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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

2,614 blocks match, ordered by prefix.

Allocated but unannounced blocks, 1951 to 2000 of 2614
PrefixAddressesRegistryCountryAllocated
2a0a:dfc0::/324.3B × /64RIPE NCCGB11th May 2017
2a0a:e1c0::/2934.4B × /64RIPE NCCGB11th May 2017
2a0a:e480::/2934.4B × /64RIPE NCCGB14th Dec 2016
2a0a:e500::/324.3B × /64RIPE NCCGB6th Oct 2016
2a0a:e880::/2934.4B × /64RIPE NCCGB15th Dec 2016
2a0a:e940::/2934.4B × /64RIPE NCCGB21st Oct 2019
2a0a:ef80::/2934.4B × /64RIPE NCCGB15th Dec 2016
2a0a:f080::/2934.4B × /64RIPE NCCGB9th Jun 2020
2a0a:f3c0::/2934.4B × /64RIPE NCCGB18th May 2017
2a0a:f440::/2934.4B × /64RIPE NCCGB19th May 2017
2a0a:f4c0::/2934.4B × /64RIPE NCCGB19th May 2017
2a0a:fd80::/2934.4B × /64RIPE NCCGB20th Dec 2016
2a0b:1a40::/324.3B × /64RIPE NCCGB6th Jun 2017
2a0b:1c00::/2934.4B × /64RIPE NCCGB19th Aug 2016
2a0b:2440::/2934.4B × /64RIPE NCCGB9th Jun 2017
2a0b:2480::/324.3B × /64RIPE NCCGB2nd Jan 2017
2a0b:3400::/2934.4B × /64RIPE NCCGB22nd Aug 2016
2a0b:3740::/2934.4B × /64RIPE NCCGB15th Jun 2017
2a0b:5040::/2934.4B × /64RIPE NCCGB27th Jul 2026
2a0b:5140::/2934.4B × /64RIPE NCCGB26th Jun 2017
2a0b:54c0::/2934.4B × /64RIPE NCCGB4th Apr 2018
2a0b:5880::/2934.4B × /64RIPE NCCGB13th Jan 2017
2a0b:59c0::/2934.4B × /64RIPE NCCGB28th Jun 2017
2a0b:5b80::/2934.4B × /64RIPE NCCGB13th Jan 2017
2a0b:5c0::/2934.4B × /64RIPE NCCGB26th May 2017
2a0b:61c0::/324.3B × /64RIPE NCCGB30th Jun 2017
2a0b:6480::/2934.4B × /64RIPE NCCGB16th Jan 2017
2a0b:6680::/324.3B × /64RIPE NCCGB16th Jan 2017
2a0b:6740::/2934.4B × /64RIPE NCCGB21st Mar 2024
2a0b:6dc0::/2934.4B × /64RIPE NCCGB3rd May 2021
2a0b:7480::/324.3B × /64RIPE NCCGB18th Jan 2017
2a0b:7a40::/2934.4B × /64RIPE NCCGB27th May 2024
2a0b:7bc0::/324.3B × /64RIPE NCCGB13th Jul 2017
2a0b:8180::/2934.4B × /64RIPE NCCGB19th Jan 2017
2a0b:8280::/324.3B × /64RIPE NCCGB20th Jan 2017
2a0b:9500::/2934.4B × /64RIPE NCCGB3rd May 2023
2a0b:9f40::/2934.4B × /64RIPE NCCGB26th Jul 2017
2a0b:a580::/2934.4B × /64RIPE NCCGB27th Jan 2017
2a0b:a800::/2934.4B × /64RIPE NCCGB1st Apr 2019
2a0b:aa40::/324.3B × /64RIPE NCCGB1st Aug 2017
2a0b:c440::/324.3B × /64RIPE NCCGB11th Aug 2017
2a0b:c8c0::/2934.4B × /64RIPE NCCGB14th Aug 2017
2a0b:c940::/2934.4B × /64RIPE NCCGB20th Jan 2020
2a0b:cac0::/2934.4B × /64RIPE NCCGB16th Aug 2017
2a0b:cb40::/2934.4B × /64RIPE NCCGB20th Jan 2020
2a0b:cd00::/2934.4B × /64RIPE NCCGB26th Oct 2016
2a0b:d480::/2934.4B × /64RIPE NCCGB7th Feb 2017
2a0b:de40::/2934.4B × /64RIPE NCCGB25th Aug 2017
2a0b:e1c0::/2934.4B × /64RIPE NCCGB29th Aug 2017
2a0b:e500::/318.6B × /64RIPE NCCGB28th Oct 2016