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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

85,310 blocks match, ordered by prefix.

Allocated but unannounced blocks, 35201 to 35250 of 85310
PrefixAddressesRegistryCountryAllocated
2001:4990::/324.3B × /64ARINUS26th Oct 2005
2001:49a0::/324.3B × /64ARINUS27th Oct 2005
2001:49a8::/324.3B × /64ARINUS27th Oct 2005
2001:49c0::/324.3B × /64ARINUS2nd Nov 2005
2001:49d8::/324.3B × /64ARINUS22nd Nov 2005
2001:49e0::/324.3B × /64ARINUS23rd Nov 2005
2001:4b0::/324.3B × /64ARINUS13th Nov 2001
2001:4b40::/324.3B × /64RIPE NCCAT20th Jan 2005
2001:4b50::/2934.4B × /64RIPE NCCBE31st Jan 2005
2001:4b70::/2934.4B × /64RIPE NCCIT3rd Feb 2005
2001:4b90::/324.3B × /64RIPE NCCFR18th Feb 2005
2001:4bd0::/324.3B × /64RIPE NCCGB4th Mar 2005
2001:4be0::/324.3B × /64RIPE NCCRU9th Mar 2005
2001:4be8::/324.3B × /64RIPE NCCGB10th Mar 2005
2001:4c60::/324.3B × /64RIPE NCCES9th May 2005
2001:4c88::/324.3B × /64RIPE NCCIR17th May 2005
2001:4cb0::/324.3B × /64RIPE NCCGB13th Jun 2005
2001:4d00::/324.3B × /64RIPE NCCAM12th Jul 2005
2001:4d08::/324.3B × /64RIPE NCCDE15th Jul 2005
2001:4d10::/324.3B × /64RIPE NCCES20th Jul 2005
2001:4d30::/324.3B × /64RIPE NCCGB22nd Aug 2005
2001:4db0::/324.3B × /64RIPE NCCDK3rd Nov 2005
2001:4f0::/324.3B × /64ARINUS3rd Feb 2010
2001:500:100::/45524k × /64ARINUS22nd Aug 2011
2001:500:108::/47131k × /64ARINUS22nd Aug 2011
2001:500:10::/4865.5k × /64ARINPR7th Nov 2006
2001:500:11::/4865.5k × /64ARINUS29th Nov 2006
2001:500:30::/4865.5k × /64ARINUS5th Mar 2008
2001:500:4431::/4865.5k × /64ARINUS18th May 2010
2001:500:56::/4865.5k × /64ARINUS26th Nov 2008
2001:500:6::/47131k × /64ARINUS19th Oct 2006
2001:500:6f::/4865.5k × /64ARINUS9th Jan 2009
2001:500:7c::/4865.5k × /64ARINUS9th Jan 2009
2001:500:85::/4865.5k × /64ARINUS11th Feb 2010
2001:500:90::/45524k × /64ARINUS26th May 2010
2001:500:98::/4865.5k × /64ARINUS4th Jun 2010
2001:501:973c::/4865.5k × /64ARINUS8th Oct 2010
2001:502:63bd::/4865.5k × /64ARINUS8th Oct 2010
2001:502:7a71::/4865.5k × /64ARINUS30th Nov 2004
2001:502:cfb5::/4865.5k × /64ARINUS30th Nov 2004
2001:503:7bbb::/4865.5k × /64ARINUS12th Aug 2004
2001:503:8028::/4865.5k × /64ARINUS13th Aug 2004
2001:503:a124::/4865.5k × /64ARINUS13th Aug 2004
2001:503:c779::/4865.5k × /64ARINUS12th Aug 2004
2001:503:cc2c::/4865.5k × /64ARINUS3rd Jun 2004
2001:503:d1ae::/4865.5k × /64ARINUS13th Aug 2004
2001:504:100::/4865.5k × /64ARINUS16th Jul 2020
2001:504:101::/4865.5k × /64ARINUS16th Sept 2020
2001:504:102::/4865.5k × /64ARINUS6th Oct 2020
2001:504:104::/4865.5k × /64ARINUS19th Jan 2021