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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Browse by registry

Browse by country

Countries with the most unannounced blocks, largest first.

Unannounced blocks in Austria

556 blocks match, ordered by prefix.

Allocated but unannounced blocks, 401 to 450 of 556
PrefixAddressesRegistryCountryAllocated
2a0a:b500::/2934.4B × /64RIPE NCCAT3rd Oct 2016
2a0a:cf80::/2934.4B × /64RIPE NCCAT8th Jun 2020
2a0b:1900::/2934.4B × /64RIPE NCCAT12th Oct 2016
2a0b:2600::/2934.4B × /64RIPE NCCAT8th Sept 2016
2a0b:49c0::/2934.4B × /64RIPE NCCAT22nd Jun 2017
2a0b:5500::/2934.4B × /64RIPE NCCAT18th Oct 2016
2a0b:5700::/2934.4B × /64RIPE NCCAT18th Oct 2016
2a0b:7c00::/324.3B × /64RIPE NCCAT23rd Aug 2016
2a0b:a1c0::/2934.4B × /64RIPE NCCAT10th Jun 2020
2a0b:d4c0::/2934.4B × /64RIPE NCCAT21st Aug 2017
2a0b:d80::/2934.4B × /64RIPE NCCAT20th Apr 2026
2a0b:de80::/2934.4B × /64RIPE NCCAT9th Feb 2017
2a0c:18c0::/324.3B × /64RIPE NCCAT22nd Mar 2018
2a0c:1980::/324.3B × /64RIPE NCCAT19th Dec 2017
2a0c:2b40::/2934.4B × /64RIPE NCCAT22nd Jun 2020
2a0c:2d00::/2934.4B × /64RIPE NCCAT8th Nov 2017
2a0c:53c0::/2934.4B × /64RIPE NCCAT11th Apr 2018
2a0c:7380::/2934.4B × /64RIPE NCCAT8th Jan 2018
2a0c:b040::/2934.4B × /64RIPE NCCAT14th May 2018
2a0c:e5c0::/2934.4B × /64RIPE NCCAT23rd Jul 2018
2a0c:fb00::/2934.4B × /64RIPE NCCAT24th Jul 2020
2a0d:1280::/2934.4B × /64RIPE NCCAT29th Jan 2018
2a0d:15c0::/324.3B × /64RIPE NCCAT8th Aug 2018
2a0d:4740::/2934.4B × /64RIPE NCCAT30th Aug 2018
2a0d:5280::/2934.4B × /64RIPE NCCAT8th Feb 2018
2a0d:740::/2934.4B × /64RIPE NCCAT2nd Aug 2018
2a0d:c900::/2934.4B × /64RIPE NCCAT13th Dec 2017
2a0d:cd80::/2934.4B × /64RIPE NCCAT5th Mar 2018
2a0d:ee80::/324.3B × /64RIPE NCCAT8th Mar 2018
2a0e:1640::/2934.4B × /64RIPE NCCAT27th Jun 2019
2a0e:1800::/2934.4B × /64RIPE NCCAT4th Apr 2019
2a0e:2a00::/2934.4B × /64RIPE NCCAT11th Apr 2019
2a0e:8500::/2934.4B × /64RIPE NCCAT1st Feb 2022
2a0e:c500::/2934.4B × /64RIPE NCCAT2nd May 2019
2a0f:3800::/2934.4B × /64RIPE NCCAT29th Aug 2019
2a0f:40c0::/2934.4B × /64RIPE NCCAT31st Oct 2019
2a0f:7900::/2934.4B × /64RIPE NCCAT28th Oct 2025
2a0f:bac0::/2934.4B × /64RIPE NCCAT25th Nov 2019
2a0f:d040::/324.3B × /64RIPE NCCAT6th Dec 2019
2a0f:f080::/2934.4B × /64RIPE NCCAT17th Oct 2019
2a10:1000::/2934.4B × /64RIPE NCCAT27th Jan 2020
2a10:3f40::/2934.4B × /64RIPE NCCAT29th Apr 2020
2a10:58c0::/2934.4B × /64RIPE NCCAT11th Feb 2026
2a10:6c80::/2934.4B × /64RIPE NCCAT22nd Apr 2020
2a10:7c80::/2934.4B × /64RIPE NCCAT28th Apr 2020
2a10:8bc0::/2934.4B × /64RIPE NCCAT11th Feb 2021
2a10:d40::/2934.4B × /64RIPE NCCAT12th Mar 2020
2a10:d540::/2934.4B × /64RIPE NCCAT14th Apr 2021
2a10:e9c0::/2934.4B × /64RIPE NCCAT28th Apr 2021
2a12:3980::/2934.4B × /64RIPE NCCAT16th Dec 2025