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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 1401 to 1450 of 2663
PrefixAddressesRegistryCountryAllocated
2a00:1540::/324.3B × /64RIPE NCCGB23rd Oct 2009
2a00:15d0::/324.3B × /64RIPE NCCGB3rd Nov 2009
2a00:17f8::/324.3B × /64RIPE NCCGB7th Dec 2009
2a00:1b20::/324.3B × /64RIPE NCCGB11th Feb 2010
2a00:1b98::/324.3B × /64RIPE NCCGB17th Feb 2010
2a00:1bf0::/324.3B × /64RIPE NCCGB25th Feb 2010
2a00:1d90::/324.3B × /64RIPE NCCGB15th Mar 2010
2a00:1df0::/324.3B × /64RIPE NCCGB25th Mar 2010
2a00:1ea8::/324.3B × /64RIPE NCCGB9th Apr 2010
2a00:4240::/324.3B × /64RIPE NCCGB24th Nov 2011
2a00:43a0::/324.3B × /64RIPE NCCGB19th Feb 2013
2a00:44c0::/324.3B × /64RIPE NCCGB25th Nov 2011
2a00:44e0::/324.3B × /64RIPE NCCGB20th Feb 2013
2a00:4d40::/324.3B × /64RIPE NCCGB2nd Dec 2011
2a00:5260::/324.3B × /64RIPE NCCGB7th Mar 2013
2a00:5420::/324.3B × /64RIPE NCCGB8th Mar 2013
2a00:5440::/324.3B × /64RIPE NCCGB7th Dec 2011
2a00:5a00::/324.3B × /64RIPE NCCGB18th Jan 2011
2a00:5bc0::/324.3B × /64RIPE NCCGB13th Dec 2011
2a00:62a0::/324.3B × /64RIPE NCCGB26th Mar 2013
2a00:6560::/324.3B × /64RIPE NCCGB2nd Apr 2013
2a00:67a0::/2934.4B × /64RIPE NCCGB3rd Apr 2013
2a00:6a80::/2934.4B × /64RIPE NCCGB3rd May 2011
2a00:6be0::/324.3B × /64RIPE NCCGB8th Apr 2013
2a00:6c60::/324.3B × /64RIPE NCCGB8th Apr 2013
2a00:6d00::/324.3B × /64RIPE NCCGB23rd Apr 2015
2a00:6ea0::/324.3B × /64RIPE NCCGB11th Apr 2013
2a00:7020::/324.3B × /64RIPE NCCGB11th Apr 2013
2a00:7060::/324.3B × /64RIPE NCCGB11th Apr 2013
2a00:7480::/324.3B × /64RIPE NCCGB6th May 2011
2a00:7640::/324.3B × /64RIPE NCCGB16th Jan 2012
2a00:7760::/2934.4B × /64RIPE NCCGB22nd Apr 2013
2a00:7ba0::/324.3B × /64RIPE NCCGB25th Apr 2013
2a00:81c0::/324.3B × /64RIPE NCCGB25th Jan 2012
2a00:8540::/324.3B × /64RIPE NCCGB27th Jan 2012
2a00:87e0::/324.3B × /64RIPE NCCGB16th May 2013
2a00:8940::/2934.4B × /64RIPE NCCGB31st Jan 2012
2a00:8ae0::/324.3B × /64RIPE NCCGB22nd May 2013
2a00:8fa0::/324.3B × /64RIPE NCCGB24th May 2013
2a00:8fc0::/324.3B × /64RIPE NCCGB3rd Feb 2012
2a00:92e0::/324.3B × /64RIPE NCCGB28th May 2013
2a00:9580::/324.3B × /64RIPE NCCGB16th May 2011
2a00:9ba0::/324.3B × /64RIPE NCCGB10th Jun 2013
2a00:9d60::/324.3B × /64RIPE NCCGB11th Jun 2013
2a00:9da0::/324.3B × /64RIPE NCCGB19th May 2015
2a00:9e40::/324.3B × /64RIPE NCCGB17th Feb 2012
2a00:a060::/324.3B × /64RIPE NCCGB17th Jun 2013
2a00:a1e0::/324.3B × /64RIPE NCCGB18th Jun 2013
2a00:a280::/324.3B × /64RIPE NCCGB17th May 2011
2a00:a2c0::/324.3B × /64RIPE NCCGB21st Feb 2012