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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Unannounced blocks in United Kingdom

2,577 blocks match, ordered by prefix.

Allocated but unannounced blocks, 2201 to 2250 of 2577
PrefixAddressesRegistryCountryAllocated
2a13:7f40::/324.3B × /64RIPE NCCGB25th Mar 2026
2a13:80c0::/2934.4B × /64RIPE NCCGB14th Jun 2023
2a13:8400::/324.3B × /64RIPE NCCGB20th Jan 2023
2a13:8940::/2934.4B × /64RIPE NCCGB4th Jul 2023
2a13:8e80::/2934.4B × /64RIPE NCCGB24th Feb 2023
2a13:92c0::/2934.4B × /64RIPE NCCGB17th Jul 2023
2a13:a800::/2934.4B × /64RIPE NCCGB18th Jan 2023
2a13:a840::/2934.4B × /64RIPE NCCGB10th Aug 2023
2a13:ab40::/324.3B × /64RIPE NCCGB14th Aug 2023
2a13:ab80::/324.3B × /64RIPE NCCGB3rd Mar 2023
2a13:ac0::/2934.4B × /64RIPE NCCGB19th Oct 2022
2a13:b5c0::/2934.4B × /64RIPE NCCGB23rd Aug 2023
2a13:bb00::/2934.4B × /64RIPE NCCGB13th Feb 2023
2a13:c980::/324.3B × /64RIPE NCCGB17th Mar 2023
2a13:cb00::/2934.4B × /64RIPE NCCGB15th Feb 2023
2a13:d4c0::/2934.4B × /64RIPE NCCGB6th Sept 2023
2a13:d540::/324.3B × /64RIPE NCCGB7th Sept 2023
2a13:d5c0::/2934.4B × /64RIPE NCCGB7th Sept 2023
2a13:db80::/2934.4B × /64RIPE NCCGB27th Mar 2023
2a13:e540::/2934.4B × /64RIPE NCCGB20th Sept 2023
2a13:e680::/2934.4B × /64RIPE NCCGB31st Mar 2023
2a13:e7c0::/2934.4B × /64RIPE NCCGB21st Sept 2023
2a13:e840::/2934.4B × /64RIPE NCCGB21st Sept 2023
2a13:ecc0::/2934.4B × /64RIPE NCCGB22nd Sept 2023
2a13:f240::/2934.4B × /64RIPE NCCGB27th Sept 2023
2a13:ff40::/2934.4B × /64RIPE NCCGB10th Oct 2023
2a14:1340::/2934.4B × /64RIPE NCCGB6th Mar 2024
2a14:33c0::/2934.4B × /64RIPE NCCGB4th Apr 2024
2a14:3b80::/2934.4B × /64RIPE NCCGB23rd Jun 2026
2a14:3c0::/2934.4B × /64RIPE NCCGB14th Feb 2024
2a14:3d80::/2934.4B × /64RIPE NCCGB23rd Jun 2026
2a14:4180::/2934.4B × /64RIPE NCCGB18th Dec 2023
2a14:4dc0::/324.3B × /64RIPE NCCGB15th May 2024
2a14:4f00::/2934.4B × /64RIPE NCCGB16th Nov 2023
2a14:6cc0::/2934.4B × /64RIPE NCCGB18th Jun 2024
2a14:7140::/2934.4B × /64RIPE NCCGB26th Jun 2024
2a14:75c0::/2934.4B × /64RIPE NCCGB3rd Jul 2024
2a14:8580::/2934.4B × /64RIPE NCCGB14th Feb 2025
2a14:8c0::/2934.4B × /64RIPE NCCGB20th Feb 2024
2a14:a500::/2934.4B × /64RIPE NCCGB8th Jan 2025
2a14:bd80::/324.3B × /64RIPE NCCGB13th Mar 2025
2a14:c280::/324.3B × /64RIPE NCCGB17th Mar 2025
2a14:cd80::/2934.4B × /64RIPE NCCGB24th Mar 2025
31.14.102.0/24256RIPE NCCGB18th Apr 2011
31.28.66.0/24256RIPE NCCGB23rd Feb 2011
31.28.74.0/24256RIPE NCCGB23rd Feb 2011
31.71.0.0/1665.5kRIPE NCCGB25th Nov 2010
31.72.0.0/14262kRIPE NCCGB25th Nov 2010
31.78.0.0/15131kRIPE NCCGB25th Nov 2010
31.99.153.0/24256RIPE NCCGB25th Nov 2010