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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

85,310 blocks match, ordered by prefix.

Allocated but unannounced blocks, 54001 to 54050 of 85310
Prefix	Addresses	Registry	Country	Allocated
2401:3560::/32	4.3B × /64	APNIC	VN	8th Sept 2023
2401:35a0::/32	4.3B × /64	APNIC	VN	12th Sept 2023
2401:35c0::/32	4.3B × /64	APNIC	MM	2nd Jun 2017
2401:35e0::/32	4.3B × /64	APNIC	VN	12th Sept 2023
2401:360::/32	4.3B × /64	APNIC	HK	26th May 2023
2401:3640::/32	4.3B × /64	APNIC	CN	2nd Jun 2017
2401:3680::/32	4.3B × /64	APNIC	HK	16th Jul 2014
2401:36c0::/32	4.3B × /64	APNIC	HK	2nd Jun 2017
2401:3720::/32	4.3B × /64	APNIC	VN	12th Sept 2023
2401:3740::/32	4.3B × /64	APNIC	SG	5th Jun 2017
2401:3780::/32	4.3B × /64	APNIC	CN	16th Jul 2014
2401:37c0::/32	4.3B × /64	APNIC	HK	6th Jun 2017
2401:380::/32	4.3B × /64	APNIC	AU	26th May 2014
2401:3820::/32	4.3B × /64	APNIC	VN	12th Sept 2023
2401:3840::/32	4.3B × /64	APNIC	NZ	6th Jun 2017
2401:3860::/32	4.3B × /64	APNIC	IN	12th Sept 2023
2401:38a0::/32	4.3B × /64	APNIC	VN	13th Sept 2023
2401:38e0::/32	4.3B × /64	APNIC	MY	15th Sept 2023
2401:3940::/32	4.3B × /64	APNIC	AU	6th Jun 2017
2401:39c0::/32	4.3B × /64	APNIC	HK	6th Jun 2017
2401:3a00::/32	4.3B × /64	APNIC	CN	6th Apr 2010
2401:3a40::/32	4.3B × /64	APNIC	AU	6th Jun 2017
2401:3aa0::/32	4.3B × /64	APNIC	JP	19th Sept 2023
2401:3b00::/32	4.3B × /64	APNIC	JP	17th Jun 2011
2401:3b60::/32	4.3B × /64	APNIC	TW	22nd Sept 2023
2401:3ba0::/32	4.3B × /64	APNIC	TW	22nd Sept 2023
2401:3c20::/32	4.3B × /64	APNIC	CN	22nd Sept 2023
2401:3c40::/32	4.3B × /64	APNIC	AU	6th Jun 2017
2401:3ca0::/32	4.3B × /64	APNIC	HK	25th Sept 2023
2401:3ce0::/32	4.3B × /64	APNIC	IN	26th Sept 2023
2401:3d20::/32	4.3B × /64	APNIC	MY	27th Sept 2023
2401:3d40::/32	4.3B × /64	APNIC	AU	6th Jun 2017
2401:3d60::/32	4.3B × /64	APNIC	VN	27th Sept 2023
2401:3da0::/32	4.3B × /64	APNIC	VN	28th Sept 2023
2401:3dc0::/32	4.3B × /64	APNIC	AU	6th Jun 2017
2401:3de0::/32	4.3B × /64	APNIC	VN	28th Sept 2023
2401:3e00::/32	4.3B × /64	APNIC	KH	6th Apr 2010
2401:3e20::/32	4.3B × /64	APNIC	VN	28th Sept 2023
2401:3e40::/32	4.3B × /64	APNIC	HK	6th Jun 2017
2401:3e60::/32	4.3B × /64	APNIC	VN	28th Sept 2023
2401:3ea0::/32	4.3B × /64	APNIC	VN	28th Sept 2023
2401:3ec0::/32	4.3B × /64	APNIC	SG	6th Jun 2017
2401:3ee0::/32	4.3B × /64	APNIC	VN	28th Sept 2023
2401:3f40::/32	4.3B × /64	APNIC	TW	6th Jun 2017
2401:3fc0::/32	4.3B × /64	APNIC	BD	6th Jun 2017
2401:3fe0::/32	4.3B × /64	APNIC	IN	29th Sept 2023
2401:4000::/32	4.3B × /64	APNIC	KR	16th Mar 2007
2401:4060::/32	4.3B × /64	APNIC	HK	29th Sept 2023
2401:4080::/32	4.3B × /64	APNIC	CN	22nd Jul 2014
2401:40c0::/32	4.3B × /64	APNIC	PH	6th Jun 2017