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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

945 blocks match, ordered by prefix.

Allocated but unannounced blocks, 401 to 450 of 945
PrefixAddressesRegistryCountryAllocated
2a03:6620::/324.3B × /64RIPE NCCIT19th Dec 2014
2a03:6a80::/2934.4B × /64RIPE NCCIT14th Oct 2021
2a03:6cc0::/324.3B × /64RIPE NCCIT26th Nov 2012
2a03:7440::/324.3B × /64RIPE NCCIT28th Nov 2012
2a03:7640::/324.3B × /64RIPE NCCIT29th Nov 2012
2a03:7fe0::/324.3B × /64RIPE NCCIT17th Feb 2015
2a03:8020::/324.3B × /64RIPE NCCIT17th Feb 2015
2a03:8660::/2934.4B × /64RIPE NCCIT3rd Mar 2015
2a03:86e0::/324.3B × /64RIPE NCCIT4th Mar 2015
2a03:8be0::/324.3B × /64RIPE NCCIT18th Mar 2015
2a03:960::/324.3B × /64RIPE NCCIT8th Jul 2014
2a03:9880::/324.3B × /64RIPE NCCIT10th Oct 2011
2a03:a20::/324.3B × /64RIPE NCCIT8th Jul 2014
2a03:a260::/324.3B × /64RIPE NCCIT21st Dec 2015
2a03:a280::/324.3B × /64RIPE NCCIT14th Oct 2011
2a03:a380::/324.3B × /64RIPE NCCIT14th Oct 2011
2a03:a3c0::/324.3B × /64RIPE NCCIT18th Dec 2012
2a03:a700::/324.3B × /64RIPE NCCIT1st Apr 2015
2a03:a7e0::/2934.4B × /64RIPE NCCIT18th Feb 2016
2a03:ad20::/2934.4B × /64RIPE NCCIT6th May 2016
2a03:aea0::/324.3B × /64RIPE NCCIT20th May 2016
2a03:afa0::/324.3B × /64RIPE NCCIT20th Jun 2016
2a03:b340::/324.3B × /64RIPE NCCIT2nd Apr 2015
2a03:c180::/324.3B × /64RIPE NCCIT27th Oct 2011
2a03:c1c0::/324.3B × /64RIPE NCCIT10th Jan 2013
2a03:cec0::/324.3B × /64RIPE NCCIT7th Apr 2015
2a03:d100::/324.3B × /64RIPE NCCIT18th Apr 2011
2a03:d40::/324.3B × /64RIPE NCCIT9th Oct 2012
2a03:d740::/324.3B × /64RIPE NCCIT21st Jan 2013
2a03:de00::/324.3B × /64RIPE NCCIT8th Feb 2011
2a03:e5c0::/324.3B × /64RIPE NCCIT8th Apr 2015
2a03:e640::/324.3B × /64RIPE NCCIT25th Jan 2013
2a03:e740::/324.3B × /64RIPE NCCIT28th Jan 2013
2a03:ef80::/324.3B × /64RIPE NCCIT15th Nov 2011
2a03:f140::/324.3B × /64RIPE NCCIT4th Feb 2013
2a04:1000::/2934.4B × /64RIPE NCCIT27th Oct 2025
2a04:1180::/2934.4B × /64RIPE NCCIT21st Feb 2013
2a04:1540::/2934.4B × /64RIPE NCCIT1st Mar 2013
2a04:39c0::/2934.4B × /64RIPE NCCIT24th May 2013
2a04:3d00::/2934.4B × /64RIPE NCCIT3rd Jun 2013
2a04:3f40::/2934.4B × /64RIPE NCCIT11th Jun 2013
2a04:4bc0::/2934.4B × /64RIPE NCCIT11th Jul 2013
2a04:4c80::/2934.4B × /64RIPE NCCIT12th Jul 2013
2a04:5000::/2934.4B × /64RIPE NCCIT10th Apr 2015
2a04:5700::/2934.4B × /64RIPE NCCIT8th Dec 2025
2a04:5880::/2934.4B × /64RIPE NCCIT9th Aug 2013
2a04:5c00::/2934.4B × /64RIPE NCCIT21st Aug 2013
2a04:6880::/2934.4B × /64RIPE NCCIT24th Sept 2013
2a04:6fc0::/2934.4B × /64RIPE NCCIT12th May 2025
2a04:740::/2934.4B × /64RIPE NCCIT29th Jan 2013