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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 2051 to 2100 of 2577
PrefixAddressesRegistryCountryAllocated
2a0d:a380::/2934.4B × /64RIPE NCCGB16th Feb 2026
2a0d:a400::/2934.4B × /64RIPE NCCGB28th Aug 2026
2a0d:a580::/2934.4B × /64RIPE NCCGB22nd Feb 2018
2a0d:b4c0::/2934.4B × /64RIPE NCCGB9th Oct 2018
2a0d:b5c0::/2934.4B × /64RIPE NCCGB9th Oct 2018
2a0d:b8c0::/2934.4B × /64RIPE NCCGB9th Oct 2018
2a0d:bc40::/3017.2B × /64RIPE NCCGB10th Oct 2018
2a0d:be00::/2934.4B × /64RIPE NCCGB17th Jun 2021
2a0d:bf80::/2934.4B × /64RIPE NCCGB3rd Sept 2026
2a0d:c700::/2934.4B × /64RIPE NCCGB31st Jul 2020
2a0d:d340::/2934.4B × /64RIPE NCCGB17th Oct 2018
2a0d:d5c0::/2934.4B × /64RIPE NCCGB18th Oct 2018
2a0d:dc80::/2934.4B × /64RIPE NCCGB6th Mar 2018
2a0d:e100::/2934.4B × /64RIPE NCCGB17th Jun 2021
2a0d:f200::/2934.4B × /64RIPE NCCGB11th May 2023
2a0d:f40::/2934.4B × /64RIPE NCCGB17th Jul 2023
2a0d:f80::/2934.4B × /64RIPE NCCGB26th Jan 2018
2a0d:fa00::/2934.4B × /64RIPE NCCGB6th Nov 2017
2a0d:fe00::/2934.4B × /64RIPE NCCGB6th Nov 2017
2a0e:2dc0::/2934.4B × /64RIPE NCCGB8th Jul 2019
2a0e:3140::/2934.4B × /64RIPE NCCGB8th Jul 2019
2a0e:3640::/2934.4B × /64RIPE NCCGB10th Jul 2019
2a0e:380::/2934.4B × /64RIPE NCCGB8th Nov 2024
2a0e:4140::/2934.4B × /64RIPE NCCGB12th Jul 2019
2a0e:4500::/2934.4B × /64RIPE NCCGB25th Apr 2019
2a0e:4740::/2934.4B × /64RIPE NCCGB15th Jul 2019
2a0e:5980::/2934.4B × /64RIPE NCCGB20th May 2019
2a0e:62c0::/2934.4B × /64RIPE NCCGB22nd Jul 2019
2a0e:65c0::/2934.4B × /64RIPE NCCGB22nd Jul 2019
2a0e:7240::/2934.4B × /64RIPE NCCGB24th Jul 2019
2a0e:8280::/2934.4B × /64RIPE NCCGB28th May 2019
2a0e:9380::/2934.4B × /64RIPE NCCGB31st May 2019
2a0e:9a00::/2934.4B × /64RIPE NCCGB16th Apr 2019
2a0e:9e40::/324.3B × /64RIPE NCCGB2nd Aug 2019
2a0e:c640::/2934.4B × /64RIPE NCCGB13th Aug 2019
2a0e:e340::/2934.4B × /64RIPE NCCGB20th Aug 2019
2a0e:e40::/2934.4B × /64RIPE NCCGB27th Jun 2019
2a0e:edc0::/2934.4B × /64RIPE NCCGB22nd Aug 2019
2a0e:f100::/2934.4B × /64RIPE NCCGB6th May 2019
2a0e:f640::/324.3B × /64RIPE NCCGB21st Oct 2025
2a0e:f940::/2934.4B × /64RIPE NCCGB26th Aug 2019
2a0f:1a80::/2934.4B × /64RIPE NCCGB20th Sept 2019
2a0f:1f00::/2934.4B × /64RIPE NCCGB10th Sept 2019
2a0f:2d00::/324.3B × /64RIPE NCCGB10th Sept 2019
2a0f:2f00::/2934.4B × /64RIPE NCCGB10th Sept 2019
2a0f:3c0::/2934.4B × /64RIPE NCCGB23rd Oct 2019
2a0f:4980::/2934.4B × /64RIPE NCCGB23rd Sept 2026
2a0f:6080::/2934.4B × /64RIPE NCCGB27th Sept 2019
2a0f:66c0::/324.3B × /64RIPE NCCGB11th Nov 2019
2a0f:6e80::/324.3B × /64RIPE NCCGB30th Sept 2019