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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 55901 to 55950 of 85310
Prefix	Addresses	Registry	Country	Allocated
2403:c340::/32	4.3B × /64	APNIC	ID	15th Oct 2018
2403:c3c0::/32	4.3B × /64	APNIC	CN	15th Oct 2018
2403:c400::/32	4.3B × /64	APNIC	AU	20th Jan 2010
2403:c40::/32	4.3B × /64	APNIC	HK	9th Jun 2018
2403:c440::/32	4.3B × /64	APNIC	CN	15th Oct 2018
2403:c480::/32	4.3B × /64	APNIC	CN	30th Nov 2015
2403:c4c0::/32	4.3B × /64	APNIC	CN	15th Oct 2018
2403:c500::/32	4.3B × /64	APNIC	SG	4th May 2012
2403:c540::/32	4.3B × /64	APNIC	HK	16th Oct 2018
2403:c600::/32	4.3B × /64	APNIC	ID	6th Aug 2010
2403:c640::/32	4.3B × /64	APNIC	NZ	17th Oct 2018
2403:c680::/32	4.3B × /64	APNIC	IN	1st Dec 2015
2403:c740::/32	4.3B × /64	APNIC	TH	17th Oct 2018
2403:c8c0::/32	4.3B × /64	APNIC	BD	18th Oct 2018
2403:c900::/32	4.3B × /64	APNIC	NZ	9th May 2012
2403:c940::/32	4.3B × /64	APNIC	TW	19th Oct 2018
2403:c9c0::/32	4.3B × /64	APNIC	TW	22nd Oct 2018
2403:cbc0::/32	4.3B × /64	APNIC	MY	22nd Oct 2018
2403:cc00::/32	4.3B × /64	APNIC	SG	22nd Jan 2010
2403:cc80::/32	4.3B × /64	APNIC	BD	6th Dec 2015
2403:cd00::/32	4.3B × /64	APNIC	PH	9th May 2012
2403:cd80::/32	4.3B × /64	APNIC	PH	7th Dec 2015
2403:cdc0::/32	4.3B × /64	APNIC	CN	22nd Oct 2018
2403:ce00::/32	4.3B × /64	APNIC	AU	6th Aug 2010
2403:ce40::/32	4.3B × /64	APNIC	TW	22nd Oct 2018
2403:cf00::/32	4.3B × /64	APNIC	AU	9th May 2012
2403:cf80::/32	4.3B × /64	APNIC	CN	8th Dec 2015
2403:d001::/32	4.3B × /64	APNIC	JP	7th Sept 2020
2403:d00::/32	4.3B × /64	APNIC	AU	6th Feb 2012
2403:d080::/32	4.3B × /64	APNIC	CN	8th Dec 2015
2403:d0c0::/32	4.3B × /64	APNIC	TH	24th Oct 2018
2403:d100::/32	4.3B × /64	APNIC	AU	9th May 2012
2403:d180::/32	4.3B × /64	APNIC	CN	8th Dec 2015
2403:d1c0::/32	4.3B × /64	APNIC	AU	24th Oct 2018
2403:d280::/32	4.3B × /64	APNIC	CN	8th Dec 2015
2403:d2c0::/32	4.3B × /64	APNIC	CN	25th Oct 2018
2403:d380::/32	4.3B × /64	APNIC	CN	8th Dec 2015
2403:d3c0::/32	4.3B × /64	APNIC	AU	25th Oct 2018
2403:d440::/32	4.3B × /64	APNIC	CN	25th Oct 2018
2403:d480::/32	4.3B × /64	APNIC	CN	8th Dec 2015
2403:d580::/32	4.3B × /64	APNIC	CN	8th Dec 2015
2403:d5c0::/32	4.3B × /64	APNIC	TW	26th Oct 2018
2403:d640::/32	4.3B × /64	APNIC	ID	26th Oct 2018
2403:d680::/32	4.3B × /64	APNIC	CN	8th Dec 2015
2403:d6c0::/32	4.3B × /64	APNIC	NZ	28th Oct 2018
2403:d700::/32	4.3B × /64	APNIC	MN	10th May 2012
2403:d780::/32	4.3B × /64	APNIC	CN	8th Dec 2015
2403:d7c0::/32	4.3B × /64	APNIC	CN	29th Oct 2018
2403:d80::/32	4.3B × /64	APNIC	CN	12th Oct 2015
2403:d880::/32	4.3B × /64	APNIC	CN	8th Dec 2015