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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

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Countries with the most unannounced blocks, largest first.

Unannounced blocks in China

6,735 blocks match, ordered by prefix.

Allocated but unannounced blocks, 5151 to 5200 of 6735
Prefix	Addresses	Registry	Country	Allocated
2405:5a80::/32	4.3B × /64	APNIC	CN	18th May 2016
2405:5b80::/32	4.3B × /64	APNIC	CN	18th May 2016
2405:5c80::/32	4.3B × /64	APNIC	CN	18th May 2016
2405:5cc0::/32	4.3B × /64	APNIC	CN	8th Oct 2019
2405:5d40::/32	4.3B × /64	APNIC	CN	8th Oct 2019
2405:5d80::/32	4.3B × /64	APNIC	CN	18th May 2016
2405:5dc0::/32	4.3B × /64	APNIC	CN	8th Oct 2019
2405:5e80::/32	4.3B × /64	APNIC	CN	18th May 2016
2405:5f80::/32	4.3B × /64	APNIC	CN	18th May 2016
2405:6080::/32	4.3B × /64	APNIC	CN	18th May 2016
2405:6180::/32	4.3B × /64	APNIC	CN	18th May 2016
2405:6200::/32	4.3B × /64	APNIC	CN	23rd Nov 2010
2405:680::/32	4.3B × /64	APNIC	CN	9th May 2016
2405:6880::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:69c0::/32	4.3B × /64	APNIC	CN	17th Oct 2019
2405:6a80::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:6b80::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:6c80::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:6d80::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:6e80::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:6f80::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:7080::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:7180::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:7280::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:7380::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:7480::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:7580::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:7680::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:7780::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:780::/32	4.3B × /64	APNIC	CN	9th May 2016
2405:7880::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:7980::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:79c0::/32	4.3B × /64	APNIC	CN	13th Nov 2019
2405:7a80::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:7b80::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:7c80::/32	4.3B × /64	APNIC	CN	20th May 2016
2405:7d40::/32	4.3B × /64	APNIC	CN	14th Nov 2019
2405:7f40::/32	4.3B × /64	APNIC	CN	18th Nov 2019
2405:7fc0::/32	4.3B × /64	APNIC	CN	18th Nov 2019
2405:8480::/32	4.3B × /64	APNIC	CN	26th May 2016
2405:8580::/32	4.3B × /64	APNIC	CN	26th May 2016
2405:8680::/32	4.3B × /64	APNIC	CN	26th May 2016
2405:8780::/32	4.3B × /64	APNIC	CN	26th May 2016
2405:880::/32	4.3B × /64	APNIC	CN	9th May 2016
2405:8880::/32	4.3B × /64	APNIC	CN	26th May 2016
2405:8980::/32	4.3B × /64	APNIC	CN	26th May 2016
2405:8a80::/32	4.3B × /64	APNIC	CN	26th May 2016
2405:8ac0::/32	4.3B × /64	APNIC	CN	27th Nov 2019
2405:8b80::/32	4.3B × /64	APNIC	CN	26th May 2016
2405:8c80::/32	4.3B × /64	APNIC	CN	26th May 2016