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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through ARIN, largest first.

Unannounced blocks in United States

26,277 blocks match, ordered by prefix.

Allocated but unannounced blocks, 23551 to 23600 of 26277
PrefixAddressesRegistryCountryAllocated
2620:10c:3000::/441M × /64ARINUS16th Apr 2012
2620:10c:4000::/441M × /64ARINUS19th Apr 2012
2620:10c:5000::/441M × /64ARINUS23rd Apr 2012
2620:10c:9000::/4016.8M × /64ARINUS30th Apr 2012
2620:10c::/441M × /64ARINUS9th Apr 2012
2620:10c:a000::/441M × /64ARINUS7th May 2012
2620:10c:b000::/4016.8M × /64ARINUS7th May 2012
2620:10c:c000::/4016.8M × /64ARINUS11th May 2012
2620:10c:d000::/441M × /64ARINUS14th May 2012
2620:10d:3000::/441M × /64ARINUS24th May 2012
2620:10d:5000::/4016.8M × /64ARINUS29th May 2012
2620:10d:7000::/4016.8M × /64ARINUS6th Jun 2012
2620:10d:8000::/441M × /64ARINUS7th Jun 2012
2620:10d:a000::/4016.8M × /64ARINUS11th Jun 2012
2620:10d:b000::/4016.8M × /64ARINUS11th Jun 2012
2620:10e:1000::/441M × /64ARINUS18th Jun 2012
2620:10e:2000::/441M × /64ARINUS21st Jun 2012
2620:10e:3000::/4016.8M × /64ARINUS25th Jun 2012
2620:10e:4000::/4016.8M × /64ARINUS26th Jun 2012
2620:10e:5000::/441M × /64ARINUS28th Jun 2012
2620:10e:7000::/4016.8M × /64ARINUS2nd Jul 2012
2620:10e:8000::/4016.8M × /64ARINUS5th Jul 2012
2620:10e:9000::/441M × /64ARINUS6th Jul 2012
2620:10e::/441M × /64ARINUS18th Jun 2012
2620:10e:a000::/441M × /64ARINUS10th Jul 2012
2620:10e:b000::/4016.8M × /64ARINUS12th Jul 2012
2620:10e:c000::/441M × /64ARINUS13th Jul 2012
2620:10e:e000::/441M × /64ARINUS19th Jul 2012
2620:10e:f000::/441M × /64ARINUS20th Jul 2012
2620:10f:1000::/441M × /64ARINUS26th Jul 2012
2620:10f:2000::/441M × /64ARINUS26th Jul 2012
2620:10f:5000::/4016.8M × /64ARINUS2nd Aug 2012
2620:10f:7000::/441M × /64ARINUS3rd Aug 2012
2620:10f:8000::/4016.8M × /64ARINUS6th Aug 2012
2620:10f:9000::/441M × /64ARINUS8th Aug 2012
2620:10f::/441M × /64ARINUS25th Jul 2012
2620:10f:e000::/4016.8M × /64ARINUS21st Aug 2012
2620:10f:f000::/441M × /64ARINUS22nd Aug 2012
2620:110:1000::/441M × /64ARINUS24th Aug 2012
2620:110:2000::/4016.8M × /64ARINUS28th Aug 2012
2620:110:3000::/4016.8M × /64ARINUS30th Aug 2012
2620:110:6000::/441M × /64ARINUS11th Sept 2012
2620:110:7000::/441M × /64ARINUS11th Sept 2012
2620:110:8000::/4016.8M × /64ARINUS12th Sept 2012
2620:110:9000::/441M × /64ARINUS26th Sept 2012
2620:110:a000::/441M × /64ARINUS27th Sept 2012
2620:111:1000::/4016.8M × /64ARINUS8th Oct 2012
2620:111:2000::/441M × /64ARINUS9th Oct 2012
2620:111:3000::/441M × /64ARINUS12th Oct 2012
2620:111:5000::/441M × /64ARINUS18th Oct 2012