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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

2,663 blocks match, ordered by prefix.

Allocated but unannounced blocks, 1551 to 1600 of 2663
PrefixAddressesRegistryCountryAllocated
2a01:b720::/324.3B × /64RIPE NCCGB26th Mar 2014
2a01:b820::/324.3B × /64RIPE NCCGB27th Mar 2014
2a01:b980::/324.3B × /64RIPE NCCGB6th Jul 2011
2a01:ba20::/324.3B × /64RIPE NCCGB28th Mar 2014
2a01:bde0::/324.3B × /64RIPE NCCGB4th Apr 2014
2a01:bea0::/324.3B × /64RIPE NCCGB7th Apr 2014
2a01:e200::/2934.4B × /64RIPE NCCGB30th Jul 2024
2a01:e980::/2934.4B × /64RIPE NCCGB23rd Aug 2024
2a02:1340::/324.3B × /64RIPE NCCGB12th May 2010
2a02:1658::/324.3B × /64RIPE NCCGB1st Jun 2010
2a02:1700::/324.3B × /64RIPE NCCGB11th Jun 2010
2a02:1788::/324.3B × /64RIPE NCCGB18th Jun 2010
2a02:17f0::/324.3B × /64RIPE NCCGB24th Jun 2010
2a02:2080::/324.3B × /64RIPE NCCGB1st Jul 2010
2a02:20c0::/324.3B × /64RIPE NCCGB8th Jul 2010
2a02:2300::/324.3B × /64RIPE NCCGB24th Aug 2010
2a02:2458::/324.3B × /64RIPE NCCGB17th Sept 2010
2a02:27c0::/324.3B × /64RIPE NCCGB27th Oct 2010
2a02:28c8::/324.3B × /64RIPE NCCGB8th Nov 2010
2a02:2990::/324.3B × /64RIPE NCCGB16th Nov 2010
2a02:29c8::/324.3B × /64RIPE NCCGB17th Nov 2010
2a02:2b0::/324.3B × /64RIPE NCCGB17th Apr 2008
2a02:308::/2934.4B × /64RIPE NCCGB24th Apr 2008
2a02:338::/324.3B × /64RIPE NCCGB8th May 2008
2a02:4340::/324.3B × /64RIPE NCCGB17th Sept 2012
2a02:43e0::/324.3B × /64RIPE NCCGB16th Apr 2014
2a02:48c0::/324.3B × /64RIPE NCCGB18th Sept 2012
2a02:4aa0::/324.3B × /64RIPE NCCGB25th Apr 2014
2a02:4b40::/324.3B × /64RIPE NCCGB18th Sept 2012
2a02:4c20::/324.3B × /64RIPE NCCGB25th Apr 2014
2a02:4c40::/2934.4B × /64RIPE NCCGB18th Sept 2012
2a02:4f20::/324.3B × /64RIPE NCCGB29th Apr 2014
2a02:5020::/324.3B × /64RIPE NCCGB29th Apr 2014
2a02:55c0::/324.3B × /64RIPE NCCGB19th Sept 2012
2a02:56e0::/324.3B × /64RIPE NCCGB8th May 2014
2a02:5780::/324.3B × /64RIPE NCCGB15th Jul 2011
2a02:5860::/324.3B × /64RIPE NCCGB9th May 2014
2a02:59a0::/324.3B × /64RIPE NCCGB12th May 2014
2a02:5ba0::/324.3B × /64RIPE NCCGB13th May 2014
2a02:5ce0::/324.3B × /64RIPE NCCGB14th May 2014
2a02:5d80::/2934.4B × /64RIPE NCCGB18th Jul 2011
2a02:5e40::/324.3B × /64RIPE NCCGB21st Sept 2012
2a02:658::/324.3B × /64RIPE NCCGB30th Jul 2008
2a02:66c0::/324.3B × /64RIPE NCCGB25th Sept 2012
2a02:6960::/324.3B × /64RIPE NCCGB28th May 2014
2a02:6b00::/324.3B × /64RIPE NCCGB21st Mar 2011
2a02:6d20::/324.3B × /64RIPE NCCGB3rd Jun 2014
2a02:6fc0::/324.3B × /64RIPE NCCGB26th Sept 2012
2a02:7080::/324.3B × /64RIPE NCCGB29th Jul 2011
2a02:7140::/324.3B × /64RIPE NCCGB27th Sept 2012