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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

2,577 blocks match, ordered by prefix.

Allocated but unannounced blocks, 2001 to 2050 of 2577
PrefixAddressesRegistryCountryAllocated
2a0c:7200::/2934.4B × /64RIPE NCCGB26th Jun 2020
2a0c:740::/2934.4B × /64RIPE NCCGB16th Mar 2018
2a0c:7640::/2934.4B × /64RIPE NCCGB20th Apr 2018
2a0c:7c40::/2934.4B × /64RIPE NCCGB24th Apr 2018
2a0c:80::/2934.4B × /64RIPE NCCGB14th Dec 2017
2a0c:8300::/2934.4B × /64RIPE NCCGB14th Nov 2017
2a0c:8800::/2934.4B × /64RIPE NCCGB25th Sept 2017
2a0c:8c40::/2934.4B × /64RIPE NCCGB3rd Jul 2020
2a0c:9140::/2934.4B × /64RIPE NCCGB1st May 2018
2a0c:9ec0::/2934.4B × /64RIPE NCCGB7th May 2018
2a0c:a140::/2934.4B × /64RIPE NCCGB8th May 2018
2a0c:ab00::/2934.4B × /64RIPE NCCGB7th May 2020
2a0c:af40::/2934.4B × /64RIPE NCCGB14th May 2018
2a0c:ba00::/2934.4B × /64RIPE NCCGB24th Oct 2017
2a0c:bc80::/2934.4B × /64RIPE NCCGB17th Jan 2018
2a0c:c640::/2934.4B × /64RIPE NCCGB14th Jul 2020
2a0c:cdc0::/2934.4B × /64RIPE NCCGB17th Jul 2020
2a0c:d580::/2934.4B × /64RIPE NCCGB20th Jul 2020
2a0c:f000::/324.3B × /64RIPE NCCGB21st Sept 2017
2a0c:f100::/2934.4B × /64RIPE NCCGB23rd Jul 2020
2a0c:f980::/2934.4B × /64RIPE NCCGB24th Jan 2018
2a0d:1200::/2934.4B × /64RIPE NCCGB27th Oct 2017
2a0d:16c0::/324.3B × /64RIPE NCCGB8th Aug 2018
2a0d:19c0::/2934.4B × /64RIPE NCCGB10th Aug 2018
2a0d:1b40::/324.3B × /64RIPE NCCGB10th Aug 2018
2a0d:1bc0::/2934.4B × /64RIPE NCCGB13th Aug 2018
2a0d:31c0::/2934.4B × /64RIPE NCCGB22nd Aug 2018
2a0d:3240::/2934.4B × /64RIPE NCCGB20th Aug 2026
2a0d:35c0::/2934.4B × /64RIPE NCCGB23rd Aug 2018
2a0d:3f00::/324.3B × /64RIPE NCCGB1st Dec 2017
2a0d:4000::/2934.4B × /64RIPE NCCGB18th Sept 2017
2a0d:4200::/2934.4B × /64RIPE NCCGB5th Feb 2024
2a0d:4280::/2934.4B × /64RIPE NCCGB5th Feb 2018
2a0d:4400::/2934.4B × /64RIPE NCCGB28th Jul 2020
2a0d:4800::/2934.4B × /64RIPE NCCGB29th Sept 2017
2a0d:4880::/2934.4B × /64RIPE NCCGB6th Feb 2018
2a0d:5400::/2934.4B × /64RIPE NCCGB10th Oct 2017
2a0d:54c0::/324.3B × /64RIPE NCCGB5th Sept 2018
2a0d:5c00::/2934.4B × /64RIPE NCCGB22nd Oct 2019
2a0d:5e00::/2934.4B × /64RIPE NCCGB31st Oct 2017
2a0d:640::/2934.4B × /64RIPE NCCGB2nd Aug 2018
2a0d:6a00::/2934.4B × /64RIPE NCCGB31st Oct 2017
2a0d:7440::/2934.4B × /64RIPE NCCGB14th Sept 2018
2a0d:7880::/2934.4B × /64RIPE NCCGB14th Feb 2018
2a0d:7a80::/324.3B × /64RIPE NCCGB14th Feb 2018
2a0d:7dc0::/2934.4B × /64RIPE NCCGB19th Sept 2018
2a0d:8100::/324.3B × /64RIPE NCCGB7th Dec 2017
2a0d:9780::/2934.4B × /64RIPE NCCGB20th Feb 2018
2a0d:a0c0::/2934.4B × /64RIPE NCCGB2nd Oct 2018
2a0d:a200::/2934.4B × /64RIPE NCCGB21st Sept 2022