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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 23701 to 23750 of 26277
PrefixAddressesRegistryCountryAllocated
2620:11d:8000::/4016.8M × /64ARINUS23rd Dec 2014
2620:11d:a000::/441M × /64ARINUS5th Jan 2015
2620:11d:b000::/4016.8M × /64ARINUS13th Jan 2015
2620:11d:c000::/441M × /64ARINUS13th Jan 2015
2620:11d:e000::/4016.8M × /64ARINUS20th Jan 2015
2620:11e:1000::/441M × /64ARINUS6th Feb 2015
2620:11e:2000::/4016.8M × /64ARINUS9th Feb 2015
2620:11e:3000::/4016.8M × /64ARINUS12th Feb 2015
2620:11e:4000::/4016.8M × /64ARINUS12th Feb 2015
2620:11e:5000::/4016.8M × /64ARINUS18th Feb 2015
2620:11e:6000::/441M × /64ARINUS24th Feb 2015
2620:11e:7000::/4016.8M × /64ARINUS6th Mar 2015
2620:11e:8000::/4016.8M × /64ARINUS6th Mar 2015
2620:11e:9000::/441M × /64ARINUS6th Mar 2015
2620:11e:a000::/441M × /64ARINUS17th Mar 2015
2620:11e:b000::/4016.8M × /64ARINUS19th Mar 2015
2620:11e:e000::/441M × /64ARINUS30th Mar 2015
2620:11f:2000::/441M × /64ARINUS6th Apr 2015
2620:11f:3000::/4016.8M × /64ARINUS8th Apr 2015
2620:11f:6000::/4016.8M × /64ARINUS16th Apr 2015
2620:11f::/441M × /64ARINUS2nd Apr 2015
2620:11f:a000::/441M × /64ARINUS5th May 2015
2620:11f:b000::/441M × /64ARINUS5th May 2015
2620:11f:c000::/4016.8M × /64ARINUS6th May 2015
2620:120:1000::/4016.8M × /64ARINUS13th May 2015
2620:120:3000::/4016.8M × /64ARINUS13th May 2015
2620:120:4000::/4016.8M × /64ARINUS14th May 2015
2620:120:5000::/4016.8M × /64ARINUS18th May 2015
2620:120:6000::/4016.8M × /64ARINUS27th May 2015
2620:120:7000::/4016.8M × /64ARINUS4th Jun 2015
2620:120::/4016.8M × /64ARINUS8th May 2015
2620:120:a000::/4016.8M × /64ARINUS10th Jun 2015
2620:120:b000::/4016.8M × /64ARINUS22nd Jun 2015
2620:120:d000::/441M × /64ARINUS24th Jun 2015
2620:121:1000::/441M × /64ARINUS30th Jun 2015
2620:121:2000::/441M × /64ARINUS1st Jul 2015
2620:121:3000::/4016.8M × /64ARINUS8th Jul 2015
2620:121:4000::/4016.8M × /64ARINUS14th Jul 2015
2620:121:8000::/441M × /64ARINUS23rd Jul 2015
2620:121:b000::/4016.8M × /64ARINUS27th Jul 2015
2620:121:c000::/4016.8M × /64ARINUS27th Jul 2015
2620:121:e000::/441M × /64ARINUS30th Jul 2015
2620:121:f000::/441M × /64ARINUS5th Aug 2015
2620:122:1000::/4016.8M × /64ARINUS19th Aug 2015
2620:122:3000::/4016.8M × /64ARINUS26th Aug 2015
2620:122:7000::/4016.8M × /64ARINUS2nd Sept 2015
2620:122:8000::/441M × /64ARINUS17th Sept 2015
2620:122:9000::/441M × /64ARINUS22nd Sept 2015
2620:122:b000::/441M × /64ARINUS28th Sept 2015
2620:122:c000::/4016.8M × /64ARINUS1st Oct 2015