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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 21651 to 21700 of 26283
PrefixAddressesRegistryCountryAllocated
2602:ff54::/36268M × /64ARINUS1st Mar 2016
2602:ff55::/36268M × /64ARINUS23rd Feb 2016
2602:ff5d::/36268M × /64ARINUS15th Jan 2016
2602:ff60::/4016.8M × /64ARINUS28th Jan 2026
2602:ff61::/36268M × /64ARINUS29th Dec 2015
2602:ff69::/36268M × /64ARINUS2nd Oct 2015
2602:ff6b::/36268M × /64ARINUS28th Sept 2015
2602:ff6f::/36268M × /64ARINUS1st Sept 2015
2602:ff72::/36268M × /64ARINUS19th Aug 2015
2602:ff77::/36268M × /64ARINUS21st Jul 2015
2602:ff78::/4016.8M × /64ARINUS2nd Feb 2026
2602:ff7d::/36268M × /64ARINUS19th Jun 2015
2602:ff80::/36268M × /64ARINUS4th Jun 2015
2602:ff81::/36268M × /64ARINUS3rd Jun 2015
2602:ff82::/36268M × /64ARINUS14th May 2015
2602:ff8a::/36268M × /64ARINUS26th Mar 2015
2602:ff8c::/36268M × /64ARINUS4th Mar 2015
2602:ff8e::/324.3B × /64ARINUS24th Feb 2015
2602:ff90::/36268M × /64ARINUS23rd Feb 2015
2602:ff91::/36268M × /64ARINUS17th Feb 2015
2602:ff92::/36268M × /64ARINUS30th Jan 2015
2602:ff9b::/36268M × /64ARINUS8th Dec 2014
2602:ff9e::/4016.8M × /64ARINUS3rd Feb 2026
2602:ffa3::/36268M × /64ARINUS30th Sept 2014
2602:ffa8::/36268M × /64ARINUS10th Sept 2014
2602:ffae::/36268M × /64ARINUS8th Aug 2014
2602:ffb2::/36268M × /64ARINUS3rd Jul 2014
2602:ffb4::/324.3B × /64ARINUS24th Jun 2014
2602:ffb9::/36268M × /64ARINUS11th Jun 2014
2602:ffbf::/36268M × /64ARINUS3rd Feb 2026
2602:ffc2::/36268M × /64ARINUS13th May 2014
2602:ffc3::/36268M × /64ARINUS8th May 2014
2602:ffc4::/36268M × /64ARINUS5th May 2014
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