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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

30,434 blocks match, ordered by prefix.

Allocated but unannounced blocks, 27601 to 27650 of 30434
PrefixAddressesRegistryCountryAllocated
2620:119:c000::/441M × /64ARINUS4th Jun 2014
2620:119:d000::/4016.8M × /64ARINUS4th Jun 2014
2620:11:4000::/4865.5k × /64ARINUS10th Jun 2013
2620:11:6000::/4865.5k × /64ARINUS11th Jan 2017
2620:11:8000::/4865.5k × /64ARINUS6th Jun 2025
2620:11a:1000::/441M × /64ARINCA11th Jun 2014
2620:11a:3000::/4016.8M × /64ARINUS16th Jun 2014
2620:11a:4000::/4016.8M × /64ARINUS16th Jun 2014
2620:11a:7000::/441M × /64ARINUS17th Jun 2014
2620:11a:8000::/441M × /64ARINUS19th Jun 2014
2620:11a:9000::/441M × /64ARINUS23rd Jun 2014
2620:11a:e000::/441M × /64ARINUS16th Jul 2014
2620:11a:f000::/36268M × /64ARINUS18th Jul 2014
2620:11b:1000::/4016.8M × /64ARINUS22nd Jul 2014
2620:11b:2000::/4016.8M × /64ARINUS24th Jul 2014
2620:11b:5000::/441M × /64ARINUS25th Jul 2014
2620:11b:6000::/441M × /64ARINUS31st Jul 2014
2620:11b:8000::/4016.8M × /64ARINUS4th Aug 2014
2620:11b:9000::/441M × /64ARINUS8th Aug 2014
2620:11b::/4016.8M × /64ARINUS22nd Jul 2014
2620:11b:a000::/441M × /64ARINUS11th Aug 2014
2620:11b:b000::/441M × /64ARINUS12th Aug 2014
2620:11b:c000::/441M × /64ARINUS12th Aug 2014
2620:11c:2000::/4016.8M × /64ARINCA5th Sept 2014
2620:11c:7000::/441M × /64ARINUS18th Sept 2014
2620:11c:b000::/441M × /64ARINUS14th Oct 2014
2620:11c:c000::/441M × /64ARINCA24th Oct 2014
2620:11c:d000::/441M × /64ARINUS24th Oct 2014
2620:11c:e000::/441M × /64ARINUS28th Oct 2014
2620:11d:1000::/441M × /64ARINUS7th Nov 2014
2620:11d:7000::/441M × /64ARINUS16th Dec 2014
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
2620:11d:f000::/4016.8M × /64ARINCA20th 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:d000::/441M × /64ARINCA26th Mar 2015
2620:11e:e000::/441M × /64ARINUS30th Mar 2015