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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 20151 to 20200 of 24891
PrefixAddressesRegistryCountryAllocated
2a12:2400::/2934.4B × /64RIPE NCCSC2nd Nov 2021
2a12:240::/2934.4B × /64RIPE NCCSC10th Dec 2021
2a12:2440::/2934.4B × /64RIPE NCCKZ23rd Dec 2021
2a12:2480::/2934.4B × /64RIPE NCCSC19th Nov 2021
2a12:24c0::/2934.4B × /64RIPE NCCRU23rd Dec 2021
2a12:25c0::/2934.4B × /64RIPE NCCRU23rd Dec 2021
2a12:2600::/2934.4B × /64RIPE NCCIR4th Nov 2021
2a12:2640::/2934.4B × /64RIPE NCCLB27th Dec 2021
2a12:2740::/2934.4B × /64RIPE NCCRU27th Dec 2021
2a12:27c0::/2934.4B × /64RIPE NCCNO26th Oct 2026
2a12:2880::/2934.4B × /64RIPE NCCSC19th Nov 2021
2a12:2900::/2934.4B × /64RIPE NCCNL10th Nov 2021
2a12:2980::/2934.4B × /64RIPE NCCSC22nd Nov 2021
2a12:29c0::/2934.4B × /64RIPE NCCTR27th Dec 2021
2a12:2a80::/2934.4B × /64RIPE NCCNL22nd Nov 2021
2a12:2ac0::/2934.4B × /64RIPE NCCKZ28th Dec 2021
2a12:2b00::/2934.4B × /64RIPE NCCSC11th Nov 2021
2a12:2c00::/2934.4B × /64RIPE NCCSC2nd Nov 2021
2a12:2c0::/2934.4B × /64RIPE NCCRU10th Dec 2021
2a12:2c40::/2934.4B × /64RIPE NCCRU28th Dec 2021
2a12:2d00::/2934.4B × /64RIPE NCCSC11th Nov 2021
2a12:2d40::/2934.4B × /64RIPE NCCRU28th Dec 2021
2a12:2dc0::/2934.4B × /64RIPE NCCSC28th Dec 2021
2a12:2e00::/2934.4B × /64RIPE NCCIR4th Nov 2021
2a12:2e40::/2934.4B × /64RIPE NCCRU28th Dec 2021
2a12:2ec0::/2934.4B × /64RIPE NCCRU28th Dec 2021
2a12:2f40::/2934.4B × /64RIPE NCCDE28th Dec 2021
2a12:2f80::/2934.4B × /64RIPE NCCHK22nd Nov 2021
2a12:300::/2934.4B × /64RIPE NCCUA9th Nov 2021
2a12:3080::/2934.4B × /64RIPE NCCSC22nd Nov 2021
2a12:30c0::/2934.4B × /64RIPE NCCDE28th Dec 2021
2a12:3180::/2934.4B × /64RIPE NCCSC22nd Nov 2021
2a12:31c0::/2934.4B × /64RIPE NCCSC28th Dec 2021
2a12:3280::/324.3B × /64RIPE NCCAM22nd Nov 2021
2a12:3340::/2934.4B × /64RIPE NCCSC28th Dec 2021
2a12:3380::/2934.4B × /64RIPE NCCLT22nd Nov 2021
2a12:3480::/2934.4B × /64RIPE NCCDE22nd Nov 2021
2a12:34c0::/2934.4B × /64RIPE NCCRU30th Dec 2021
2a12:3500::/2934.4B × /64RIPE NCCSC11th Nov 2021
2a12:3640::/2934.4B × /64RIPE NCCIR26th Oct 2026
2a12:3680::/324.3B × /64RIPE NCCGB22nd Nov 2021
2a12:36c0::/2934.4B × /64RIPE NCCNL3rd Jan 2022
2a12:3740::/2934.4B × /64RIPE NCCRU3rd Jan 2022
2a12:3780::/2934.4B × /64RIPE NCCRU22nd Nov 2021
2a12:37c0::/2934.4B × /64RIPE NCCIT23rd Feb 2026
2a12:3800::/2934.4B × /64RIPE NCCRU29th Oct 2021
2a12:3840::/2934.4B × /64RIPE NCCIR4th Jan 2022
2a12:3880::/324.3B × /64RIPE NCCKZ22nd Nov 2021
2a12:3900::/2934.4B × /64RIPE NCCLT11th Nov 2021
2a12:3980::/2934.4B × /64RIPE NCCAT16th Dec 2025