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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

26,283 blocks match, ordered by prefix.

Allocated but unannounced blocks, 22251 to 22300 of 26283
PrefixAddressesRegistryCountryAllocated
2605:5740::/36268M × /64ARINUS22nd Jul 2019
2605:5780::/324.3B × /64ARINUS12th Mar 2026
2605:57c0::/324.3B × /64ARINUS23rd Jul 2019
2605:5a00::/324.3B × /64ARINUS3rd Jan 2011
2605:5a40::/324.3B × /64ARINUS29th Jul 2019
2605:5a80::/324.3B × /64ARINUS20th Mar 2014
2605:5bc0::/324.3B × /64ARINUS30th Jul 2019
2605:5c00::/324.3B × /64ARINUS4th Aug 2010
2605:5c40::/324.3B × /64ARINUS30th Jul 2019
2605:5c80::/324.3B × /64ARINUS16th Mar 2026
2605:5cc0::/324.3B × /64ARINUS31st Jul 2019
2605:5d80::/324.3B × /64ARINUS2nd Apr 2014
2605:5dc0::/324.3B × /64ARINUS5th Aug 2019
2605:5e40::/324.3B × /64ARINUS8th Aug 2019
2605:5ec0::/324.3B × /64ARINUS8th Aug 2019
2605:5f00::/324.3B × /64ARINUS1st Jul 2011
2605:600::/324.3B × /64ARINUS7th Dec 2010
2605:6040::/324.3B × /64ARINUS20th Aug 2019
2605:6100::/324.3B × /64ARINUS1st Jul 2011
2605:6240::/324.3B × /64ARINUS27th Aug 2019
2605:6380::/324.3B × /64ARINUS24th Apr 2014
2605:63c0::/324.3B × /64ARINUS3rd Sept 2019
2605:640::/324.3B × /64ARINUS31st Oct 2018
2605:6540::/324.3B × /64ARINUS10th Sept 2019
2605:6580::/324.3B × /64ARINUS25th Apr 2014
2605:6680::/324.3B × /64ARINUS5th May 2014
2605:6700::/324.3B × /64ARINUS11th Jul 2011
2605:6780::/324.3B × /64ARINUS6th May 2014
2605:67c0::/324.3B × /64ARINUS20th Sept 2019
2605:680::/324.3B × /64ARINUS24th Sept 2013
2605:68c0::/324.3B × /64ARINUS20th Sept 2019
2605:6940::/324.3B × /64ARINUS20th Sept 2019
2605:69c0::/324.3B × /64ARINUS24th Sept 2019
2605:6a80::/324.3B × /64ARINUS12th May 2014
2605:6b80::/324.3B × /64ARINUS14th May 2014
2605:6bc0::/324.3B × /64ARINUS27th Sept 2019
2605:6cc0::/324.3B × /64ARINUS27th Sept 2019
2605:6d40::/324.3B × /64ARINUS30th Sept 2019
2605:6d80::/324.3B × /64ARINUS16th May 2014
2605:6ec0::/324.3B × /64ARINUS3rd Oct 2019
2605:7000::/324.3B × /64ARINUS25th Mar 2010
2605:7080::/324.3B × /64ARINUS20th May 2014
2605:7140::/324.3B × /64ARINUS15th Oct 2019
2605:7180::/324.3B × /64ARINUS20th May 2014
2605:740::/324.3B × /64ARINUS1st Nov 2018
2605:7500::/324.3B × /64ARINUS20th Jul 2011
2605:7540::/324.3B × /64ARINUS24th Oct 2019
2605:75c0::/324.3B × /64ARINUS25th Oct 2019
2605:7600::/36268M × /64ARINUS5th Jan 2011
2605:76c0::/324.3B × /64ARINUS30th Oct 2019