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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 1451 to 1500 of 2663
PrefixAddressesRegistryCountryAllocated
2a00:a4e0::/324.3B × /64RIPE NCCGB21st Jun 2013
2a00:a820::/324.3B × /64RIPE NCCGB26th Jun 2013
2a00:a860::/324.3B × /64RIPE NCCGB26th Jun 2013
2a00:b320::/324.3B × /64RIPE NCCGB10th Jul 2013
2a00:b5e0::/324.3B × /64RIPE NCCGB16th Jul 2013
2a00:b600::/2934.4B × /64RIPE NCCGB25th Jan 2011
2a00:ba20::/324.3B × /64RIPE NCCGB22nd Jul 2013
2a00:c060::/324.3B × /64RIPE NCCGB29th Jul 2013
2a00:c08::/324.3B × /64RIPE NCCGB26th Sept 2008
2a00:c2a0::/324.3B × /64RIPE NCCGB31st Jul 2013
2a00:c3e0::/324.3B × /64RIPE NCCGB1st Aug 2013
2a00:c400::/324.3B × /64RIPE NCCGB22nd Dec 2010
2a00:c460::/324.3B × /64RIPE NCCGB2nd Aug 2013
2a00:c520::/324.3B × /64RIPE NCCGB6th Aug 2013
2a00:c7a0::/324.3B × /64RIPE NCCGB12th Aug 2013
2a00:cc60::/324.3B × /64RIPE NCCGB16th Aug 2013
2a00:ce0::/324.3B × /64RIPE NCCGB23rd Oct 2008
2a00:ce40::/324.3B × /64RIPE NCCGB29th Mar 2012
2a00:d5e0::/324.3B × /64RIPE NCCGB27th Aug 2013
2a00:d600::/324.3B × /64RIPE NCCGB26th Jan 2011
2a00:d680::/324.3B × /64RIPE NCCGB27th May 2011
2a00:d700::/324.3B × /64RIPE NCCGB21st Feb 2011
2a00:d720::/2934.4B × /64RIPE NCCGB30th Aug 2013
2a00:d8a0::/2934.4B × /64RIPE NCCGB2nd Sept 2013
2a00:d9a0::/324.3B × /64RIPE NCCGB3rd Sept 2013
2a00:da20::/324.3B × /64RIPE NCCGB4th Sept 2013
2a00:daa0::/324.3B × /64RIPE NCCGB4th Sept 2013
2a00:db80::/324.3B × /64RIPE NCCGB30th May 2011
2a00:df20::/324.3B × /64RIPE NCCGB12th Sept 2013
2a00:e080::/2934.4B × /64RIPE NCCGB20th Apr 2026
2a00:e1a0::/324.3B × /64RIPE NCCGB16th Sept 2013
2a00:e1c0::/324.3B × /64RIPE NCCGB19th Apr 2012
2a00:e3e0::/324.3B × /64RIPE NCCGB18th Sept 2013
2a00:e4e0::/324.3B × /64RIPE NCCGB3rd Jun 2015
2a00:e620::/324.3B × /64RIPE NCCGB19th Sept 2013
2a00:e960::/324.3B × /64RIPE NCCGB24th Sept 2013
2a00:eac0::/324.3B × /64RIPE NCCGB1st May 2012
2a00:ef00::/324.3B × /64RIPE NCCGB12th Jan 2016
2a00:f0c0::/324.3B × /64RIPE NCCGB2nd May 2012
2a00:f3c0::/324.3B × /64RIPE NCCGB7th May 2012
2a00:f4e0::/324.3B × /64RIPE NCCGB7th Oct 2013
2a00:f540::/324.3B × /64RIPE NCCGB8th May 2012
2a00:f880::/324.3B × /64RIPE NCCGB1st Jun 2011
2a00:f8a0::/324.3B × /64RIPE NCCGB11th Oct 2013
2a00:fce0::/324.3B × /64RIPE NCCGB17th Oct 2013
2a00:fd0::/324.3B × /64RIPE NCCGB11th Dec 2008
2a00:fd60::/324.3B × /64RIPE NCCGB18th Oct 2013
2a00:ff60::/324.3B × /64RIPE NCCGB21st Oct 2013
2a00:ffe0::/324.3B × /64RIPE NCCGB21st Oct 2013
2a01:140::/2934.4B × /64RIPE NCCGB27th Jun 2006