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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 54951 to 55000 of 85310
Prefix	Addresses	Registry	Country	Allocated
2402:3d80::/32	4.3B × /64	APNIC	ID	10th Apr 2015
2402:3da0::/32	4.3B × /64	APNIC	MY	5th Dec 2025
2402:3de0::/32	4.3B × /64	APNIC	CN	8th Dec 2025
2402:3e00::/32	4.3B × /64	APNIC	CN	12th May 2010
2402:3e20::/32	4.3B × /64	APNIC	BD	10th Dec 2025
2402:3e60::/32	4.3B × /64	APNIC	AU	11th Dec 2025
2402:3ec0::/32	4.3B × /64	APNIC	CN	20th Dec 2017
2402:3fa0::/32	4.3B × /64	APNIC	PH	16th Dec 2025
2402:4060::/32	4.3B × /64	APNIC	CN	17th Dec 2025
2402:40a0::/32	4.3B × /64	APNIC	JP	17th Dec 2025
2402:40e0::/32	4.3B × /64	APNIC	PK	17th Dec 2025
2402:4140::/32	4.3B × /64	APNIC	CN	22nd Dec 2017
2402:420::/32	4.3B × /64	APNIC	BD	24th Apr 2025
2402:42a0::/32	4.3B × /64	APNIC	BD	22nd Dec 2025
2402:42c0::/32	4.3B × /64	APNIC	CN	25th Dec 2017
2402:42e0::/32	4.3B × /64	APNIC	IN	24th Dec 2025
2402:4340::/32	4.3B × /64	APNIC	CN	26th Dec 2017
2402:4360::/32	4.3B × /64	APNIC	SG	29th Dec 2025
2402:4380::/32	4.3B × /64	APNIC	AU	15th Apr 2015
2402:43c0::/32	4.3B × /64	APNIC	CN	26th Dec 2017
2402:440::/32	4.3B × /64	APNIC	CN	16th Nov 2017
2402:44a0::/32	4.3B × /64	APNIC	SG	31st Dec 2025
2402:4500::/32	4.3B × /64	APNIC	CN	20th Oct 2011
2402:4540::/32	4.3B × /64	APNIC	CN	28th Dec 2017
2402:45a0::/32	4.3B × /64	APNIC	PH	6th Jan 2026
2402:4660::/32	4.3B × /64	APNIC	PK	8th Jan 2026
2402:4680::/32	4.3B × /64	APNIC	HK	23rd Apr 2015
2402:46a0::/32	4.3B × /64	APNIC	BD	8th Jan 2026
2402:46e0::/32	4.3B × /64	APNIC	ID	8th Jan 2026
2402:4720::/32	4.3B × /64	APNIC	BD	9th Jan 2026
2402:4740::/32	4.3B × /64	APNIC	KH	3rd Jan 2018
2402:47a0::/32	4.3B × /64	APNIC	HK	13th Jan 2026
2402:47e0::/32	4.3B × /64	APNIC	NZ	13th Jan 2026
2402:480::/32	4.3B × /64	APNIC	ID	5th Feb 2015
2402:4820::/32	4.3B × /64	APNIC	CN	14th Jan 2026
2402:4860::/32	4.3B × /64	APNIC	IN	14th Jan 2026
2402:48a0::/32	4.3B × /64	APNIC	PK	15th Jan 2026
2402:48c0::/32	4.3B × /64	APNIC	BD	5th Jan 2018
2402:4940::/32	4.3B × /64	APNIC	BD	5th Jan 2018
2402:4960::/32	4.3B × /64	APNIC	PK	15th Jan 2026
2402:4a00::/32	4.3B × /64	APNIC	CN	12th May 2010
2402:4a0::/32	4.3B × /64	APNIC	TW	28th Apr 2025
2402:4a20::/32	4.3B × /64	APNIC	SG	22nd Jan 2026
2402:4a40::/32	4.3B × /64	APNIC	CN	5th Jan 2018
2402:4a60::/32	4.3B × /64	APNIC	AU	23rd Jan 2026
2402:4a80::/32	4.3B × /64	APNIC	CN	28th Apr 2015
2402:4aa0::/32	4.3B × /64	APNIC	TH	23rd Jan 2026
2402:4ac0::/32	4.3B × /64	APNIC	CN	5th Jan 2018
2402:4b00::/32	4.3B × /64	APNIC	MY	20th Oct 2011
2402:4b20::/32	4.3B × /64	APNIC	BD	27th Jan 2026