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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Unannounced blocks in United States

599 blocks match, ordered by prefix.

Allocated but unannounced blocks, 401 to 450 of 599
PrefixAddressesRegistryCountryAllocated
2a0b:e480::/2934.4B × /64RIPE NCCUS9th Feb 2017
2a0b:e8c0::/2934.4B × /64RIPE NCCUS5th Sept 2017
2a0b:ef80::/2934.4B × /64RIPE NCCUS10th Feb 2017
2a0b:f000::/324.3B × /64RIPE NCCUS10th Aug 2016
2a0b:ff00::/2934.4B × /64RIPE NCCUS31st Oct 2016
2a0c:1840::/2934.4B × /64RIPE NCCUS22nd Mar 2018
2a0c:3940::/2934.4B × /64RIPE NCCUS4th Apr 2018
2a0c:3a40::/2934.4B × /64RIPE NCCUS4th Apr 2018
2a0c:41c0::/2934.4B × /64RIPE NCCUS5th Apr 2018
2a0c:5200::/2934.4B × /64RIPE NCCUS18th Oct 2017
2a0c:6b40::/2934.4B × /64RIPE NCCUS19th Apr 2018
2a0c:7f80::/2934.4B × /64RIPE NCCUS10th Jan 2018
2a0c:81c0::/2934.4B × /64RIPE NCCUS2nd Jul 2020
2a0c:8bc0::/2934.4B × /64RIPE NCCUS26th Apr 2018
2a0c:9440::/2934.4B × /64RIPE NCCUS19th Aug 2025
2a0c:9d80::/2934.4B × /64RIPE NCCUS15th Jan 2018
2a0c:a540::/2934.4B × /64RIPE NCCUS9th May 2018
2a0c:aec0::/2934.4B × /64RIPE NCCUS14th May 2018
2a0c:b740::/2934.4B × /64RIPE NCCUS15th May 2018
2a0c:d3c0::/2934.4B × /64RIPE NCCUS17th Jul 2018
2a0c:df40::/2934.4B × /64RIPE NCCUS19th Jul 2018
2a0c:fe40::/2934.4B × /64RIPE NCCUS31st Jul 2018
2a0d:21c0::/2934.4B × /64RIPE NCCUS14th Aug 2018
2a0d:3940::/2934.4B × /64RIPE NCCUS24th Aug 2018
2a0d:69c0::/2934.4B × /64RIPE NCCUS13th Sept 2018
2a0d:6dc0::/2934.4B × /64RIPE NCCUS13th Sept 2018
2a0d:77c0::/2934.4B × /64RIPE NCCUS18th Sept 2018
2a0d:87c0::/2934.4B × /64RIPE NCCUS21st Sept 2018
2a0d:8a40::/2934.4B × /64RIPE NCCUS24th Sept 2018
2a0d:8c0::/2934.4B × /64RIPE NCCUS3rd Aug 2018
2a0d:90c0::/2934.4B × /64RIPE NCCUS25th Sept 2018
2a0d:9380::/2934.4B × /64RIPE NCCUS19th Feb 2018
2a0d:a4c0::/2934.4B × /64RIPE NCCUS2nd Oct 2018
2a0d:ac40::/2934.4B × /64RIPE NCCUS4th Oct 2018
2a0d:b040::/2934.4B × /64RIPE NCCUS5th Oct 2018
2a0d:ba40::/2934.4B × /64RIPE NCCUS9th Oct 2018
2a0d:bf40::/2934.4B × /64RIPE NCCUS11th Oct 2018
2a0d:c800::/2934.4B × /64RIPE NCCUS2nd Oct 2017
2a0d:cd40::/2934.4B × /64RIPE NCCUS16th Oct 2018
2a0d:e2c0::/2934.4B × /64RIPE NCCUS23rd Oct 2018
2a0d:e9c0::/2934.4B × /64RIPE NCCUS24th Oct 2018
2a0d:ea40::/2934.4B × /64RIPE NCCUS24th Oct 2018
2a0d:eac0::/2934.4B × /64RIPE NCCUS24th Oct 2018
2a0d:f800::/2934.4B × /64RIPE NCCUS3rd Oct 2017
2a0d:fa40::/2934.4B × /64RIPE NCCUS29th Oct 2018
2a0d:ff80::/324.3B × /64RIPE NCCUS13th Mar 2018
2a0e:5440::/2934.4B × /64RIPE NCCUS17th Jul 2019
2a0e:5a40::/2934.4B × /64RIPE NCCUS18th Jul 2019
2a0e:6d40::/2934.4B × /64RIPE NCCUS23rd Jul 2019
2a0e:8b00::/2934.4B × /64RIPE NCCUS30th Apr 2019