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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 55051 to 55100 of 85310
Prefix	Addresses	Registry	Country	Allocated
2402:56c0::/32	4.3B × /64	APNIC	JP	15th Jan 2018
2402:5740::/32	4.3B × /64	APNIC	IN	15th Jan 2018
2402:5760::/32	4.3B × /64	APNIC	IN	13th Apr 2026
2402:57e0::/32	4.3B × /64	APNIC	IN	14th Apr 2026
2402:5800::/32	4.3B × /64	APNIC	KR	1st Jul 2008
2402:580::/32	4.3B × /64	APNIC	ID	6th Feb 2015
2402:5820::/32	4.3B × /64	APNIC	CN	15th Apr 2026
2402:5880::/32	4.3B × /64	APNIC	CN	13th May 2015
2402:58a0::/32	4.3B × /64	APNIC	AU	16th Apr 2026
2402:58c0::/32	4.3B × /64	APNIC	PG	16th Jan 2018
2402:5900::/32	4.3B × /64	APNIC	SG	24th Oct 2011
2402:5940::/32	4.3B × /64	APNIC	CN	16th Jan 2018
2402:5960::/32	4.3B × /64	APNIC	PH	20th Apr 2026
2402:59c0::/32	4.3B × /64	APNIC	CN	16th Jan 2018
2402:59e0::/32	4.3B × /64	APNIC	JP	22nd Apr 2026
2402:5a0::/32	4.3B × /64	APNIC	IN	29th Apr 2025
2402:5a20::/32	4.3B × /64	APNIC	JP	22nd Apr 2026
2402:5a40::/32	4.3B × /64	APNIC	CN	17th Jan 2018
2402:5aa0::/32	4.3B × /64	APNIC	HK	27th Apr 2026
2402:5b20::/32	4.3B × /64	APNIC	BD	30th Apr 2026
2402:5b40::/32	4.3B × /64	APNIC	CN	17th Jan 2018
2402:5b60::/32	4.3B × /64	APNIC	PK	30th Apr 2026
2402:5bc0::/32	4.3B × /64	APNIC	CN	18th Jan 2018
2402:5be0::/32	4.3B × /64	APNIC	IN	2nd May 2026
2402:5c0::/32	4.3B × /64	APNIC	CN	17th Nov 2017
2402:5c60::/32	4.3B × /64	APNIC	AU	6th May 2026
2402:5ca0::/32	4.3B × /64	APNIC	TW	7th May 2026
2402:5cc0::/32	4.3B × /64	APNIC	CA	18th Jan 2018
2402:5ce0::/32	4.3B × /64	APNIC	IN	11th May 2026
2402:5d00::/32	4.3B × /64	APNIC	CN	25th Oct 2011
2402:5d20::/32	4.3B × /64	APNIC	IN	11th May 2026
2402:5d40::/32	4.3B × /64	APNIC	AU	18th Jan 2018
2402:5da0::/32	4.3B × /64	APNIC	TW	12th May 2026
2402:5dc0::/32	4.3B × /64	APNIC	HK	18th Jan 2018
2402:5e00::/32	4.3B × /64	APNIC	CN	14th May 2010
2402:5e20::/32	4.3B × /64	APNIC	IN	12th May 2026
2402:5e60::/32	4.3B × /64	APNIC	AU	13th May 2026
2402:5ea0::/32	4.3B × /64	APNIC	IN	14th May 2026
2402:5f00::/32	4.3B × /64	APNIC	ID	27th Oct 2011
2402:5f20::/32	4.3B × /64	APNIC	CN	22nd May 2026
2402:5f40::/32	4.3B × /64	APNIC	CN	19th Jan 2018
2402:5fc0::/32	4.3B × /64	APNIC	BD	19th Jan 2018
2402:5fe0::/32	4.3B × /64	APNIC	PH	25th May 2026
2402:6060::/32	4.3B × /64	APNIC	CN	28th May 2026
2402:60a0::/32	4.3B × /64	APNIC	VN	1st Jun 2026
2402:60e0::/32	4.3B × /64	APNIC	SG	1st Jun 2026
2402:6100::/32	4.3B × /64	APNIC	KR	27th Oct 2011
2402:6120::/32	4.3B × /64	APNIC	HK	2nd Jun 2026
2402:6140::/32	4.3B × /64	APNIC	HK	24th Jan 2018
2402:6160::/32	4.3B × /64	APNIC	IN	2nd Jun 2026