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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

85,346 blocks match, ordered by prefix.

Allocated but unannounced blocks, 53901 to 53950 of 85346
Prefix	Addresses	Registry	Country	Allocated
2401:1::/32	4.3B × /64	APNIC	PK	6th Nov 2012
2401:1a00::/32	4.3B × /64	APNIC	IN	29th Mar 2010
2401:1a20::/32	4.3B × /64	APNIC	VN	18th Jul 2023
2401:1a40::/32	4.3B × /64	APNIC	CN	4th May 2017
2401:1aa0::/32	4.3B × /64	APNIC	NZ	19th Jul 2023
2401:1ac0::/32	4.3B × /64	APNIC	CN	4th May 2017
2401:1b60::/32	4.3B × /64	APNIC	PH	19th Jul 2023
2401:1b80::/32	4.3B × /64	APNIC	AU	13th Jun 2014
2401:1ba0::/32	4.3B × /64	APNIC	ID	20th Jul 2023
2401:1bc0::/32	4.3B × /64	APNIC	PK	5th May 2017
2401:1be0::/32	4.3B × /64	APNIC	AU	21st Jul 2023
2401:1c0::/32	4.3B × /64	APNIC	CN	21st Apr 2017
2401:1c20::/32	4.3B × /64	APNIC	BD	21st Jul 2023
2401:1c40::/32	4.3B × /64	APNIC	VN	5th May 2017
2401:1c60::/32	4.3B × /64	APNIC	CN	24th Jul 2023
2401:1ca0::/32	4.3B × /64	APNIC	VN	24th Jul 2023
2401:1cc0::/32	4.3B × /64	APNIC	VN	5th May 2017
2401:1ce0::/32	4.3B × /64	APNIC	CN	24th Jul 2023
2401:1d60::/32	4.3B × /64	APNIC	VN	25th Jul 2023
2401:1da0::/32	4.3B × /64	APNIC	CN	26th Jul 2023
2401:1dc0::/32	4.3B × /64	APNIC	CN	5th May 2017
2401:1de0::/32	4.3B × /64	APNIC	CN	28th Jul 2023
2401:1e00::/32	4.3B × /64	APNIC	CN	29th Mar 2010
2401:1e0::/32	4.3B × /64	APNIC	IN	22nd May 2023
2401:1e40::/32	4.3B × /64	APNIC	BD	8th May 2017
2401:1e60::/32	4.3B × /64	APNIC	VN	1st Aug 2023
2401:1e80::/32	4.3B × /64	APNIC	AU	16th Jun 2014
2401:1ea0::/32	4.3B × /64	APNIC	VN	1st Aug 2023
2401:1ec0::/32	4.3B × /64	APNIC	CN	10th May 2017
2401:1ee0::/32	4.3B × /64	APNIC	IN	1st Aug 2023
2401:1f20::/32	4.3B × /64	APNIC	JP	2nd Aug 2023
2401:1f40::/32	4.3B × /64	APNIC	CN	10th May 2017
2401:1f60::/32	4.3B × /64	APNIC	JP	2nd Aug 2023
2401:1fa0::/32	4.3B × /64	APNIC	ID	2nd Aug 2023
2401:1fc0::/32	4.3B × /64	APNIC	ID	10th May 2017
2401:2001::/32	4.3B × /64	APNIC	AU	3rd Aug 2011
2401:2020::/32	4.3B × /64	APNIC	SG	3rd Aug 2023
2401:2040::/32	4.3B × /64	APNIC	CN	11th May 2017
2401:2080::/32	4.3B × /64	APNIC	CN	17th Jun 2014
2401:20a0::/32	4.3B × /64	APNIC	PK	5th Aug 2023
2401:2100::/32	4.3B × /64	APNIC	JP	14th Jun 2011
2401:2140::/32	4.3B × /64	APNIC	BD	12th May 2017
2401:2160::/32	4.3B × /64	APNIC	VN	7th Aug 2023
2401:21a0::/32	4.3B × /64	APNIC	IN	7th Aug 2023
2401:21e0::/32	4.3B × /64	APNIC	VN	7th Aug 2023
2401:2240::/32	4.3B × /64	APNIC	ID	12th May 2017
2401:22a0::/32	4.3B × /64	APNIC	VN	8th Aug 2023
2401:22c0::/32	4.3B × /64	APNIC	SG	12th May 2017
2401:22e0::/32	4.3B × /64	APNIC	VN	8th Aug 2023
2401:2300::/32	4.3B × /64	APNIC	PH	14th Jun 2011