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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

299 blocks match, ordered by prefix.

Allocated but unannounced blocks, 201 to 250 of 299
PrefixAddressesRegistryCountryAllocated
2a0a:d080::/2934.4B × /64RIPE NCCCZ12th Dec 2016
2a0a:ddc0::/2934.4B × /64RIPE NCCCZ10th May 2017
2a0a:e4c0::/2934.4B × /64RIPE NCCCZ12th May 2017
2a0a:ea40::/2934.4B × /64RIPE NCCCZ15th May 2017
2a0a:f5c0::/324.3B × /64RIPE NCCCZ1st Jul 2020
2a0a:ff80::/324.3B × /64RIPE NCCCZ20th Dec 2016
2a0b:2fc0::/2934.4B × /64RIPE NCCCZ13th Jun 2017
2a0b:4280::/2934.4B × /64RIPE NCCCZ9th Jan 2017
2a0b:7300::/2934.4B × /64RIPE NCCCZ20th Oct 2016
2a0b:8d80::/2934.4B × /64RIPE NCCCZ23rd Jan 2017
2a0b:d880::/2934.4B × /64RIPE NCCCZ8th Feb 2017
2a0b:e840::/2934.4B × /64RIPE NCCCZ5th Sept 2017
2a0b:fc40::/2934.4B × /64RIPE NCCCZ14th Sept 2017
2a0c:28c0::/2934.4B × /64RIPE NCCCZ8th Mar 2024
2a0c:66c0::/324.3B × /64RIPE NCCCZ18th Apr 2018
2a0c:6840::/2934.4B × /64RIPE NCCCZ18th Apr 2018
2a0c:cf80::/2934.4B × /64RIPE NCCCZ19th Jan 2018
2a0c:ff40::/2934.4B × /64RIPE NCCCZ31st Jul 2018
2a0d:3140::/2934.4B × /64RIPE NCCCZ22nd Aug 2018
2a0d:4d00::/2934.4B × /64RIPE NCCCZ7th Apr 2026
2a0d:7640::/2934.4B × /64RIPE NCCCZ28th Nov 2022
2a0d:c00::/2934.4B × /64RIPE NCCCZ6th Oct 2017
2a0e:2740::/2934.4B × /64RIPE NCCCZ4th Jul 2019
2a0e:3c00::/2934.4B × /64RIPE NCCCZ9th Apr 2019
2a0e:6f80::/2934.4B × /64RIPE NCCCZ24th May 2019
2a0e:7680::/2934.4B × /64RIPE NCCCZ27th May 2019
2a0e:89c0::/2934.4B × /64RIPE NCCCZ30th Jul 2019
2a0e:8d40::/2934.4B × /64RIPE NCCCZ31st Jul 2019
2a0e:b640::/2934.4B × /64RIPE NCCCZ9th Aug 2019
2a0e:b6c0::/2934.4B × /64RIPE NCCCZ9th Aug 2019
2a0e:eb80::/2934.4B × /64RIPE NCCCZ13th Jun 2019
2a0f:9100::/2934.4B × /64RIPE NCCCZ13th Sept 2019
2a0f:c000::/2934.4B × /64RIPE NCCCZ30th Oct 2025
2a0f:d240::/324.3B × /64RIPE NCCCZ9th Dec 2019
2a10:2880::/324.3B × /64RIPE NCCCZ25th Feb 2020
2a10:2e40::/2934.4B × /64RIPE NCCCZ14th Apr 2020
2a10:8d80::/2934.4B × /64RIPE NCCCZ8th Dec 2020
2a10:9f40::/2934.4B × /64RIPE NCCCZ13th Feb 2026
2a11:dd40::/324.3B × /64RIPE NCCCZ10th Dec 2025
2a12:180::/2934.4B × /64RIPE NCCCZ11th Dec 2025
2a12:d640::/2934.4B × /64RIPE NCCCZ25th Apr 2022
2a12:e000::/2934.4B × /64RIPE NCCCZ30th Jun 2025
2a12:fe40::/2934.4B × /64RIPE NCCCZ1st Jun 2022
2a13:1180::/2934.4B × /64RIPE NCCCZ10th Aug 2022
2a13:2ac0::/2934.4B × /64RIPE NCCCZ11th Nov 2022
2a13:3180::/2934.4B × /64RIPE NCCCZ19th Aug 2022
2a13:9c40::/2934.4B × /64RIPE NCCCZ28th Jul 2023
2a13:ee80::/2934.4B × /64RIPE NCCCZ5th Apr 2023
2a14:1240::/2934.4B × /64RIPE NCCCZ4th Mar 2024
2a14:13c0::/2934.4B × /64RIPE NCCCZ6th Mar 2024