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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

85,310 blocks match, ordered by prefix.

Allocated but unannounced blocks, 54051 to 54100 of 85310
Prefix	Addresses	Registry	Country	Allocated
2401:4120::/32	4.3B × /64	APNIC	VN	3rd Oct 2023
2401:41a0::/32	4.3B × /64	APNIC	MY	5th Oct 2023
2401:41c0::/32	4.3B × /64	APNIC	HK	6th Jun 2017
2401:420::/32	4.3B × /64	APNIC	IN	26th May 2023
2401:4360::/32	4.3B × /64	APNIC	JP	11th Oct 2023
2401:43a0::/32	4.3B × /64	APNIC	JP	11th Oct 2023
2401:4400::/32	4.3B × /64	APNIC	AU	21st Aug 2009
2401:4460::/32	4.3B × /64	APNIC	BD	12th Oct 2023
2401:44e0::/32	4.3B × /64	APNIC	VN	12th Oct 2023
2401:4540::/32	4.3B × /64	APNIC	NZ	7th Jun 2017
2401:4560::/32	4.3B × /64	APNIC	BD	13th Oct 2023
2401:45c0::/32	4.3B × /64	APNIC	NZ	7th Jun 2017
2401:4600::/32	4.3B × /64	APNIC	AU	23rd Nov 2016
2401:4601::/32	4.3B × /64	APNIC	AU	3rd Jan 2017
2401:460::/32	4.3B × /64	APNIC	LK	29th May 2023
2401:4660::/32	4.3B × /64	APNIC	VN	16th Oct 2023
2401:46a0::/32	4.3B × /64	APNIC	BD	16th Oct 2023
2401:46c0::/32	4.3B × /64	APNIC	MY	7th Jun 2017
2401:46e0::/32	4.3B × /64	APNIC	IN	16th Oct 2023
2401:4700::/32	4.3B × /64	APNIC	IN	23rd Jun 2011
2401:4740::/32	4.3B × /64	APNIC	AU	7th Jun 2017
2401:4800::/32	4.3B × /64	APNIC	IN	20th May 2008
2401:4820::/32	4.3B × /64	APNIC	BD	18th Oct 2023
2401:4840::/32	4.3B × /64	APNIC	HK	7th Jun 2017
2401:4860::/32	4.3B × /64	APNIC	TW	20th Oct 2023
2401:48a0::/32	4.3B × /64	APNIC	VN	23rd Oct 2023
2401:4a20::/32	4.3B × /64	APNIC	IN	24th Oct 2023
2401:4a40::/32	4.3B × /64	APNIC	TH	8th Jun 2017
2401:4aa0::/32	4.3B × /64	APNIC	IN	25th Oct 2023
2401:4ac0::/32	4.3B × /64	APNIC	AU	8th Jun 2017
2401:4b00::/32	4.3B × /64	APNIC	CN	24th Jun 2011
2401:4b40::/32	4.3B × /64	APNIC	AU	8th Jun 2017
2401:4b60::/32	4.3B × /64	APNIC	VN	27th Oct 2023
2401:4b80::/32	4.3B × /64	APNIC	TL	23rd Jul 2014
2401:4bc0::/32	4.3B × /64	APNIC	HK	8th Jun 2017
2401:4c40::/32	4.3B × /64	APNIC	HK	8th Jun 2017
2401:4c60::/32	4.3B × /64	APNIC	ID	31st Oct 2023
2401:4c80::/32	4.3B × /64	APNIC	AU	23rd Jul 2014
2401:4ca0::/32	4.3B × /64	APNIC	TW	1st Nov 2023
2401:4d00::/32	4.3B × /64	APNIC	AU	24th Jun 2011
2401:4d80::/32	4.3B × /64	APNIC	KH	23rd Jul 2014
2401:4da0::/32	4.3B × /64	APNIC	ID	6th Nov 2023
2401:4de0::/32	4.3B × /64	APNIC	VN	9th Nov 2023
2401:4e00::/32	4.3B × /64	APNIC	ID	8th Apr 2010
2401:4e20::/32	4.3B × /64	APNIC	VN	9th Nov 2023
2401:4e80::/32	4.3B × /64	APNIC	HK	23rd Jul 2014
2401:4ec0::/32	4.3B × /64	APNIC	AU	9th Jun 2017
2401:4f40::/32	4.3B × /64	APNIC	IN	9th Jun 2017
2401:4f60::/32	4.3B × /64	APNIC	AU	15th Nov 2023
2401:4f80::/32	4.3B × /64	APNIC	CN	23rd Jul 2014