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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

6,735 blocks match, ordered by prefix.

Allocated but unannounced blocks, 5251 to 5300 of 6735
Prefix	Addresses	Registry	Country	Allocated
2405:c380::/32	4.3B × /64	APNIC	CN	23rd Jun 2016
2405:c480::/32	4.3B × /64	APNIC	CN	23rd Jun 2016
2405:c500::/32	4.3B × /64	APNIC	CN	21st Nov 2012
2405:c580::/32	4.3B × /64	APNIC	CN	23rd Jun 2016
2405:c680::/32	4.3B × /64	APNIC	CN	23rd Jun 2016
2405:c780::/32	4.3B × /64	APNIC	CN	23rd Jun 2016
2405:c80::/32	4.3B × /64	APNIC	CN	9th May 2016
2405:c880::/32	4.3B × /64	APNIC	CN	23rd Jun 2016
2405:c980::/32	4.3B × /64	APNIC	CN	23rd Jun 2016
2405:ca80::/32	4.3B × /64	APNIC	CN	23rd Jun 2016
2405:cb80::/32	4.3B × /64	APNIC	CN	23rd Jun 2016
2405:cc80::/32	4.3B × /64	APNIC	CN	23rd Jun 2016
2405:cd80::/32	4.3B × /64	APNIC	CN	23rd Jun 2016
2405:ce80::/32	4.3B × /64	APNIC	CN	23rd Jun 2016
2405:d280::/32	4.3B × /64	APNIC	CN	24th Jun 2016
2405:d4c0::/32	4.3B × /64	APNIC	CN	19th Feb 2020
2405:d700::/32	4.3B × /64	APNIC	CN	28th Nov 2012
2405:d80::/32	4.3B × /64	APNIC	CN	9th May 2016
2405:df40::/32	4.3B × /64	APNIC	CN	4th Mar 2020
2405:e040::/32	4.3B × /64	APNIC	CN	5th Mar 2020
2405:e1c0::/32	4.3B × /64	APNIC	CN	6th Mar 2020
2405:e80::/32	4.3B × /64	APNIC	CN	9th May 2016
2405:ef40::/30	17.2B × /64	APNIC	CN	23rd Mar 2020
2405:f340::/32	4.3B × /64	APNIC	CN	30th Mar 2020
2405:f6c0::/32	4.3B × /64	APNIC	CN	31st Mar 2020
2405:f80::/32	4.3B × /64	APNIC	CN	9th May 2016
2405:fdc0::/32	4.3B × /64	APNIC	CN	9th Apr 2020
2406:1100::/32	4.3B × /64	APNIC	CN	16th Jan 2013
2406:1180::/32	4.3B × /64	APNIC	CN	29th Jul 2016
2406:1280::/32	4.3B × /64	APNIC	CN	29th Jul 2016
2406:1380::/32	4.3B × /64	APNIC	CN	29th Jul 2016
2406:1480::/32	4.3B × /64	APNIC	CN	29th Jul 2016
2406:1580::/32	4.3B × /64	APNIC	CN	29th Jul 2016
2406:15c0::/32	4.3B × /64	APNIC	CN	9th May 2020
2406:1680::/32	4.3B × /64	APNIC	CN	29th Jul 2016
2406:1780::/32	4.3B × /64	APNIC	CN	29th Jul 2016
2406:1880::/32	4.3B × /64	APNIC	CN	29th Jul 2016
2406:1980::/32	4.3B × /64	APNIC	CN	29th Jul 2016
2406:1a80::/32	4.3B × /64	APNIC	CN	29th Jul 2016
2406:1b80::/32	4.3B × /64	APNIC	CN	29th Jul 2016
2406:1c80::/32	4.3B × /64	APNIC	CN	29th Jul 2016
2406:1d80::/32	4.3B × /64	APNIC	CN	29th Jul 2016
2406:1e80::/32	4.3B × /64	APNIC	CN	29th Jul 2016
2406:1f80::/32	4.3B × /64	APNIC	CN	29th Jul 2016
2406:2080::/32	4.3B × /64	APNIC	CN	29th Jul 2016
2406:2640::/32	4.3B × /64	APNIC	CN	11th Jun 2020
2406:2780::/32	4.3B × /64	APNIC	CN	2nd Aug 2016
2406:2880::/32	4.3B × /64	APNIC	CN	2nd Aug 2016
2406:2980::/32	4.3B × /64	APNIC	CN	2nd Aug 2016
2406:2a80::/32	4.3B × /64	APNIC	CN	2nd Aug 2016