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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

85,356 blocks match, ordered by prefix.

Allocated but unannounced blocks, 37751 to 37800 of 85356
PrefixAddressesRegistryCountryAllocated
2001:df0:41b::/4865.5k × /64APNICNZ17th Oct 2012
2001:df0:41c0::/4865.5k × /64APNICBD31st Dec 2021
2001:df0:41c::/4865.5k × /64APNICAU18th Oct 2012
2001:df0:41d::/4865.5k × /64APNICID18th Oct 2012
2001:df0:41e::/4865.5k × /64APNICID18th Oct 2012
2001:df0:4200::/4865.5k × /64APNICAU8th Jan 2016
2001:df0:420::/4865.5k × /64APNICSG7th Nov 2012
2001:df0:422::/4865.5k × /64APNICIN12th Nov 2012
2001:df0:423::/4865.5k × /64APNICCN13th Nov 2012
2001:df0:425::/4865.5k × /64APNICSG20th Nov 2012
2001:df0:426::/4865.5k × /64APNICID22nd Nov 2012
2001:df0:42::/4865.5k × /64APNICAU1st Oct 2008
2001:df0:42c0::/4865.5k × /64APNICBD31st Dec 2021
2001:df0:4300::/4865.5k × /64APNICIN6th Feb 2017
2001:df0:4340::/4865.5k × /64APNICIN31st Dec 2021
2001:df0:4380::/4865.5k × /64APNICNP29th Apr 2019
2001:df0:441::/4865.5k × /64APNICAU4th Dec 2012
2001:df0:442::/47131k × /64APNICHK5th Dec 2012
2001:df0:444::/4865.5k × /64APNICIN7th Dec 2012
2001:df0:445::/4865.5k × /64APNICIN10th Dec 2012
2001:df0:446::/4865.5k × /64APNICID13th Dec 2012
2001:df0:448::/4865.5k × /64APNICID20th Dec 2012
2001:df0:449::/4865.5k × /64APNICJP20th Dec 2012
2001:df0:44::/4865.5k × /64APNICHK27th Oct 2008
2001:df0:44a::/4865.5k × /64APNICID27th Dec 2012
2001:df0:44b::/4865.5k × /64APNICMY27th Dec 2012
2001:df0:44c::/4865.5k × /64APNICIN28th Dec 2012
2001:df0:44d::/4865.5k × /64APNICIN28th Dec 2012
2001:df0:44e::/4865.5k × /64APNICID28th Dec 2012
2001:df0:44f::/4865.5k × /64APNICSG31st Dec 2012
2001:df0:450::/4865.5k × /64APNICIN31st Dec 2012
2001:df0:452::/4865.5k × /64APNICHK3rd Jan 2013
2001:df0:453::/4865.5k × /64APNICIN7th Jan 2013
2001:df0:454::/4865.5k × /64APNICSG9th Jan 2013
2001:df0:457::/4865.5k × /64APNICMY11th Jan 2013
2001:df0:45a::/4865.5k × /64APNICIN17th Jan 2013
2001:df0:45c0::/4865.5k × /64APNICAU6th Jan 2022
2001:df0:45c::/4865.5k × /64APNICIN22nd Jan 2013
2001:df0:460::/4865.5k × /64APNICAU24th Jan 2013
2001:df0:464::/4865.5k × /64APNICMY31st Jan 2013
2001:df0:465::/4865.5k × /64APNICHK31st Jan 2013
2001:df0:4680::/4865.5k × /64APNICID29th Apr 2019
2001:df0:46a::/4865.5k × /64APNICID11th Feb 2013
2001:df0:46b::/4865.5k × /64APNICMY11th Feb 2013
2001:df0:46c::/4865.5k × /64APNICID11th Feb 2013
2001:df0:4700::/4865.5k × /64APNICIN7th Feb 2017
2001:df0:4740::/4865.5k × /64APNICIN6th Jan 2022
2001:df0:4800::/4865.5k × /64APNICHK18th Nov 2013
2001:df0:4880::/4865.5k × /64APNICID30th Apr 2019
2001:df0:48::/4865.5k × /64APNICID9th Apr 2009