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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

2,628 blocks match, ordered by prefix.

Allocated but unannounced blocks, 1651 to 1700 of 2628
PrefixAddressesRegistryCountryAllocated
2a03:64a0::/324.3B × /64RIPE NCCGB16th Dec 2014
2a03:67a0::/324.3B × /64RIPE NCCGB23rd Dec 2014
2a03:67c0::/324.3B × /64RIPE NCCGB21st Nov 2012
2a03:6c60::/324.3B × /64RIPE NCCGB8th Jan 2015
2a03:6ce0::/324.3B × /64RIPE NCCGB12th Jan 2015
2a03:7040::/324.3B × /64RIPE NCCGB27th Nov 2012
2a03:72c0::/324.3B × /64RIPE NCCGB28th Nov 2012
2a03:72e0::/324.3B × /64RIPE NCCGB1st Oct 2015
2a03:7600::/324.3B × /64RIPE NCCGB2nd Oct 2015
2a03:76a0::/324.3B × /64RIPE NCCGB2nd Feb 2015
2a03:76c0::/324.3B × /64RIPE NCCGB29th Nov 2012
2a03:7e00::/324.3B × /64RIPE NCCGB7th Feb 2011
2a03:80e0::/324.3B × /64RIPE NCCGB19th Feb 2015
2a03:8140::/324.3B × /64RIPE NCCGB4th Dec 2012
2a03:8200::/324.3B × /64RIPE NCCGB7th Feb 2011
2a03:8680::/324.3B × /64RIPE NCCGB5th Oct 2011
2a03:86a0::/324.3B × /64RIPE NCCGB4th Mar 2015
2a03:8a20::/324.3B × /64RIPE NCCGB16th Mar 2015
2a03:8a60::/324.3B × /64RIPE NCCGB16th Mar 2015
2a03:8aa0::/324.3B × /64RIPE NCCGB17th Mar 2015
2a03:8ac0::/324.3B × /64RIPE NCCGB14th Oct 2015
2a03:8e00::/324.3B × /64RIPE NCCGB7th Feb 2011
2a03:9040::/324.3B × /64RIPE NCCGB7th Dec 2012
2a03:9280::/324.3B × /64RIPE NCCGB10th Oct 2011
2a03:9600::/324.3B × /64RIPE NCCGB7th Feb 2011
2a03:9dc0::/324.3B × /64RIPE NCCGB13th Dec 2012
2a03:9e80::/324.3B × /64RIPE NCCGB12th Oct 2011
2a03:a0c0::/324.3B × /64RIPE NCCGB14th Dec 2012
2a03:a4c0::/324.3B × /64RIPE NCCGB18th Dec 2012
2a03:a5e0::/324.3B × /64RIPE NCCGB8th Feb 2016
2a03:a860::/324.3B × /64RIPE NCCGB3rd Mar 2016
2a03:aaa0::/2934.4B × /64RIPE NCCGB4th Apr 2016
2a03:ade0::/324.3B × /64RIPE NCCGB17th May 2016
2a03:b440::/324.3B × /64RIPE NCCGB2nd Jan 2013
2a03:b800::/324.3B × /64RIPE NCCGB20th Dec 2010
2a03:be40::/324.3B × /64RIPE NCCGB9th Jan 2013
2a03:c640::/324.3B × /64RIPE NCCGB11th Jan 2013
2a03:d2c0::/3017.2B × /64RIPE NCCGB1st Oct 2018
2a03:d880::/2934.4B × /64RIPE NCCGB4th Nov 2011
2a03:e000::/324.3B × /64RIPE NCCGB3rd Dec 2010
2a03:e240::/324.3B × /64RIPE NCCGB24th Jan 2013
2a03:eac0::/324.3B × /64RIPE NCCGB29th Jan 2013
2a03:f2c0::/324.3B × /64RIPE NCCGB5th Feb 2013
2a03:f540::/324.3B × /64RIPE NCCGB7th Feb 2013
2a03:fb00::/324.3B × /64RIPE NCCGB20th Apr 2011
2a04:1140::/3017.2B × /64RIPE NCCGB20th Feb 2013
2a04:1300::/2934.4B × /64RIPE NCCGB25th Feb 2013
2a04:1780::/2934.4B × /64RIPE NCCGB6th Mar 2013
2a04:1980::/2934.4B × /64RIPE NCCGB12th Mar 2013
2a04:1e80::/2934.4B × /64RIPE NCCGB26th Mar 2013