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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

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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, 24001 to 24050 of 26277
PrefixAddressesRegistryCountryAllocated
2620:14f::/36268M × /64ARINUS11th Jul 2011
2620:150::/36268M × /64ARINUS10th Aug 2011
2620:152::/36268M × /64ARINUS29th Sept 2011
2620:153::/36268M × /64ARINUS10th Oct 2011
2620:156::/36268M × /64ARINUS19th Mar 2012
2620:157::/36268M × /64ARINUS20th Mar 2012
2620:159::/36268M × /64ARINUS17th Apr 2012
2620:15:2000::/4865.5k × /64ARINUS24th Feb 2017
2620:15:4000::/4865.5k × /64ARINUS16th Apr 2026
2620:15:a000::/4865.5k × /64ARINUS1st Mar 2017
2620:15:c000::/4865.5k × /64ARINUS11th Jan 2013
2620:15a::/36268M × /64ARINUS23rd Apr 2012
2620:15b::/36268M × /64ARINUS7th Jun 2012
2620:15d::/324.3B × /64ARINUS20th Jun 2012
2620:15f::/36268M × /64ARINUS28th Jun 2012
2620:163::/36268M × /64ARINUS23rd Jul 2012
2620:164::/36268M × /64ARINUS30th Jul 2012
2620:165::/36268M × /64ARINUS24th Aug 2012
2620:166::/36268M × /64ARINUS21st Sept 2012
2620:167::/36268M × /64ARINUS4th Oct 2012
2620:168::/324.3B × /64ARINUS9th Oct 2012
2620:169::/36268M × /64ARINUS22nd Oct 2012
2620:16:2000::/4865.5k × /64ARINUS2nd Mar 2017
2620:16:4000::/4865.5k × /64ARINUS16th Jan 2013
2620:16:8000::/4865.5k × /64ARINUS14th Apr 2011
2620:16:c000::/4865.5k × /64ARINUS22nd Jan 2013
2620:16b::/324.3B × /64ARINUS30th May 2014
2620:16c::/36268M × /64ARINUS11th Dec 2012
2620:16f::/36268M × /64ARINUS19th Feb 2013
2620:170::/36268M × /64ARINUS28th Mar 2013
2620:172::/36268M × /64ARINUS8th Apr 2013
2620:173::/36268M × /64ARINUS12th Apr 2013
2620:174::/36268M × /64ARINUS2nd May 2013
2620:176::/324.3B × /64ARINUS31st May 2013
2620:178::/36268M × /64ARINUS11th Jun 2013
2620:179::/36268M × /64ARINUS18th Jun 2013
2620:17:2000::/4865.5k × /64ARINUS7th Mar 2017
2620:17:4000::/4865.5k × /64ARINUS23rd Jan 2013
2620:17:8000::/441M × /64ARINUS14th Apr 2011
2620:17::/4865.5k × /64ARINUS17th Dec 2010
2620:17:c000::/441M × /64ARINUS31st Jan 2013
2620:17:e000::/4865.5k × /64ARINUS14th Mar 2017
2620:17f::/324.3B × /64ARINUS16th Sept 2013
2620:180::/324.3B × /64ARINUS28th Apr 2011
2620:181::/36268M × /64ARINUS3rd Aug 2016
2620:182::/36268M × /64ARINUS5th Aug 2016
2620:183::/36268M × /64ARINUS26th Oct 2016
2620:185::/36268M × /64ARINUS14th Mar 2017
2620:187::/36268M × /64ARINUS1st May 2017
2620:188::/36268M × /64ARINUS9th May 2017