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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 the most unannounced blocks, largest first.

Unannounced blocks

85,458 blocks match, ordered by prefix.

Allocated but unannounced blocks, 41601 to 41650 of 85458
Prefix	Addresses	Registry	Country	Allocated
2001:df5:cfc0::/48	65.5k × /64	APNIC	IN	2nd Jul 2025
2001:df5:d000::/48	65.5k × /64	APNIC	ID	16th Oct 2013
2001:df5:d00::/48	65.5k × /64	APNIC	IN	7th May 2018
2001:df5:d040::/48	65.5k × /64	APNIC	VN	2nd Jul 2025
2001:df5:d080::/48	65.5k × /64	APNIC	BD	14th Jan 2021
2001:df5:d0c0::/48	65.5k × /64	APNIC	VN	2nd Jul 2025
2001:df5:d100::/48	65.5k × /64	APNIC	MY	12th Jul 2018
2001:df5:d140::/48	65.5k × /64	APNIC	VN	2nd Jul 2025
2001:df5:d180::/48	65.5k × /64	APNIC	IN	15th Jan 2021
2001:df5:d240::/48	65.5k × /64	APNIC	ID	4th Jul 2025
2001:df5:d300::/48	65.5k × /64	APNIC	IN	12th Jul 2018
2001:df5:d3c0::/48	65.5k × /64	APNIC	BD	4th Jul 2025
2001:df5:d40::/48	65.5k × /64	APNIC	VN	6th Feb 2025
2001:df5:d440::/48	65.5k × /64	APNIC	IN	4th Jul 2025
2001:df5:d480::/48	65.5k × /64	APNIC	AU	18th Jan 2021
2001:df5:d4c0::/48	65.5k × /64	APNIC	IN	8th Jul 2025
2001:df5:d540::/48	65.5k × /64	APNIC	ID	8th Jul 2025
2001:df5:d580::/48	65.5k × /64	APNIC	AU	19th Jan 2021
2001:df5:d5c0::/48	65.5k × /64	APNIC	BD	9th Jul 2025
2001:df5:d600::/48	65.5k × /64	APNIC	AU	19th Oct 2016
2001:df5:d640::/48	65.5k × /64	APNIC	ID	9th Jul 2025
2001:df5:d700::/48	65.5k × /64	APNIC	IN	13th Jul 2018
2001:df5:d740::/48	65.5k × /64	APNIC	VN	9th Jul 2025
2001:df5:d780::/48	65.5k × /64	APNIC	SG	20th Jan 2021
2001:df5:d7c0::/48	65.5k × /64	APNIC	ID	10th Jul 2025
2001:df5:d800::/48	65.5k × /64	APNIC	SG	20th May 2014
2001:df5:d80::/48	65.5k × /64	APNIC	ID	9th Oct 2020
2001:df5:d840::/48	65.5k × /64	APNIC	BD	10th Jul 2025
2001:df5:d8c0::/48	65.5k × /64	APNIC	ID	10th Jul 2025
2001:df5:d900::/48	65.5k × /64	APNIC	AU	16th Jul 2018
2001:df5:d940::/48	65.5k × /64	APNIC	BD	10th Jul 2025
2001:df5:d980::/48	65.5k × /64	APNIC	PH	21st Jan 2021
2001:df5:d9c0::/48	65.5k × /64	APNIC	ID	11th Jul 2025
2001:df5:da00::/48	65.5k × /64	APNIC	PH	20th Oct 2016
2001:df5:da40::/48	65.5k × /64	APNIC	IN	11th Jul 2025
2001:df5:dac0::/48	65.5k × /64	APNIC	ID	11th Jul 2025
2001:df5:db00::/48	65.5k × /64	APNIC	AU	17th Jul 2018
2001:df5:db40::/48	65.5k × /64	APNIC	BD	14th Jul 2025
2001:df5:dbc0::/48	65.5k × /64	APNIC	VN	14th Jul 2025
2001:df5:dc0::/48	65.5k × /64	APNIC	VN	6th Feb 2025
2001:df5:dc40::/48	65.5k × /64	APNIC	IN	14th Jul 2025
2001:df5:dc80::/48	65.5k × /64	APNIC	NP	22nd Jan 2021
2001:df5:dcc0::/48	65.5k × /64	APNIC	ID	15th Jul 2025
2001:df5:dd00::/48	65.5k × /64	APNIC	AU	18th Jul 2018
2001:df5:dd40::/48	65.5k × /64	APNIC	ID	15th Jul 2025
2001:df5:ddc0::/48	65.5k × /64	APNIC	ID	16th Jul 2025
2001:df5:de40::/48	65.5k × /64	APNIC	IN	16th Jul 2025
2001:df5:de80::/48	65.5k × /64	APNIC	IN	22nd Jan 2021
2001:df5:dec0::/48	65.5k × /64	APNIC	BD	16th Jul 2025
2001:df5:df00::/48	65.5k × /64	APNIC	MV	19th Jul 2018