS20th Jun 2011
2a01:75e0::/324.3B × /64RIPE NCCUS7th Jan 2014
2a01:8680::/324.3B × /64RIPE NCCUS23rd Jun 2011
2a01:8720::/324.3B × /64RIPE NCCUS31st Jan 2014
2a01:8e60::/324.3B × /64RIPE NCCUS10th Feb 2014
2a01:91c0::/324.3B × /64RIPE NCCUS19th Jul 2012
2a01:98::/324.3B × /64RIPE NCCUS31st Mar 2006
2a01:a9e0::/2934.4B × /64RIPE NCCUS12th Mar 2014
2a01:bf60::/324.3B × /64RIPE NCCUS8th Apr 2014
2a01:e100::/2934.4B × /64RIPE NCCUS7th Aug 2024
2a02:3d0::/324.3B × /64RIPE NCCUS22nd May 2008
2a02:51e0::/324.3B × /64RIPE NCCUS1st May 2014
2a02:74e0::/324.3B × /64RIPE NCCUS12th Jun 2014
2a02:de8::/324.3B × /64RIPE NCCUS4th May 2009
2a03:1820::/324.3B × /64RIPE NCCUS25th Jul 2014
2a03:2840::/324.3B × /64RIPE NCCUS22nd Oct 2012
2a03:3a0::/324.3B × /64RIPE NCCUS1st Jul 2014
2a03:4180::/2934.4B × /64RIPE NCCUS25th Aug 2015
2a03:460::/324.3B × /64RIPE NCCUS1st Jul 2014
2a03:4d60::/324.3B × /64RIPE NCCUS31st Oct 2014
2a03:79e0::/324.3B × /64RIPE NCCUS10th Feb 2015
2a03:82a0::/324.3B × /64RIPE NCCUS23rd Feb 2015
2a03:ae00::/324.3B × /64RIPE NCCUS15th Feb 2016
2a03:d040::/324.3B × /64RIPE NCCUS17th Jan 2013
2a03:de80::/324.3B × /64RIPE NCCUS8th Nov 2011
2a04:28c0::/2934.4B × /64RIPE NCCUS15th Apr 2013
2a04:480::/2934.4B × /64RIPE NCCUS24th Jan 2013
2a04:4840::/2934.4B × /64RIPE NCCUS3rd Jul 2013
2a04:5840::/2934.4B × /64RIPE NCCUS8th Aug 2013
2a04:58c0::/2934.4B × /64RIPE NCCUS7th Dec 2021
2a04:8800::/2934.4B × /64RIPE NCCUS11th Jun 2018
2a04:9200::/2934.4B × /64RIPE NCCUS9th Dec 2013
2a04:9d00::/2934.4B × /64RIPE NCCUS7th May 2020
2a04:a780::/2934.4B × /64RIPE NCCUS12th Jun 2018
2a04:ac80::/2934.4B × /64RIPE NCCUS5th Feb 2014
2a04:dd80::/2934.4B × /64RIPE NCCUS12th Jun 2018