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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

85,356 blocks match, ordered by prefix.

Allocated but unannounced blocks, 37351 to 37400 of 85356
PrefixAddressesRegistryCountryAllocated
2001:7f8:fc::/4865.5k × /64RIPE NCCGB20th Nov 2025
2001:7f8:fd::/4865.5k × /64RIPE NCCUS6th Jul 2020
2001:7f8:fe::/4865.5k × /64RIPE NCCSE22nd Jul 2020
2001:7f8:ff::/4865.5k × /64RIPE NCCDE9th Dec 2025
2001:7f9:10::/4865.5k × /64RIPE NCCBY19th Feb 2026
2001:7fa:0:1::/641 × /64APNICHK16th Jan 2002
2001:7fa:0:2::/641 × /64APNICKR17th Jan 2002
2001:7fa:0:3::/641 × /64APNICJP26th Feb 2002
2001:7fa:10::/4865.5k × /64APNICCN31st May 2006
2001:7fa:11::/4865.5k × /64APNICAU31st Oct 2006
2001:7fa:1::/4865.5k × /64APNICTW23rd Oct 2002
2001:7fa:2::/4865.5k × /64APNICID4th Mar 2003
2001:7fa:3::/4865.5k × /64APNICNZ23rd Jul 2003
2001:7fa:4::/4865.5k × /64APNICNZ23rd Jul 2003
2001:7fa:5::/4865.5k × /64APNICCN6th Nov 2003
2001:7fa:6::/4865.5k × /64APNICVN27th Oct 2004
2001:7fa:7::/4865.5k × /64APNICJP26th May 2005
2001:7fa:8::/4865.5k × /64APNICKR29th Aug 2005
2001:7fa:9::/4865.5k × /64APNICAU20th Sept 2005
2001:7fa:a::/4865.5k × /64APNICAU21st Sept 2005
2001:7fa:b::/4865.5k × /64APNICAU22nd Sept 2005
2001:7fa:c::/47131k × /64APNICAU22nd Sept 2005
2001:7fa:e::/4865.5k × /64APNICAU22nd Sept 2005
2001:7fa:f::/4865.5k × /64APNICID29th Sept 2005
2001:7fc:1::/4865.5k × /64RIPE NCCBE13th Jul 2026
2001:830::/324.3B × /64RIPE NCCDE24th Jul 2002
2001:8d0::/2934.4B × /64RIPE NCCIT2nd Jul 2007
2001:928::/324.3B × /64RIPE NCCDE30th Sept 2002
2001:9400::/4016.8M × /64APNICSG17th Nov 2022
2001:958::/324.3B × /64RIPE NCCGB18th Oct 2002
2001:960::/324.3B × /64RIPE NCCNL21st Oct 2002
2001:988::/324.3B × /64RIPE NCCFR25th Oct 2002
2001:990::/324.3B × /64RIPE NCCNL28th Oct 2002
2001:a000::/218.8T × /64APNICJP1st Dec 2004
2001:a20::/324.3B × /64RIPE NCCDE20th Nov 2002
2001:a30::/2934.4B × /64RIPE NCCIT27th Nov 2002
2001:a50::/324.3B × /64RIPE NCCES17th Dec 2002
2001:a58::/324.3B × /64RIPE NCCRU8th Apr 2009
2001:a80::/324.3B × /64RIPE NCCIT10th Jan 2003
2001:b40::/324.3B × /64RIPE NCCIT24th Feb 2003
2001:c40::/324.3B × /64APNICJP8th Aug 2002
2001:c58::/324.3B × /64APNICTW27th Aug 2002
2001:c60::/324.3B × /64APNICPG27th Aug 2002
2001:c70::/324.3B × /64APNICJP10th Sept 2002
2001:ca0::/324.3B × /64APNICTW2nd Oct 2002
2001:ca8::/324.3B × /64APNICIN4th Oct 2002
2001:cb8::/324.3B × /64APNICJP11th Oct 2002
2001:cd0::/324.3B × /64APNICJP5th Dec 2002
2001:ce1::/324.3B × /64APNICHK14th Dec 2017
2001:d48::/324.3B × /64APNICTW23rd May 2003