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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 1651 to 1700 of 2577
PrefixAddressesRegistryCountryAllocated
2a04:21c0::/2934.4B × /64RIPE NCCGB3rd Apr 2013
2a04:2840::/2934.4B × /64RIPE NCCGB12th Apr 2013
2a04:3440::/2934.4B × /64RIPE NCCGB25th May 2021
2a04:36c0::/2934.4B × /64RIPE NCCGB16th May 2013
2a04:4100::/2934.4B × /64RIPE NCCGB18th Jun 2013
2a04:47c0::/2934.4B × /64RIPE NCCGB2nd Jul 2013
2a04:50c0::/2934.4B × /64RIPE NCCGB13th Apr 2015
2a04:5240::/2934.4B × /64RIPE NCCGB23rd Jul 2013
2a04:5580::/2934.4B × /64RIPE NCCGB1st Aug 2013
2a04:5ac0::/2934.4B × /64RIPE NCCGB19th Aug 2013
2a04:5c40::/2934.4B × /64RIPE NCCGB21st Aug 2013
2a04:6040::/2934.4B × /64RIPE NCCGB30th Aug 2013
2a04:6240::/2934.4B × /64RIPE NCCGB9th Sept 2013
2a04:6300::/2934.4B × /64RIPE NCCGB11th Sept 2013
2a04:6580::/324.3B × /64RIPE NCCGB11th Aug 2026
2a04:6840::/2934.4B × /64RIPE NCCGB24th Sept 2013
2a04:6940::/2934.4B × /64RIPE NCCGB25th Sept 2013
2a04:70c0::/2934.4B × /64RIPE NCCGB10th Oct 2013
2a04:7340::/2934.4B × /64RIPE NCCGB15th Oct 2013
2a04:7380::/2934.4B × /64RIPE NCCGB15th Oct 2013
2a04:7c0::/2934.4B × /64RIPE NCCGB29th Jan 2013
2a04:7fc0::/2934.4B × /64RIPE NCCGB6th Nov 2013
2a04:8d80::/2934.4B × /64RIPE NCCGB29th Nov 2013
2a04:9340::/2934.4B × /64RIPE NCCGB13th Dec 2013
2a04:9480::/2934.4B × /64RIPE NCCGB16th Dec 2013
2a04:9700::/2934.4B × /64RIPE NCCGB23rd Dec 2013
2a04:98c0::/2934.4B × /64RIPE NCCGB14th Jun 2021
2a04:ab00::/2934.4B × /64RIPE NCCGB4th Feb 2014
2a04:ac0::/2934.4B × /64RIPE NCCGB7th Mar 2016
2a04:b680::/2934.4B × /64RIPE NCCGB26th Feb 2014
2a04:b6c0::/2934.4B × /64RIPE NCCGB27th Feb 2014
2a04:b780::/2934.4B × /64RIPE NCCGB28th Feb 2014
2a04:bbc0::/2934.4B × /64RIPE NCCGB7th Mar 2014
2a04:c040::/2934.4B × /64RIPE NCCGB9th Sept 2020
2a04:c380::/2934.4B × /64RIPE NCCGB9th Jan 2019
2a04:c540::/2934.4B × /64RIPE NCCGB27th Mar 2014
2a04:c700::/2934.4B × /64RIPE NCCGB1st Apr 2015
2a04:c8c0::/2934.4B × /64RIPE NCCGB13th May 2025
2a04:ca00::/2934.4B × /64RIPE NCCGB3rd Apr 2014
2a04:ce80::/2934.4B × /64RIPE NCCGB11th Apr 2014
2a04:cf00::/2934.4B × /64RIPE NCCGB1st Apr 2015
2a04:d440::/2934.4B × /64RIPE NCCGB24th Apr 2014
2a04:d4c0::/2934.4B × /64RIPE NCCGB24th Apr 2014
2a04:d600::/2934.4B × /64RIPE NCCGB28th Apr 2014
2a04:d8c0::/2934.4B × /64RIPE NCCGB30th Apr 2014
2a04:da80::/2934.4B × /64RIPE NCCGB5th May 2014
2a04:e000::/2934.4B × /64RIPE NCCGB20th May 2014
2a04:e140::/2934.4B × /64RIPE NCCGB22nd May 2014
2a04:e780::/2934.4B × /64RIPE NCCGB6th Jun 2014
2a04:e9c0::/2934.4B × /64RIPE NCCGB23rd Sept 2025