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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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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Countries with unannounced space registered through RIPE NCC, largest first.

Unannounced blocks registered through RIPE NCC

24,891 blocks match, ordered by prefix.

Allocated but unannounced blocks, 20201 to 20250 of 24891
PrefixAddressesRegistryCountryAllocated
2a12:3a40::/324.3B × /64RIPE NCCSE23rd Feb 2026
2a12:3ac0::/2934.4B × /64RIPE NCCRU5th Jan 2022
2a12:3c40::/2934.4B × /64RIPE NCCCY5th Jan 2022
2a12:3e00::/2934.4B × /64RIPE NCCGB4th Nov 2021
2a12:3e40::/2934.4B × /64RIPE NCCNL5th Jan 2022
2a12:3f80::/2934.4B × /64RIPE NCCLT22nd Nov 2021
2a12:400::/2934.4B × /64RIPE NCCSC2nd Nov 2021
2a12:4080::/2934.4B × /64RIPE NCCTR22nd Nov 2021
2a12:40::/2934.4B × /64RIPE NCCSC10th Dec 2021
2a12:4100::/2934.4B × /64RIPE NCCSC11th Nov 2021
2a12:4240::/2934.4B × /64RIPE NCCRU6th Jan 2022
2a12:4280::/2934.4B × /64RIPE NCCSC22nd Nov 2021
2a12:4300::/2934.4B × /64RIPE NCCRU11th Nov 2021
2a12:4380::/2934.4B × /64RIPE NCCSC22nd Nov 2021
2a12:43c0::/2934.4B × /64RIPE NCCGB6th Jan 2022
2a12:4400::/2934.4B × /64RIPE NCCSC2nd Nov 2021
2a12:4500::/2934.4B × /64RIPE NCCRU11th Nov 2021
2a12:4580::/2934.4B × /64RIPE NCCSC22nd Nov 2021
2a12:45c0::/2934.4B × /64RIPE NCCUS7th Jan 2022
2a12:46c0::/2934.4B × /64RIPE NCCRU7th Jan 2022
2a12:4780::/324.3B × /64RIPE NCCAT22nd Nov 2021
2a12:47c0::/2934.4B × /64RIPE NCCTR7th Jan 2022
2a12:4800::/2934.4B × /64RIPE NCCRU29th Oct 2021
2a12:480::/2934.4B × /64RIPE NCCRU18th Nov 2021
2a12:4840::/2934.4B × /64RIPE NCCDE27th Oct 2026
2a12:4880::/2934.4B × /64RIPE NCCDE22nd Nov 2021
2a12:4900::/2934.4B × /64RIPE NCCZA11th Nov 2021
2a12:4a00::/2934.4B × /64RIPE NCCSC5th Nov 2021
2a12:4a40::/2934.4B × /64RIPE NCCUA10th Jan 2022
2a12:4a80::/2934.4B × /64RIPE NCCRO22nd Nov 2021
2a12:4b40::/2934.4B × /64RIPE NCCCY10th Jan 2022
2a12:4b80::/2934.4B × /64RIPE NCCLB22nd Nov 2021
2a12:4c00::/2934.4B × /64RIPE NCCRU2nd Nov 2021
2a12:4e40::/2934.4B × /64RIPE NCCSC11th Jan 2022
2a12:4ec0::/2934.4B × /64RIPE NCCSC11th Jan 2022
2a12:4f40::/2934.4B × /64RIPE NCCSC11th Jan 2022
2a12:5000::/2934.4B × /64RIPE NCCNL28th Oct 2021
2a12:500::/2934.4B × /64RIPE NCCIE9th Nov 2021
2a12:5080::/2934.4B × /64RIPE NCCUZ23rd Nov 2021
2a12:50c0::/2934.4B × /64RIPE NCCGB11th Jan 2022
2a12:5100::/2934.4B × /64RIPE NCCNO12th Nov 2021
2a12:51c0::/324.3B × /64RIPE NCCAE17th Dec 2025
2a12:52c0::/2934.4B × /64RIPE NCCFR12th Jan 2022
2a12:5380::/2934.4B × /64RIPE NCCFR23rd Nov 2021
2a12:5400::/2934.4B × /64RIPE NCCSC2nd Nov 2021
2a12:540::/2934.4B × /64RIPE NCCUS13th Dec 2021
2a12:5500::/2934.4B × /64RIPE NCCRO12th Nov 2021
2a12:5580::/2934.4B × /64RIPE NCCRU23rd Nov 2021
2a12:5680::/2934.4B × /64RIPE NCCNL23rd Nov 2021
2a12:5700::/2934.4B × /64RIPE NCCRO12th Nov 2021