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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 35601 to 35650 of 85346
PrefixAddressesRegistryCountryAllocated
2001:678:484::/4865.5k × /64RIPE NCCGB31st May 2017
2001:678:488::/4865.5k × /64RIPE NCCGB2nd Jun 2017
2001:678:48::/4865.5k × /64RIPE NCCES1st Sept 2011
2001:678:48c::/4865.5k × /64RIPE NCCRU2nd Jun 2017
2001:678:4ac::/4865.5k × /64RIPE NCCRU15th Jun 2017
2001:678:4b4::/4865.5k × /64RIPE NCCPL20th Jun 2017
2001:678:4b8::/4865.5k × /64RIPE NCCUA23rd Jun 2017
2001:678:4c4::/4865.5k × /64RIPE NCCCH6th Jul 2017
2001:678:4c8::/4865.5k × /64RIPE NCCGB30th Jun 2026
2001:678:4cc::/4865.5k × /64RIPE NCCDE10th Jul 2017
2001:678:4d0::/4865.5k × /64RIPE NCCSE12th Jul 2017
2001:678:4dc::/4865.5k × /64RIPE NCCDE25th Jul 2017
2001:678:4e0::/4865.5k × /64RIPE NCCDE25th Jul 2017
2001:678:4e4::/4865.5k × /64RIPE NCCDE25th Jul 2017
2001:678:4e8::/4865.5k × /64RIPE NCCDE25th Jul 2017
2001:678:4ec::/4865.5k × /64RIPE NCCDE25th Jul 2017
2001:678:4f0::/4865.5k × /64RIPE NCCDE25th Jul 2017
2001:678:4f8::/4865.5k × /64RIPE NCCRO25th May 2020
2001:678:4fc::/4865.5k × /64RIPE NCCFR7th Jul 2026
2001:678:500::/4865.5k × /64RIPE NCCGB1st Aug 2017
2001:678:50c::/4865.5k × /64RIPE NCCCH30th Dec 2024
2001:678:514::/4865.5k × /64RIPE NCCRO9th Jul 2025
2001:678:51c::/4865.5k × /64RIPE NCCDK30th Aug 2017
2001:678:52c::/4865.5k × /64RIPE NCCFI21st Sept 2017
2001:678:530::/4865.5k × /64RIPE NCCPL26th Sept 2017
2001:678:534::/4865.5k × /64RIPE NCCRU26th Sept 2017
2001:678:544::/4865.5k × /64RIPE NCCIE4th Oct 2017
2001:678:548::/4865.5k × /64RIPE NCCRU20th Oct 2017
2001:678:54c::/4865.5k × /64RIPE NCCSE20th Oct 2017
2001:678:550::/4865.5k × /64RIPE NCCGB23rd Oct 2017
2001:678:570::/4865.5k × /64RIPE NCCPL10th Nov 2017
2001:678:574::/4865.5k × /64RIPE NCCPL14th Nov 2017
2001:678:584::/4865.5k × /64RIPE NCCDE1st Dec 2017
2001:678:58c::/4865.5k × /64RIPE NCCIT10th Aug 2026
2001:678:590::/4865.5k × /64RIPE NCCPL5th Dec 2017
2001:678:59c::/4865.5k × /64RIPE NCCDE6th Dec 2017
2001:678:5a0::/4865.5k × /64RIPE NCCDE28th Oct 2019
2001:678:5a4::/4865.5k × /64RIPE NCCCZ8th Dec 2017
2001:678:5b8::/4865.5k × /64RIPE NCCSI16th Jan 2018
2001:678:5bc::/4865.5k × /64RIPE NCCPL16th Jan 2018
2001:678:5c8::/4865.5k × /64RIPE NCCRU18th Jan 2018
2001:678:5e8::/4865.5k × /64RIPE NCCAT12th Sept 2025
2001:678:5f0::/4865.5k × /64RIPE NCCUA21st Jan 2020
2001:678:5f4::/4865.5k × /64RIPE NCCPS6th Feb 2018
2001:678:5fc::/4865.5k × /64RIPE NCCKG8th Feb 2018
2001:678:608::/4865.5k × /64RIPE NCCPL2nd Mar 2018
2001:678:610::/4865.5k × /64RIPE NCCSE6th Mar 2018
2001:678:624::/4865.5k × /64RIPE NCCRU18th Sept 2025
2001:678:628::/4865.5k × /64RIPE NCCPL20th Mar 2018
2001:678:62c::/4865.5k × /64RIPE NCCRU21st Mar 2018