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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 23451 to 23500 of 26277
PrefixAddressesRegistryCountryAllocated
2620:100:3000::/4016.8M × /64ARINUS1st Oct 2010
2620:100:7000::/441M × /64ARINUS19th Oct 2010
2620:100:c000::/424.2M × /64ARINUS23rd Nov 2010
2620:100:d000::/441M × /64ARINUS6th Dec 2010
2620:100:f000::/441M × /64ARINUS13th Dec 2010
2620:101:5000::/424.2M × /64ARINUS26th Jan 2011
2620:101:6000::/47131k × /64ARINUS28th Jan 2011
2620:101:7000::/47131k × /64ARINUS31st Jan 2011
2620:101:d000::/45524k × /64ARINUS10th Feb 2011
2620:102:3000::/441M × /64ARINUS16th Feb 2011
2620:102:5000::/432.1M × /64ARINUS23rd Feb 2011
2620:102:6000::/46262k × /64ARINUS23rd Feb 2011
2620:102:8000::/441M × /64ARINUS2nd Mar 2011
2620:102:9000::/4016.8M × /64ARINUS4th Mar 2011
2620:102::/441M × /64ARINUS11th Feb 2011
2620:102:c000::/45524k × /64ARINUS15th Mar 2011
2620:102:d000::/418.4M × /64ARINUS23rd Mar 2011
2620:102:e000::/441M × /64ARINUS23rd Mar 2011
2620:102:f000::/46262k × /64ARINUS23rd Mar 2011
2620:103:1000::/441M × /64ARINUS25th Mar 2011
2620:103:3000::/4016.8M × /64ARINUS4th Apr 2011
2620:103:5000::/441M × /64ARINUS6th Apr 2011
2620:103:6000::/441M × /64ARINUS7th Apr 2011
2620:103:7000::/441M × /64ARINUS12th Apr 2011
2620:103::/45524k × /64ARINUS23rd Mar 2011
2620:103:b000::/441M × /64ARINUS20th Apr 2011
2620:104:3000::/441M × /64ARINUS25th May 2011
2620:104:5000::/441M × /64ARINUS26th May 2011
2620:104:9000::/441M × /64ARINUS1st Jun 2011
2620:104:d000::/4016.8M × /64ARINUS6th Jun 2011
2620:104:f000::/441M × /64ARINUS14th Jun 2011
2620:105:2000::/4016.8M × /64ARINUS21st Jun 2011
2620:105:3000::/441M × /64ARINUS23rd Jun 2011
2620:105:4000::/441M × /64ARINUS23rd Jun 2011
2620:105:5000::/441M × /64ARINUS24th Jun 2011
2620:105:7000::/441M × /64ARINUS28th Jun 2011
2620:105:8000::/441M × /64ARINUS28th Jun 2011
2620:105:9000::/4016.8M × /64ARINUS28th Jun 2011
2620:105:a000::/441M × /64ARINUS5th Jul 2011
2620:105:e000::/4016.8M × /64ARINUS14th Jul 2011
2620:106:1000::/4016.8M × /64ARINUS20th Jul 2011
2620:106:4000::/441M × /64ARINUS1st Aug 2011
2620:106:5000::/4016.8M × /64ARINUS1st Aug 2011
2620:106:9000::/441M × /64ARINUS22nd Aug 2011
2620:106::/441M × /64ARINUS20th Jul 2011
2620:106:b000::/441M × /64ARINUS24th Aug 2011
2620:106:d000::/4016.8M × /64ARINUS26th Aug 2011
2620:107:2000::/441M × /64ARINUS13th Sept 2011
2620:107:5000::/4016.8M × /64ARINUS19th Sept 2011
2620:107:6000::/441M × /64ARINUS19th Sept 2011