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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through APNIC, largest first.

Unannounced blocks registered through APNIC

22,592 blocks match, ordered by prefix.

Allocated but unannounced blocks, 17751 to 17800 of 22592
Prefix	Addresses	Registry	Country	Allocated
2402:5160::/32	4.3B × /64	APNIC	MM	9th Mar 2026
2402:5180::/32	4.3B × /64	APNIC	CN	6th May 2015
2402:51a0::/32	4.3B × /64	APNIC	CN	9th Mar 2026
2402:51e0::/32	4.3B × /64	APNIC	TL	12th Mar 2026
2402:5200::/32	4.3B × /64	APNIC	AU	13th May 2010
2402:5280::/32	4.3B × /64	APNIC	AU	11th May 2015
2402:52e0::/32	4.3B × /64	APNIC	JP	26th Mar 2026
2402:5340::/32	4.3B × /64	APNIC	CN	11th Jan 2018
2402:5360::/32	4.3B × /64	APNIC	AU	29th Mar 2026
2402:53a0::/32	4.3B × /64	APNIC	AU	30th Mar 2026
2402:53c0::/32	4.3B × /64	APNIC	IN	11th Jan 2018
2402:5440::/32	4.3B × /64	APNIC	BD	11th Jan 2018
2402:5460::/32	4.3B × /64	APNIC	BD	1st Apr 2026
2402:5480::/32	4.3B × /64	APNIC	AU	12th May 2015
2402:5500::/32	4.3B × /64	APNIC	PH	21st Oct 2011
2402:5540::/32	4.3B × /64	APNIC	AU	15th Jan 2018
2402:5560::/32	4.3B × /64	APNIC	IN	8th Apr 2026
2402:55a0::/32	4.3B × /64	APNIC	TW	9th Apr 2026
2402:55c0::/32	4.3B × /64	APNIC	BD	15th Jan 2018
2402:5600::/32	4.3B × /64	APNIC	AU	13th May 2010
2402:560::/32	4.3B × /64	APNIC	IN	29th Apr 2025
2402:5640::/32	4.3B × /64	APNIC	ID	15th Jan 2018
2402:56a0::/32	4.3B × /64	APNIC	AU	10th Apr 2026
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
2402:58c0::/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
2402:5ae0::/32	4.3B × /64	APNIC	PH	30th 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
2402:5c0::/32	4.3B × /64	APNIC	CN	17th Nov 2017
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