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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

84,424 blocks match, ordered by prefix.

Allocated but unannounced blocks, 57101 to 57150 of 84424
Prefix	Addresses	Registry	Country	Allocated
2406:c580::/32	4.3B × /64	APNIC	CN	17th Aug 2016
2406:c680::/32	4.3B × /64	APNIC	CN	17th Aug 2016
2406:c6c0::/32	4.3B × /64	APNIC	IN	23rd Nov 2020
2406:c700::/32	4.3B × /64	APNIC	JP	19th Apr 2013
2406:c740::/32	4.3B × /64	APNIC	BD	23rd Nov 2020
2406:c780::/32	4.3B × /64	APNIC	CN	17th Aug 2016
2406:c840::/32	4.3B × /64	APNIC	IN	23rd Nov 2020
2406:c880::/32	4.3B × /64	APNIC	CN	17th Aug 2016
2406:c8c0::/32	4.3B × /64	APNIC	PH	24th Nov 2020
2406:c900::/32	4.3B × /64	APNIC	CN	22nd Apr 2013
2406:c980::/32	4.3B × /64	APNIC	CN	17th Aug 2016
2406:c9c0::/32	4.3B × /64	APNIC	IN	24th Nov 2020
2406:ca40::/32	4.3B × /64	APNIC	VN	25th Nov 2020
2406:ca80::/32	4.3B × /64	APNIC	CN	17th Aug 2016
2406:cb00::/32	4.3B × /64	APNIC	AU	23rd Apr 2013
2406:cb80::/32	4.3B × /64	APNIC	CN	17th Aug 2016
2406:cbc0::/32	4.3B × /64	APNIC	VN	25th Nov 2020
2406:cc00::/32	4.3B × /64	APNIC	SG	23rd Feb 2010
2406:cc80::/32	4.3B × /64	APNIC	CN	17th Aug 2016
2406:cd00::/32	4.3B × /64	APNIC	KI	26th Apr 2013
2406:cd40::/32	4.3B × /64	APNIC	TH	26th Nov 2020
2406:cd80::/32	4.3B × /64	APNIC	CN	18th Aug 2016
2406:ce40::/32	4.3B × /64	APNIC	TW	26th Nov 2020
2406:ce80::/32	4.3B × /64	APNIC	CN	18th Aug 2016
2406:cec0::/32	4.3B × /64	APNIC	IN	26th Nov 2020
2406:cf01::/32	4.3B × /64	APNIC	CN	16th Jul 2019
2406:cf02::/31	8.6B × /64	APNIC	CN	16th Jul 2019
2406:cf40::/32	4.3B × /64	APNIC	IN	27th Nov 2020
2406:cf80::/32	4.3B × /64	APNIC	CN	18th Aug 2016
2406:d000::/32	4.3B × /64	APNIC	KR	1st Feb 2008
2406:d080::/32	4.3B × /64	APNIC	CN	18th Aug 2016
2406:d0c0::/32	4.3B × /64	APNIC	TW	30th Nov 2020
2406:d100::/32	4.3B × /64	APNIC	AF	29th Apr 2013
2406:d180::/32	4.3B × /64	APNIC	CN	18th Aug 2016
2406:d1c0::/32	4.3B × /64	APNIC	BD	30th Nov 2020
2406:d240::/32	4.3B × /64	APNIC	BD	30th Nov 2020
2406:d280::/32	4.3B × /64	APNIC	CN	18th Aug 2016
2406:d2c0::/32	4.3B × /64	APNIC	CN	1st Dec 2020
2406:d300::/32	4.3B × /64	APNIC	AU	30th Apr 2013
2406:d380::/32	4.3B × /64	APNIC	CN	18th Aug 2016
2406:d3c0::/32	4.3B × /64	APNIC	AU	2nd Dec 2020
2406:d400::/32	4.3B × /64	APNIC	TW	23rd Feb 2010
2406:d480::/32	4.3B × /64	APNIC	CN	18th Aug 2016
2406:d4c0::/32	4.3B × /64	APNIC	HK	2nd Dec 2020
2406:d540::/32	4.3B × /64	APNIC	IN	2nd Dec 2020
2406:d580::/32	4.3B × /64	APNIC	CN	18th Aug 2016
2406:d600::/32	4.3B × /64	APNIC	IN	7th Feb 2011
2406:d680::/32	4.3B × /64	APNIC	CN	18th Aug 2016
2406:d6c0::/32	4.3B × /64	APNIC	JP	4th Dec 2020
2406:d700::/32	4.3B × /64	APNIC	KR	1st May 2013