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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 23951 to 24000 of 26277
PrefixAddressesRegistryCountryAllocated
2620:13b:9000::/4016.8M × /64ARINUS28th Sept 2018
2620:13b:c000::/441M × /64ARINUS5th Oct 2018
2620:13b:f000::/4016.8M × /64ARINUS9th Oct 2018
2620:13c:2000::/441M × /64ARINUS15th Oct 2018
2620:13c:3000::/441M × /64ARINUS19th Oct 2018
2620:13c:4000::/4016.8M × /64ARINUS24th Oct 2018
2620:13c:5000::/441M × /64ARINUS24th Oct 2018
2620:13c:6000::/4016.8M × /64ARINUS30th Oct 2018
2620:13c:7000::/441M × /64ARINUS6th Nov 2018
2620:13c:9000::/4016.8M × /64ARINUS14th Nov 2018
2620:13c::/4016.8M × /64ARINUS11th Oct 2018
2620:13c:a000::/4016.8M × /64ARINUS21st Nov 2018
2620:13c:c000::/441M × /64ARINUS14th Dec 2018
2620:13c:d000::/441M × /64ARINUS17th Dec 2018
2620:13c:f000::/4016.8M × /64ARINUS17th Dec 2018
2620:13d:1000::/4016.8M × /64ARINUS19th Dec 2018
2620:13d:3000::/441M × /64ARINUS2nd Jan 2019
2620:13d:5000::/441M × /64ARINUS9th Jan 2019
2620:13d:6000::/441M × /64ARINUS10th Jan 2019
2620:13d:7000::/4016.8M × /64ARINUS10th Jan 2019
2620:13d:8000::/441M × /64ARINUS22nd Jan 2019
2620:13d:9000::/441M × /64ARINUS23rd Jan 2019
2620:13d:b000::/4016.8M × /64ARINUS29th Jan 2019
2620:13e:1000::/441M × /64ARINUS20th Feb 2019
2620:13e:2000::/4016.8M × /64ARINUS26th Feb 2019
2620:13e:4000::/441M × /64ARINUS4th Mar 2019
2620:13e:6000::/4016.8M × /64ARINUS11th Mar 2019
2620:13e:8000::/441M × /64ARINUS13th Mar 2019
2620:13e:a000::/4016.8M × /64ARINUS21st Mar 2019
2620:13e:b000::/441M × /64ARINUS22nd Mar 2019
2620:13e:c000::/441M × /64ARINUS28th Mar 2019
2620:13e:f000::/441M × /64ARINUS8th Apr 2019
2620:13f:2000::/36268M × /64ARINUS18th Apr 2019
2620:13f:3000::/4016.8M × /64ARINUS29th Apr 2019
2620:13f:4000::/441M × /64ARINUS2nd May 2019
2620:13f:9000::/441M × /64ARINUS21st May 2019
2620:13f::/441M × /64ARINUS15th Apr 2019
2620:13f:b000::/441M × /64ARINUS30th May 2019
2620:13f:c000::/441M × /64ARINUS30th May 2019
2620:140::/3867.1M × /64ARINUS7th Sept 2010
2620:141::/36268M × /64ARINUS21st Jan 2011
2620:143::/37134M × /64ARINUS15th Feb 2011
2620:144::/324.3B × /64ARINUS23rd Mar 2011
2620:146::/36268M × /64ARINUS14th Apr 2011
2620:148::/36268M × /64ARINUS12th May 2011
2620:14:4000::/4865.5k × /64ARINUS3rd Jan 2013
2620:14:a000::/4865.5k × /64ARINUS17th Feb 2017
2620:14b::/36268M × /64ARINUS4th May 2011
2620:14c::/36268M × /64ARINUS20th Jun 2011
2620:14e::/36268M × /64ARINUS5th Jul 2011