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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 1701 to 1750 of 2614
PrefixAddressesRegistryCountryAllocated
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:d780::/2934.4B × /64RIPE NCCGB29th 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
2a04:ebc0::/2934.4B × /64RIPE NCCGB18th Jun 2014
2a04:ec00::/318.6B × /64RIPE NCCGB19th Jun 2014
2a04:ec0::/2934.4B × /64RIPE NCCGB18th Feb 2013
2a04:ed80::/2934.4B × /64RIPE NCCGB23rd Jun 2014
2a04:ef80::/2934.4B × /64RIPE NCCGB26th Jun 2014
2a04:f5c0::/2934.4B × /64RIPE NCCGB8th Jan 2019
2a04:f640::/2934.4B × /64RIPE NCCGB14th Jul 2014
2a04:fcc0::/2934.4B × /64RIPE NCCGB25th Jul 2014
2a04:fd00::/2934.4B × /64RIPE NCCGB28th Jul 2014
2a04:fe80::/2934.4B × /64RIPE NCCGB9th Apr 2015
2a05:1040::/2934.4B × /64RIPE NCCGB19th Aug 2014
2a05:11c0::/2934.4B × /64RIPE NCCGB19th Aug 2014
2a05:1c0::/2934.4B × /64RIPE NCCGB31st Jul 2014
2a05:1c80::/2934.4B × /64RIPE NCCGB1st Sept 2014
2a05:1d00::/2934.4B × /64RIPE NCCGB1st Sept 2014
2a05:2080::/2934.4B × /64RIPE NCCGB5th Sept 2014
2a05:2680::/2934.4B × /64RIPE NCCGB12th Sept 2014
2a05:280::/2934.4B × /64RIPE NCCGB13th Jun 2018
2a05:2bc0::/2934.4B × /64RIPE NCCGB19th Sept 2014
2a05:3140::/2934.4B × /64RIPE NCCGB26th Sept 2014
2a05:31c0::/2934.4B × /64RIPE NCCGB26th Sept 2014
2a05:3540::/2934.4B × /64RIPE NCCGB30th Sept 2014
2a05:3940::/318.6B × /64RIPE NCCGB6th Oct 2014
2a05:3a80::/2934.4B × /64RIPE NCCGB10th Jun 2025
2a05:4040::/2934.4B × /64RIPE NCCGB14th Oct 2014
2a05:5200::/2934.4B × /64RIPE NCCGB31st Oct 2014
2a05:5e80::/2934.4B × /64RIPE NCCGB12th Nov 2014
2a05:6880::/2934.4B × /64RIPE NCCGB21st Nov 2014
2a05:6b00::/2934.4B × /64RIPE NCCGB24th Nov 2014
2a05:6c00::/2934.4B × /64RIPE NCCGB2nd Jan 2026
2a05:6e40::/2934.4B × /64RIPE NCCGB8th Jun 2015
2a05:72c0::/2934.4B × /64RIPE NCCGB1st Dec 2014