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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 5551 to 5600 of 6735
Prefix	Addresses	Registry	Country	Allocated
2407:6040::/32	4.3B × /64	APNIC	CN	12th May 2021
2407:6580::/32	4.3B × /64	APNIC	CN	29th Sept 2016
2407:7680::/32	4.3B × /64	APNIC	CN	8th Oct 2016
2407:7780::/32	4.3B × /64	APNIC	CN	8th Oct 2016
2407:7880::/32	4.3B × /64	APNIC	CN	8th Oct 2016
2407:7980::/32	4.3B × /64	APNIC	CN	9th Oct 2016
2407:7c80::/32	4.3B × /64	APNIC	CN	10th Oct 2016
2407:7d80::/32	4.3B × /64	APNIC	CN	10th Oct 2016
2407:7e80::/32	4.3B × /64	APNIC	CN	10th Oct 2016
2407:8880::/32	4.3B × /64	APNIC	CN	14th Oct 2016
2407:8b80::/32	4.3B × /64	APNIC	CN	17th Oct 2016
2407:9080::/32	4.3B × /64	APNIC	CN	18th Oct 2016
2407:9180::/32	4.3B × /64	APNIC	CN	18th Oct 2016
2407:94c0::/32	4.3B × /64	APNIC	CN	21st Jun 2021
2407:9680::/32	4.3B × /64	APNIC	CN	19th Oct 2016
2407:9980::/32	4.3B × /64	APNIC	CN	20th Oct 2016
2407:9b40::/32	4.3B × /64	APNIC	CN	28th Jun 2021
2407:9bc0::/32	4.3B × /64	APNIC	CN	29th Jun 2021
2407:9f80::/32	4.3B × /64	APNIC	CN	26th Oct 2016
2407:a040::/32	4.3B × /64	APNIC	CN	2nd Jul 2021
2407:a640::/32	4.3B × /64	APNIC	CN	13th Jul 2021
2407:a7c0::/32	4.3B × /64	APNIC	CN	15th Jul 2021
2407:a880::/32	4.3B × /64	APNIC	CN	31st Oct 2016
2407:a940::/32	4.3B × /64	APNIC	CN	19th Jul 2021
2407:af80::/32	4.3B × /64	APNIC	CN	2nd Nov 2016
2407:b080::/32	4.3B × /64	APNIC	CN	2nd Nov 2016
2407:b180::/32	4.3B × /64	APNIC	CN	2nd Nov 2016
2407:b280::/32	4.3B × /64	APNIC	CN	2nd Nov 2016
2407:b580::/32	4.3B × /64	APNIC	CN	3rd Nov 2016
2407:b680::/32	4.3B × /64	APNIC	CN	3rd Nov 2016
2407:b780::/32	4.3B × /64	APNIC	CN	3rd Nov 2016
2407:b880::/32	4.3B × /64	APNIC	CN	3rd Nov 2016
2407:b980::/32	4.3B × /64	APNIC	CN	3rd Nov 2016
2407:ba00::/32	4.3B × /64	APNIC	CN	15th Mar 2011
2407:ba80::/32	4.3B × /64	APNIC	CN	3rd Nov 2016
2407:bb80::/32	4.3B × /64	APNIC	CN	3rd Nov 2016
2407:bc80::/32	4.3B × /64	APNIC	CN	3rd Nov 2016
2407:bd80::/32	4.3B × /64	APNIC	CN	3rd Nov 2016
2407:bdc0::/32	4.3B × /64	APNIC	CN	5th Aug 2021
2407:be80::/32	4.3B × /64	APNIC	CN	3rd Nov 2016
2407:bf80::/32	4.3B × /64	APNIC	CN	3rd Nov 2016
2407:c380::/32	4.3B × /64	APNIC	CN	4th Nov 2016
2407:c400::/32	4.3B × /64	APNIC	CN	8th Mar 2010
2407:c480::/32	4.3B × /64	APNIC	CN	4th Nov 2016
2407:c580::/32	4.3B × /64	APNIC	CN	4th Nov 2016
2407:c680::/32	4.3B × /64	APNIC	CN	4th Nov 2016
2407:c780::/32	4.3B × /64	APNIC	CN	4th Nov 2016
2407:c880::/32	4.3B × /64	APNIC	CN	4th Nov 2016
2407:c900::/32	4.3B × /64	APNIC	CN	21st Aug 2013
2407:c980::/32	4.3B × /64	APNIC	CN	4th Nov 2016