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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

2,614 blocks match, ordered by prefix.

Allocated but unannounced blocks, 1851 to 1900 of 2614
PrefixAddressesRegistryCountryAllocated
2a07:41c0::/2934.4B × /64RIPE NCCGB25th May 2020
2a07:4440::/2934.4B × /64RIPE NCCGB30th Mar 2016
2a07:5840::/2934.4B × /64RIPE NCCGB15th Apr 2016
2a07:5b00::/2934.4B × /64RIPE NCCGB18th Apr 2016
2a07:5e00::/2934.4B × /64RIPE NCCGB20th Apr 2016
2a07:69c0::/2934.4B × /64RIPE NCCGB28th Apr 2016
2a07:6b80::/2934.4B × /64RIPE NCCGB29th Apr 2016
2a07:6e00::/2934.4B × /64RIPE NCCGB2nd May 2016
2a07:8040::/2934.4B × /64RIPE NCCGB17th May 2016
2a07:840::/2934.4B × /64RIPE NCCGB9th Feb 2016
2a07:8640::/2934.4B × /64RIPE NCCGB18th Nov 2025
2a07:92c0::/2934.4B × /64RIPE NCCGB8th Jun 2016
2a07:9600::/2934.4B × /64RIPE NCCGB13th Jun 2016
2a07:9780::/324.3B × /64RIPE NCCGB7th Aug 2025
2a07:9800::/2934.4B × /64RIPE NCCGB14th Jun 2016
2a07:9e80::/2934.4B × /64RIPE NCCGB17th Jun 2016
2a07:9ec0::/2934.4B × /64RIPE NCCGB17th Jun 2016
2a07:9f00::/2934.4B × /64RIPE NCCGB17th Jun 2016
2a07:aac0::/2934.4B × /64RIPE NCCGB4th Jul 2016
2a07:b480::/2934.4B × /64RIPE NCCGB14th Jul 2016
2a07:bf00::/2934.4B × /64RIPE NCCGB25th Jul 2016
2a07:bf40::/2934.4B × /64RIPE NCCGB25th Jul 2016
2a07:c0::/2934.4B × /64RIPE NCCGB2nd Feb 2016
2a07:c400::/2934.4B × /64RIPE NCCGB29th Jul 2016
2a07:e200::/2934.4B × /64RIPE NCCGB23rd May 2018
2a07:e500::/2934.4B × /64RIPE NCCGB24th May 2018
2a07:f900::/324.3B × /64RIPE NCCGB25th May 2018
2a07:fd80::/2934.4B × /64RIPE NCCGB7th Jun 2018
2a07:fdc0::/2934.4B × /64RIPE NCCGB12th Jul 2018
2a07:ffc0::/2934.4B × /64RIPE NCCGB13th Jul 2018
2a09:1300::/2934.4B × /64RIPE NCCGB14th Nov 2018
2a09:1580::/2934.4B × /64RIPE NCCGB28th Nov 2018
2a09:1880::/2934.4B × /64RIPE NCCGB28th Nov 2018
2a09:19c0::/324.3B × /64RIPE NCCGB16th Jan 2019
2a09:1dc0::/2934.4B × /64RIPE NCCGB18th Jan 2019
2a09:1f40::/2934.4B × /64RIPE NCCGB26th Apr 2023
2a09:2180::/2934.4B × /64RIPE NCCGB30th Nov 2018
2a09:2300::/2934.4B × /64RIPE NCCGB15th Nov 2018
2a09:2740::/2934.4B × /64RIPE NCCGB22nd Jan 2019
2a09:2e40::/2934.4B × /64RIPE NCCGB24th Jan 2019
2a09:2f40::/2934.4B × /64RIPE NCCGB24th Jan 2019
2a09:3f40::/2934.4B × /64RIPE NCCGB1st Feb 2019
2a09:4180::/2934.4B × /64RIPE NCCGB4th Dec 2018
2a09:4880::/324.3B × /64RIPE NCCGB5th Dec 2018
2a09:540::/2934.4B × /64RIPE NCCGB2nd Jan 2019
2a09:6a00::/2934.4B × /64RIPE NCCGB9th Nov 2018
2a09:7e40::/2934.4B × /64RIPE NCCGB20th Feb 2019
2a09:a340::/2934.4B × /64RIPE NCCGB1st Mar 2019
2a09:a5c0::/2934.4B × /64RIPE NCCGB4th Mar 2019
2a09:b200::/2934.4B × /64RIPE NCCGB12th Nov 2018