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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

85,346 blocks match, ordered by prefix.

Allocated but unannounced blocks, 36001 to 36050 of 85346
PrefixAddressesRegistryCountryAllocated
2001:67c:13fc::/4865.5k × /64RIPE NCCRU13th May 2015
2001:67c:1424::/4865.5k × /64RIPE NCCFR31st Aug 2016
2001:67c:1428::/4865.5k × /64RIPE NCCRU7th May 2018
2001:67c:142c::/4865.5k × /64RIPE NCCDE2nd Sept 2016
2001:67c:143c::/4865.5k × /64RIPE NCCPL13th Sept 2016
2001:67c:1480::/4865.5k × /64RIPE NCCRU10th Oct 2012
2001:67c:1490::/4865.5k × /64RIPE NCCSE11th Oct 2012
2001:67c:1494::/4865.5k × /64RIPE NCCRU11th Oct 2012
2001:67c:14a8::/4865.5k × /64RIPE NCCKZ20th Nov 2015
2001:67c:14ac::/4865.5k × /64RIPE NCCRU31st Mar 2021
2001:67c:14b4::/4865.5k × /64RIPE NCCDE1st Jul 2026
2001:67c:14bc::/4865.5k × /64RIPE NCCAT17th Oct 2012
2001:67c:14c0::/4865.5k × /64RIPE NCCFI13th May 2015
2001:67c:14c4::/4865.5k × /64RIPE NCCDE17th Oct 2012
2001:67c:14d0::/4865.5k × /64RIPE NCCNO18th Oct 2012
2001:67c:14d4::/4865.5k × /64RIPE NCCAT19th Oct 2012
2001:67c:1504::/4865.5k × /64RIPE NCCBG28th Mar 2023
2001:67c:150::/4865.5k × /64RIPE NCCRU8th Apr 2015
2001:67c:1510::/4865.5k × /64RIPE NCCGB19th Mar 2013
2001:67c:1524::/4865.5k × /64RIPE NCCUA21st Mar 2013
2001:67c:1528::/4865.5k × /64RIPE NCCUA25th Mar 2013
2001:67c:1538::/4865.5k × /64RIPE NCCGB27th Mar 2013
2001:67c:1540::/4865.5k × /64RIPE NCCDE9th Aug 2016
2001:67c:154c::/4865.5k × /64RIPE NCCDE9th Feb 2017
2001:67c:1554::/4865.5k × /64RIPE NCCTR3rd Apr 2013
2001:67c:1558::/4865.5k × /64RIPE NCCTR4th Apr 2013
2001:67c:155c::/4865.5k × /64RIPE NCCPL4th Apr 2013
2001:67c:1570::/4865.5k × /64RIPE NCCCH25th Apr 2024
2001:67c:1574::/4865.5k × /64RIPE NCCRU8th Apr 2013
2001:67c:1588::/4865.5k × /64RIPE NCCUA15th May 2015
2001:67c:158::/4865.5k × /64RIPE NCCDK15th Feb 2010
2001:67c:1598::/4865.5k × /64RIPE NCCNL11th Apr 2013
2001:67c:159c::/4865.5k × /64RIPE NCCPL12th Apr 2013
2001:67c:15b4::/4865.5k × /64RIPE NCCDE18th May 2015
2001:67c:15bc::/4865.5k × /64RIPE NCCSE12th Apr 2013
2001:67c:15c4::/4865.5k × /64RIPE NCCPL13th Aug 2025
2001:67c:15cc::/4865.5k × /64RIPE NCCBG20th Oct 2023
2001:67c:15e4::/4865.5k × /64RIPE NCCUA19th Apr 2013
2001:67c:15f0::/4865.5k × /64RIPE NCCUA23rd Apr 2013
2001:67c:15f8::/4865.5k × /64RIPE NCCRU25th Apr 2013
2001:67c:15fc::/4865.5k × /64RIPE NCCSE25th Apr 2013
2001:67c:160::/4865.5k × /64RIPE NCCCH19th Feb 2010
2001:67c:1684::/4865.5k × /64RIPE NCCSI24th Oct 2012
2001:67c:1690::/4865.5k × /64RIPE NCCFR25th Oct 2012
2001:67c:1694::/4865.5k × /64RIPE NCCPL29th Oct 2012
2001:67c:1698::/4865.5k × /64RIPE NCCPL29th Oct 2012
2001:67c:169c::/4865.5k × /64RIPE NCCSE30th Oct 2012
2001:67c:16a0::/4865.5k × /64RIPE NCCDK31st Oct 2012
2001:67c:16a4::/4865.5k × /64RIPE NCCDK31st Oct 2012
2001:67c:16a8::/4865.5k × /64RIPE NCCAT31st Oct 2012