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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 23901 to 23950 of 26277
PrefixAddressesRegistryCountryAllocated
2620:135:e000::/4016.8M × /64ARINUS12th Feb 2018
2620:136:1000::/441M × /64ARINUS20th Feb 2018
2620:136:3000::/4016.8M × /64ARINUS23rd Feb 2018
2620:136:5000::/441M × /64ARINUS26th Feb 2018
2620:136:6000::/441M × /64ARINUS27th Feb 2018
2620:136:7000::/4016.8M × /64ARINUS1st Mar 2018
2620:136:8000::/4016.8M × /64ARINUS2nd Mar 2018
2620:136:9000::/4016.8M × /64ARINUS2nd Mar 2018
2620:136::/4016.8M × /64ARINUS13th Feb 2018
2620:136:b000::/4016.8M × /64ARINUS9th Mar 2018
2620:136:d000::/4016.8M × /64ARINUS15th Mar 2018
2620:136:e000::/4016.8M × /64ARINUS20th Mar 2018
2620:137:2000::/441M × /64ARINUS26th Mar 2018
2620:137:3000::/4016.8M × /64ARINUS27th Mar 2018
2620:137:8000::/441M × /64ARINUS9th Apr 2018
2620:137:b000::/4016.8M × /64ARINUS17th Apr 2018
2620:137:c000::/441M × /64ARINUS20th Apr 2018
2620:137:f000::/4016.8M × /64ARINUS26th Apr 2018
2620:138:2000::/441M × /64ARINUS3rd May 2018
2620:138:4000::/4016.8M × /64ARINUS9th May 2018
2620:138:7000::/441M × /64ARINUS22nd May 2018
2620:138::/441M × /64ARINUS30th Apr 2018
2620:138:a000::/4016.8M × /64ARINUS22nd May 2018
2620:138:d000::/441M × /64ARINUS25th May 2018
2620:138:f000::/4016.8M × /64ARINUS29th May 2018
2620:139:1000::/4016.8M × /64ARINUS4th Jun 2018
2620:139:3000::/441M × /64ARINUS15th Jun 2018
2620:139:8000::/4016.8M × /64ARINUS3rd Jul 2018
2620:139:9000::/441M × /64ARINUS3rd Jul 2018
2620:139:b000::/4016.8M × /64ARINUS11th Jul 2018
2620:139:c000::/4016.8M × /64ARINUS11th Jul 2018
2620:139:e000::/441M × /64ARINUS18th Jul 2018
2620:13:8000::/4865.5k × /64ARINUS13th Apr 2011
2620:13:c000::/4865.5k × /64ARINUS2nd Jan 2013
2620:13:e000::/4865.5k × /64ARINUS7th Feb 2017
2620:13a:1000::/4016.8M × /64ARINUS31st Jul 2018
2620:13a:3000::/441M × /64ARINUS14th Aug 2018
2620:13a:5000::/441M × /64ARINUS20th Aug 2018
2620:13a:6000::/441M × /64ARINUS23rd Aug 2018
2620:13a:9000::/4016.8M × /64ARINUS28th Aug 2018
2620:13a:a000::/4016.8M × /64ARINUS29th Aug 2018
2620:13a:d000::/36268M × /64ARINUS5th Sept 2018
2620:13a:e000::/4016.8M × /64ARINUS7th Sept 2018
2620:13b:1000::/4016.8M × /64ARINUS13th Sept 2018
2620:13b:2000::/4016.8M × /64ARINUS17th Sept 2018
2620:13b:4000::/4016.8M × /64ARINUS20th Sept 2018
2620:13b:5000::/441M × /64ARINUS20th Sept 2018
2620:13b:6000::/4016.8M × /64ARINUS24th Sept 2018
2620:13b:7000::/441M × /64ARINUS24th Sept 2018
2620:13b:8000::/4016.8M × /64ARINUS26th Sept 2018