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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

85,392 blocks match, ordered by prefix.

Allocated but unannounced blocks, 41051 to 41100 of 85392
Prefix	Addresses	Registry	Country	Allocated
2001:df5:24c0::/48	65.5k × /64	APNIC	ID	25th Feb 2025
2001:df5:2540::/48	65.5k × /64	APNIC	ID	25th Feb 2025
2001:df5:2600::/48	65.5k × /64	APNIC	ID	16th Sept 2016
2001:df5:2680::/48	65.5k × /64	APNIC	IN	22nd Oct 2020
2001:df5:26c0::/48	65.5k × /64	APNIC	VN	26th Feb 2025
2001:df5:2700::/48	65.5k × /64	APNIC	ID	15th May 2018
2001:df5:2780::/48	65.5k × /64	APNIC	IN	22nd Oct 2020
2001:df5:27c0::/48	65.5k × /64	APNIC	AU	28th Feb 2025
2001:df5:27c1::/48	65.5k × /64	APNIC	AU	30th Jan 2026
2001:df5:280::/48	65.5k × /64	APNIC	PK	6th Oct 2020
2001:df5:2840::/48	65.5k × /64	APNIC	ID	28th Feb 2025
2001:df5:2880::/48	65.5k × /64	APNIC	KH	23rd Oct 2020
2001:df5:28c0::/48	65.5k × /64	APNIC	AU	2nd Mar 2025
2001:df5:2900::/48	65.5k × /64	APNIC	ID	17th May 2018
2001:df5:29c0::/48	65.5k × /64	APNIC	ID	3rd Mar 2025
2001:df5:2a80::/48	65.5k × /64	APNIC	MY	23rd Oct 2020
2001:df5:2a81::/48	65.5k × /64	APNIC	MY	1st Dec 2020
2001:df5:2ac0::/48	65.5k × /64	APNIC	ID	4th Mar 2025
2001:df5:2b00::/48	65.5k × /64	APNIC	AU	18th May 2018
2001:df5:2b40::/48	65.5k × /64	APNIC	PK	4th Mar 2025
2001:df5:2b80::/48	65.5k × /64	APNIC	PK	26th Oct 2020
2001:df5:2bc0::/48	65.5k × /64	APNIC	VN	4th Mar 2025
2001:df5:2c0::/48	65.5k × /64	APNIC	IN	29th Jan 2025
2001:df5:2c40::/48	65.5k × /64	APNIC	VN	4th Mar 2025
2001:df5:2d00::/48	65.5k × /64	APNIC	AU	18th May 2018
2001:df5:2d40::/48	65.5k × /64	APNIC	VN	4th Mar 2025
2001:df5:2d80::/48	65.5k × /64	APNIC	HK	26th Oct 2020
2001:df5:2dc0::/48	65.5k × /64	APNIC	VN	4th Mar 2025
2001:df5:2e00::/48	65.5k × /64	APNIC	NZ	20th Sept 2016
2001:df5:2e40::/48	65.5k × /64	APNIC	BD	5th Mar 2025
2001:df5:2e80::/48	65.5k × /64	APNIC	PK	27th Oct 2020
2001:df5:2ec0::/48	65.5k × /64	APNIC	ID	5th Mar 2025
2001:df5:2f40::/48	65.5k × /64	APNIC	ID	5th Mar 2025
2001:df5:2f80::/48	65.5k × /64	APNIC	IN	27th Oct 2020
2001:df5:2fc0::/48	65.5k × /64	APNIC	CN	6th Mar 2025
2001:df5:3000::/48	65.5k × /64	APNIC	AU	10th Oct 2013
2001:df5:300::/48	65.5k × /64	APNIC	MN	2nd May 2018
2001:df5:3040::/48	65.5k × /64	APNIC	ID	6th Mar 2025
2001:df5:3080::/48	65.5k × /64	APNIC	VN	27th Oct 2020
2001:df5:30c0::/48	65.5k × /64	APNIC	PH	6th Mar 2025
2001:df5:3140::/48	65.5k × /64	APNIC	BD	7th Mar 2025
2001:df5:31c0::/48	65.5k × /64	APNIC	ID	7th Mar 2025
2001:df5:3200::/48	65.5k × /64	APNIC	ID	20th Sept 2016
2001:df5:3240::/48	65.5k × /64	APNIC	IN	7th Mar 2025
2001:df5:32c0::/48	65.5k × /64	APNIC	MM	8th Mar 2025
2001:df5:3300::/48	65.5k × /64	APNIC	ID	21st May 2018
2001:df5:3340::/48	65.5k × /64	APNIC	BD	10th Mar 2025
2001:df5:3380::/48	65.5k × /64	APNIC	HK	28th Oct 2020
2001:df5:3400::/48	65.5k × /64	APNIC	ID	30th Jul 2015
2001:df5:340::/48	65.5k × /64	APNIC	PK	30th Jan 2025