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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

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Browse by country

Countries with the most unannounced blocks, largest first.

Unannounced blocks in United Kingdom

2,663 blocks match, ordered by prefix.

Allocated but unannounced blocks, 2251 to 2300 of 2663
PrefixAddressesRegistryCountryAllocated
2a12:d80::/2934.4B × /64RIPE NCCGB18th Nov 2021
2a12:eb80::/2934.4B × /64RIPE NCCGB3rd Dec 2021
2a12:fac0::/324.3B × /64RIPE NCCGB12th Mar 2026
2a13:1040::/2934.4B × /64RIPE NCCGB24th Oct 2022
2a13:1100::/2934.4B × /64RIPE NCCGB29th Jun 2022
2a13:1500::/2934.4B × /64RIPE NCCGB29th Jun 2022
2a13:1d40::/2934.4B × /64RIPE NCCGB4th Nov 2022
2a13:2740::/2934.4B × /64RIPE NCCGB10th Nov 2022
2a13:2b00::/2934.4B × /64RIPE NCCGB4th Jul 2022
2a13:2b80::/2934.4B × /64RIPE NCCGB18th Aug 2022
2a13:3800::/2934.4B × /64RIPE NCCGB7th Jun 2022
2a13:4240::/2934.4B × /64RIPE NCCGB25th Nov 2022
2a13:4380::/2934.4B × /64RIPE NCCGB25th Aug 2022
2a13:52c0::/2934.4B × /64RIPE NCCGB6th Dec 2022
2a13:6500::/2934.4B × /64RIPE NCCGB20th Jul 2022
2a13:6a00::/2934.4B × /64RIPE NCCGB24th Jun 2022
2a13:6d00::/324.3B × /64RIPE NCCGB22nd Jul 2022
2a13:7040::/2934.4B × /64RIPE NCCGB27th Dec 2022
2a13:7a00::/2934.4B × /64RIPE NCCGB27th Jun 2022
2a13:7ec0::/2934.4B × /64RIPE NCCGB9th Jun 2023
2a13:7f40::/324.3B × /64RIPE NCCGB25th Mar 2026
2a13:80::/324.3B × /64RIPE NCCGB1st Aug 2022
2a13:80c0::/2934.4B × /64RIPE NCCGB14th Jun 2023
2a13:8400::/324.3B × /64RIPE NCCGB20th Jan 2023
2a13:8940::/2934.4B × /64RIPE NCCGB4th Jul 2023
2a13:8e80::/2934.4B × /64RIPE NCCGB24th Feb 2023
2a13:92c0::/2934.4B × /64RIPE NCCGB17th Jul 2023
2a13:a800::/2934.4B × /64RIPE NCCGB18th Jan 2023
2a13:a840::/2934.4B × /64RIPE NCCGB10th Aug 2023
2a13:ab40::/324.3B × /64RIPE NCCGB14th Aug 2023
2a13:ab80::/324.3B × /64RIPE NCCGB3rd Mar 2023
2a13:ac0::/2934.4B × /64RIPE NCCGB19th Oct 2022
2a13:b5c0::/2934.4B × /64RIPE NCCGB23rd Aug 2023
2a13:bb00::/2934.4B × /64RIPE NCCGB13th Feb 2023
2a13:c0::/2934.4B × /64RIPE NCCGB12th Oct 2022
2a13:c980::/324.3B × /64RIPE NCCGB17th Mar 2023
2a13:cb00::/2934.4B × /64RIPE NCCGB15th Feb 2023
2a13:d4c0::/2934.4B × /64RIPE NCCGB6th Sept 2023
2a13:d540::/324.3B × /64RIPE NCCGB7th Sept 2023
2a13:d5c0::/2934.4B × /64RIPE NCCGB7th Sept 2023
2a13:db80::/2934.4B × /64RIPE NCCGB27th Mar 2023
2a13:e540::/2934.4B × /64RIPE NCCGB20th Sept 2023
2a13:e680::/2934.4B × /64RIPE NCCGB31st Mar 2023
2a13:e7c0::/2934.4B × /64RIPE NCCGB21st Sept 2023
2a13:e840::/2934.4B × /64RIPE NCCGB21st Sept 2023
2a13:ecc0::/2934.4B × /64RIPE NCCGB22nd Sept 2023
2a13:f240::/2934.4B × /64RIPE NCCGB27th Sept 2023
2a13:ff40::/2934.4B × /64RIPE NCCGB10th Oct 2023
2a14:1340::/2934.4B × /64RIPE NCCGB6th Mar 2024
2a14:33c0::/2934.4B × /64RIPE NCCGB4th Apr 2024