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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 the most unannounced blocks, largest first.

Unannounced blocks in United States

27,007 blocks match, ordered by prefix.

Allocated but unannounced blocks, 22051 to 22100 of 27007
PrefixAddressesRegistryCountryAllocated
2602:ffc9::/36268M × /64ARINUS27th Mar 2014
2602:ffcf::/36268M × /64ARINUS27th Jan 2014
2602:ffd0::/36268M × /64ARINUS22nd Jan 2013
2602:ffd7::/36268M × /64ARINUS4th Dec 2013
2602:ffd8::/36268M × /64ARINUS18th Nov 2013
2602:ffdb::/36268M × /64ARINUS7th Nov 2013
2602:ffdc::/36268M × /64ARINUS6th Nov 2013
2602:ffdf::/36268M × /64ARINUS25th Oct 2013
2602:ffea::/324.3B × /64ARINUS23rd Aug 2013
2602:ffeb::/36268M × /64ARINUS26th Jul 2013
2602:ffee::/36268M × /64ARINUS18th Jul 2013
2602:ffef::/36268M × /64ARINUS17th Jul 2013
2602:fff0::/36268M × /64ARINUS4th Dec 2012
2602:fff7::/36268M × /64ARINUS28th Jun 2013
2602:fffc::/324.3B × /64ARINUS18th Apr 2013
2602:ffff::/36268M × /64ARINUS12th Mar 2013
2604:100::/324.3B × /64ARINUS18th Mar 2011
2604:1020::/324.3B × /64ARINUS13th May 2025
2604:1060::/324.3B × /64ARINUS19th May 2025
2604:1080::/324.3B × /64ARINUS27th Aug 2012
2604:10::/324.3B × /64ARINUS26th Oct 2010
2604:10a0::/324.3B × /64ARINUS19th May 2025
2604:1100::/324.3B × /64ARINUS22nd Mar 2011
2604:1140::/324.3B × /64ARINUS30th Jan 2017
2604:1160::/324.3B × /64ARINUS28th May 2025
2604:1180::/324.3B × /64ARINUS27th Aug 2012
2604:1200::/324.3B × /64ARINUS20th Oct 2010
2604:1220::/324.3B × /64ARINUS2nd Jun 2025
2604:1240::/324.3B × /64ARINUS2nd Feb 2017
2604:1260::/324.3B × /64ARINUS4th Jun 2025
2604:12c0::/324.3B × /64ARINUS3rd Feb 2017
2604:1320::/324.3B × /64ARINUS6th Jun 2025
2604:1360::/324.3B × /64ARINUS9th Jun 2025
2604:13e0::/324.3B × /64ARINUS13th Jun 2025
2604:1440::/324.3B × /64ARINUS7th Feb 2017
2604:14a0::/324.3B × /64ARINUS20th Jun 2025
2604:1540::/324.3B × /64ARINUS8th Feb 2017
2604:15a0::/324.3B × /64ARINUS26th Jun 2025
2604:15c0::/324.3B × /64ARINUS9th Feb 2017
2604:1620::/324.3B × /64ARINUS7th Jul 2025
2604:1660::/324.3B × /64ARINUS8th Jul 2025
2604:16c0::/324.3B × /64ARINUS10th Feb 2017
2604:16e0::/324.3B × /64ARINUS15th Jul 2025
2604:1720::/324.3B × /64ARINUS17th Jul 2025
2604:17a0::/324.3B × /64ARINUS21st Jul 2025
2604:1820::/324.3B × /64ARINUS23rd Jul 2025
2604:1880::/324.3B × /64ARINUS6th Sept 2012
2604:19c0::/324.3B × /64ARINUS24th Feb 2017
2604:19e0::/324.3B × /64ARINUS30th Jul 2025
2604:1a40::/324.3B × /64ARINUS24th Feb 2017