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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 the most unannounced blocks, largest first.

Unannounced blocks

85,041 blocks match, ordered by prefix.

Allocated but unannounced blocks, 75201 to 75250 of 85041
PrefixAddressesRegistryCountryAllocated
2a0f:3d00::/2934.4B × /64RIPE NCCCH10th Sept 2019
2a0f:3d40::/2934.4B × /64RIPE NCCDE30th Oct 2019
2a0f:3e40::/2934.4B × /64RIPE NCCSE31st Oct 2019
2a0f:3ec0::/2934.4B × /64RIPE NCCKR22nd Oct 2025
2a0f:3f40::/2934.4B × /64RIPE NCCNL22nd Oct 2025
2a0f:3fc0::/2934.4B × /64RIPE NCCDE31st Oct 2019
2a0f:400::/2934.4B × /64RIPE NCCUA30th Aug 2019
2a0f:4040::/2934.4B × /64RIPE NCCSC23rd Oct 2025
2a0f:4080::/2934.4B × /64RIPE NCCFI25th Sept 2019
2a0f:40::/2934.4B × /64RIPE NCCNL22nd Oct 2019
2a0f:40c0::/2934.4B × /64RIPE NCCAT31st Oct 2019
2a0f:4100::/2934.4B × /64RIPE NCCUA25th Apr 2022
2a0f:41c0::/2934.4B × /64RIPE NCCUA23rd Oct 2025
2a0f:4380::/2934.4B × /64RIPE NCCRU1st Feb 2022
2a0f:43c0::/324.3B × /64RIPE NCCIT1st Nov 2019
2a0f:440::/2934.4B × /64RIPE NCCSE23rd Oct 2019
2a0f:45c0::/2934.4B × /64RIPE NCCIT1st Nov 2019
2a0f:4600::/2934.4B × /64RIPE NCCNL4th Sept 2019
2a0f:46c0::/2934.4B × /64RIPE NCCTR1st Nov 2019
2a0f:4740::/2934.4B × /64RIPE NCCIT1st Nov 2019
2a0f:47c0::/2934.4B × /64RIPE NCCUS1st Nov 2019
2a0f:4880::/2934.4B × /64RIPE NCCNL26th Sept 2019
2a0f:4900::/2934.4B × /64RIPE NCCBE11th Sept 2019
2a0f:4940::/324.3B × /64RIPE NCCPL1st Nov 2019
2a0f:49c0::/2934.4B × /64RIPE NCCBE1st Nov 2019
2a0f:4a80::/2934.4B × /64RIPE NCCMH6th Feb 2026
2a0f:4b00::/2934.4B × /64RIPE NCCNL11th Sept 2019
2a0f:4b80::/2934.4B × /64RIPE NCCUA26th Sept 2019
2a0f:4c80::/2934.4B × /64RIPE NCCCH26th Sept 2019
2a0f:4cc0::/2934.4B × /64RIPE NCCUS4th Nov 2019
2a0f:4d00::/2934.4B × /64RIPE NCCTR29th Sept 2022
2a0f:4d40::/2934.4B × /64RIPE NCCLU5th Nov 2019
2a0f:4dc0::/2934.4B × /64RIPE NCCIE5th Nov 2019
2a0f:4e00::/2934.4B × /64RIPE NCCBG4th Sept 2019
2a0f:4ec0::/2934.4B × /64RIPE NCCES5th Nov 2019
2a0f:4f40::/2934.4B × /64RIPE NCCRO5th Nov 2019
2a0f:4fc0::/2934.4B × /64RIPE NCCSI5th Nov 2019
2a0f:5040::/2934.4B × /64RIPE NCCIR5th Nov 2019
2a0f:50c0::/2934.4B × /64RIPE NCCSE5th Nov 2019
2a0f:51c0::/2934.4B × /64RIPE NCCIR5th Nov 2019
2a0f:5300::/2934.4B × /64RIPE NCCDE11th Sept 2019
2a0f:5340::/2934.4B × /64RIPE NCCLU6th Nov 2019
2a0f:5400::/2934.4B × /64RIPE NCCES2nd Sept 2019
2a0f:5480::/2934.4B × /64RIPE NCCNL27th Sept 2019
2a0f:54c0::/2934.4B × /64RIPE NCCDE23rd Oct 2025
2a0f:55c0::/2934.4B × /64RIPE NCCRO6th Nov 2019
2a0f:5640::/2934.4B × /64RIPE NCCHU6th Nov 2019
2a0f:56c0::/2934.4B × /64RIPE NCCRO6th Nov 2019
2a0f:5740::/2934.4B × /64RIPE NCCIR24th Oct 2025
2a0f:5780::/2934.4B × /64RIPE NCCPL27th Sept 2019