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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Browse by registry

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Countries with unannounced space registered through APNIC, largest first.

Unannounced blocks registered through APNIC

22,624 blocks match, ordered by prefix.

Allocated but unannounced blocks, 11901 to 11950 of 22624
Prefix	Addresses	Registry	Country	Allocated
2001:df6:a540::/48	65.5k × /64	APNIC	VN	29th Jan 2026
2001:df6:a580::/48	65.5k × /64	APNIC	BD	12th May 2021
2001:df6:a5c0::/48	65.5k × /64	APNIC	ID	29th Jan 2026
2001:df6:a600::/48	65.5k × /64	APNIC	IN	18th Nov 2016
2001:df6:a640::/48	65.5k × /64	APNIC	IN	29th Jan 2026
2001:df6:a740::/48	65.5k × /64	APNIC	ID	29th Jan 2026
2001:df6:a780::/48	65.5k × /64	APNIC	HK	17th May 2021
2001:df6:a7c0::/48	65.5k × /64	APNIC	ID	30th Jan 2026
2001:df6:a80::/48	65.5k × /64	APNIC	PK	21st Feb 2021
2001:df6:a880::/48	65.5k × /64	APNIC	PG	17th May 2021
2001:df6:a8c0::/48	65.5k × /64	APNIC	IN	30th Jan 2026
2001:df6:a900::/48	65.5k × /64	APNIC	IN	14th Sept 2018
2001:df6:a980::/48	65.5k × /64	APNIC	HK	17th May 2021
2001:df6:a9c0::/48	65.5k × /64	APNIC	ID	2nd Feb 2026
2001:df6:aa00::/48	65.5k × /64	APNIC	VN	18th Nov 2016
2001:df6:aa80::/48	65.5k × /64	APNIC	HK	17th May 2021
2001:df6:aac0::/48	65.5k × /64	APNIC	VN	2nd Feb 2026
2001:df6:ab80::/48	65.5k × /64	APNIC	IN	18th May 2021
2001:df6:abc0::/48	65.5k × /64	APNIC	ID	3rd Feb 2026
2001:df6:ac0::/48	65.5k × /64	APNIC	IN	27th Aug 2025
2001:df6:ac80::/48	65.5k × /64	APNIC	VN	19th May 2021
2001:df6:ad00::/48	65.5k × /64	APNIC	AU	17th Sept 2018
2001:df6:ae00::/48	65.5k × /64	APNIC	IN	18th Nov 2016
2001:df6:ae40::/48	65.5k × /64	APNIC	ID	5th Feb 2026
2001:df6:ae80::/48	65.5k × /64	APNIC	AU	20th May 2021
2001:df6:af40::/48	65.5k × /64	APNIC	IN	5th Feb 2026
2001:df6:af80::/48	65.5k × /64	APNIC	IN	20th May 2021
2001:df6:afc0::/48	65.5k × /64	APNIC	ID	5th Feb 2026
2001:df6:b00::/48	65.5k × /64	APNIC	ID	1st Aug 2018
2001:df6:b040::/48	65.5k × /64	APNIC	ID	8th Feb 2026
2001:df6:b0c0::/48	65.5k × /64	APNIC	BD	9th Feb 2026
2001:df6:b100::/48	65.5k × /64	APNIC	IN	18th Sept 2018
2001:df6:b140::/48	65.5k × /64	APNIC	BD	9th Feb 2026
2001:df6:b1c0::/48	65.5k × /64	APNIC	IN	9th Feb 2026
2001:df6:b200::/48	65.5k × /64	APNIC	AU	21st Nov 2016
2001:df6:b240::/48	65.5k × /64	APNIC	AU	10th Feb 2026
2001:df6:b280::/48	65.5k × /64	APNIC	BD	24th May 2021
2001:df6:b2c0::/48	65.5k × /64	APNIC	HK	10th Feb 2026
2001:df6:b300::/48	65.5k × /64	APNIC	PH	19th Sept 2018
2001:df6:b340::/48	65.5k × /64	APNIC	BD	10th Feb 2026
2001:df6:b40::/48	65.5k × /64	APNIC	IN	27th Aug 2025
2001:df6:b440::/48	65.5k × /64	APNIC	ID	11th Feb 2026
2001:df6:b480::/48	65.5k × /64	APNIC	ID	24th May 2021
2001:df6:b540::/48	65.5k × /64	APNIC	BD	12th Feb 2026
2001:df6:b5c0::/48	65.5k × /64	APNIC	PK	13th Feb 2026
2001:df6:b600::/48	65.5k × /64	APNIC	AU	21st Nov 2016
2001:df6:b640::/48	65.5k × /64	APNIC	ID	13th Feb 2026
2001:df6:b6c0::/48	65.5k × /64	APNIC	IN	13th Feb 2026
2001:df6:b700::/48	65.5k × /64	APNIC	ID	19th Sept 2018
2001:df6:b740::/48	65.5k × /64	APNIC	FJ	16th Feb 2026