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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

84,419 blocks match, ordered by prefix.

Allocated but unannounced blocks, 55151 to 55200 of 84419
Prefix	Addresses	Registry	Country	Allocated
2403:1900::/32	4.3B × /64	APNIC	AU	14th Feb 2012
2403:1980::/32	4.3B × /64	APNIC	CN	19th Oct 2015
2403:19c0::/32	4.3B × /64	APNIC	SG	26th Jun 2018
2403:1::/32	4.3B × /64	APNIC	IN	26th Sept 2011
2403:1a80::/32	4.3B × /64	APNIC	SG	20th Oct 2015
2403:1ac0::/32	4.3B × /64	APNIC	HK	27th Jun 2018
2403:1c00::/32	4.3B × /64	APNIC	HK	26th Nov 2009
2403:1c80::/32	4.3B × /64	APNIC	CN	20th Oct 2015
2403:1d00::/32	4.3B × /64	APNIC	IN	15th Feb 2012
2403:1d80::/32	4.3B × /64	APNIC	CN	20th Oct 2015
2403:1dc0::/32	4.3B × /64	APNIC	CN	29th Jun 2018
2403:1e00::/32	4.3B × /64	APNIC	AS	29th Jun 2010
2403:1e80::/32	4.3B × /64	APNIC	CN	20th Oct 2015
2403:1f80::/32	4.3B × /64	APNIC	CN	20th Oct 2015
2403:1fc0::/32	4.3B × /64	APNIC	HK	29th Jun 2018
2403:2000::/32	4.3B × /64	APNIC	JP	22nd Jun 2007
2403:2080::/32	4.3B × /64	APNIC	CN	20th Oct 2015
2403:2100::/32	4.3B × /64	APNIC	NZ	16th Feb 2012
2403:2180::/32	4.3B × /64	APNIC	CN	21st Oct 2015
2403:21c0::/32	4.3B × /64	APNIC	BD	3rd Jul 2018
2403:2240::/32	4.3B × /64	APNIC	CN	4th Jul 2018
2403:2280::/32	4.3B × /64	APNIC	CN	21st Oct 2015
2403:22c0::/32	4.3B × /64	APNIC	HK	4th Jul 2018
2403:2340::/32	4.3B × /64	APNIC	SG	4th Jul 2018
2403:2380::/32	4.3B × /64	APNIC	CN	21st Oct 2015
2403:23c0::/32	4.3B × /64	APNIC	IN	4th Jul 2018
2403:2440::/32	4.3B × /64	APNIC	CN	4th Jul 2018
2403:24c0::/32	4.3B × /64	APNIC	CN	4th Jul 2018
2403:2580::/32	4.3B × /64	APNIC	CN	21st Oct 2015
2403:25c0::/32	4.3B × /64	APNIC	CN	5th Jul 2018
2403:2640::/32	4.3B × /64	APNIC	TW	5th Jul 2018
2403:2680::/32	4.3B × /64	APNIC	CN	21st Oct 2015
2403:2700::/32	4.3B × /64	APNIC	ID	22nd Feb 2012
2403:2740::/32	4.3B × /64	APNIC	CN	6th Jul 2018
2403:2780::/32	4.3B × /64	APNIC	CN	21st Oct 2015
2403:2801::/32	4.3B × /64	APNIC	TH	7th Sept 2011
2403:2840::/32	4.3B × /64	APNIC	KH	6th Jul 2018
2403:28c0::/32	4.3B × /64	APNIC	CN	6th Jul 2018
2403:2900::/32	4.3B × /64	APNIC	IN	22nd Feb 2012
2403:2940::/32	4.3B × /64	APNIC	CN	6th Jul 2018
2403:2980::/32	4.3B × /64	APNIC	IN	21st Oct 2015
2403:2a00::/32	4.3B × /64	APNIC	CN	2nd Jul 2010
2403:2a40::/32	4.3B × /64	APNIC	CN	6th Jul 2018
2403:2a80::/32	4.3B × /64	APNIC	AU	22nd Oct 2015
2403:2ac0::/32	4.3B × /64	APNIC	CN	6th Jul 2018
2403:2b80::/32	4.3B × /64	APNIC	MY	22nd Oct 2015
2403:2bc0::/32	4.3B × /64	APNIC	CN	8th Jul 2018
2403:2c0::/32	4.3B × /64	APNIC	AU	6th Jun 2018
2403:2c40::/32	4.3B × /64	APNIC	BD	8th Jul 2018
2403:2cc0::/32	4.3B × /64	APNIC	CN	9th Jul 2018