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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

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Countries with the most unannounced blocks, largest first.

Unannounced blocks in United Kingdom

2,663 blocks match, ordered by prefix.

Allocated but unannounced blocks, 2201 to 2250 of 2663
PrefixAddressesRegistryCountryAllocated
2a10:8e80::/2934.4B × /64RIPE NCCGB8th Dec 2020
2a10:9e00::/2934.4B × /64RIPE NCCGB29th Oct 2020
2a10:b3c0::/324.3B × /64RIPE NCCGB15th Mar 2021
2a10:b400::/2934.4B × /64RIPE NCCGB19th Oct 2020
2a10:bcc0::/2934.4B × /64RIPE NCCGB18th Mar 2021
2a10:ca00::/324.3B × /64RIPE NCCGB3rd Nov 2020
2a10:d480::/2934.4B × /64RIPE NCCGB14th Jan 2021
2a10:da80::/2934.4B × /64RIPE NCCGB18th Jan 2021
2a10:e5c0::/2934.4B × /64RIPE NCCGB23rd Apr 2021
2a10:e740::/2934.4B × /64RIPE NCCGB23rd Apr 2021
2a10:e940::/2934.4B × /64RIPE NCCGB28th Apr 2021
2a10:f0c0::/2934.4B × /64RIPE NCCGB4th May 2021
2a10:f140::/2934.4B × /64RIPE NCCGB5th May 2021
2a10:f200::/2934.4B × /64RIPE NCCGB6th Nov 2020
2a10:f340::/2934.4B × /64RIPE NCCGB5th May 2021
2a10:f380::/2934.4B × /64RIPE NCCGB21st Jan 2021
2a10:fd40::/2934.4B × /64RIPE NCCGB25th Jun 2021
2a11:18c0::/2934.4B × /64RIPE NCCGB14th Sept 2021
2a11:1c0::/2934.4B × /64RIPE NCCGB29th Jun 2021
2a11:3a00::/2934.4B × /64RIPE NCCGB7th Nov 2025
2a11:4680::/324.3B × /64RIPE NCCGB2nd Oct 2025
2a11:5c0::/2934.4B × /64RIPE NCCGB30th Jun 2021
2a11:60c0::/2934.4B × /64RIPE NCCGB1st Oct 2021
2a11:7840::/2934.4B × /64RIPE NCCGB5th Oct 2021
2a11:7b40::/2934.4B × /64RIPE NCCGB24th Nov 2025
2a11:9840::/2934.4B × /64RIPE NCCGB11th Oct 2021
2a11:9d00::/2934.4B × /64RIPE NCCGB5th Aug 2021
2a11:d540::/2934.4B × /64RIPE NCCGB22nd Oct 2021
2a11:d5c0::/2934.4B × /64RIPE NCCGB22nd Oct 2021
2a11:e00::/2934.4B × /64RIPE NCCGB8th Feb 2024
2a11:f440::/2934.4B × /64RIPE NCCGB27th Oct 2021
2a11:fd00::/2934.4B × /64RIPE NCCGB11th Aug 2021
2a12:1380::/2934.4B × /64RIPE NCCGB19th Nov 2021
2a12:2080::/2934.4B × /64RIPE NCCGB19th Nov 2021
2a12:3680::/324.3B × /64RIPE NCCGB22nd Nov 2021
2a12:3e00::/2934.4B × /64RIPE NCCGB4th Nov 2021
2a12:43c0::/2934.4B × /64RIPE NCCGB6th Jan 2022
2a12:50c0::/2934.4B × /64RIPE NCCGB11th Jan 2022
2a12:6340::/2934.4B × /64RIPE NCCGB24th Jan 2022
2a12:7b40::/2934.4B × /64RIPE NCCGB15th Feb 2022
2a12:88c0::/2934.4B × /64RIPE NCCGB22nd Feb 2022
2a12:9540::/2934.4B × /64RIPE NCCGB7th Mar 2022
2a12:9c40::/2934.4B × /64RIPE NCCGB10th Mar 2022
2a12:a40::/2934.4B × /64RIPE NCCGB11th Dec 2025
2a12:c200::/2934.4B × /64RIPE NCCGB8th Nov 2021
2a12:c9c0::/324.3B × /64RIPE NCCGB12th Apr 2022
2a12:ca00::/2934.4B × /64RIPE NCCGB8th Nov 2021
2a12:cb80::/2934.4B × /64RIPE NCCGB1st Dec 2021
2a12:cfc0::/2934.4B × /64RIPE NCCGB21st Apr 2022
2a12:d240::/2934.4B × /64RIPE NCCGB22nd Apr 2022