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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 41751 to 41800 of 85458
Prefix	Addresses	Registry	Country	Allocated
2001:df6:1380::/48	65.5k × /64	APNIC	IN	25th Feb 2021
2001:df6:1400::/48	65.5k × /64	APNIC	SG	10th Sept 2015
2001:df6:140::/48	65.5k × /64	APNIC	IN	19th Aug 2025
2001:df6:14c0::/48	65.5k × /64	APNIC	ID	3rd Sept 2025
2001:df6:1500::/48	65.5k × /64	APNIC	IN	3rd Aug 2018
2001:df6:1540::/48	65.5k × /64	APNIC	ID	4th Sept 2025
2001:df6:15c0::/48	65.5k × /64	APNIC	ID	4th Sept 2025
2001:df6:1600::/48	65.5k × /64	APNIC	VN	1st Nov 2016
2001:df6:1680::/48	65.5k × /64	APNIC	VN	26th Feb 2021
2001:df6:1700::/48	65.5k × /64	APNIC	NZ	6th Aug 2018
2001:df6:1740::/48	65.5k × /64	APNIC	ID	4th Sept 2025
2001:df6:1800::/48	65.5k × /64	APNIC	ID	23rd May 2014
2001:df6:1840::/48	65.5k × /64	APNIC	HK	6th Sept 2025
2001:df6:1880::/48	65.5k × /64	APNIC	IN	26th Feb 2021
2001:df6:18c0::/48	65.5k × /64	APNIC	PH	6th Sept 2025
2001:df6:1900::/48	65.5k × /64	APNIC	MY	6th Aug 2018
2001:df6:1980::/48	65.5k × /64	APNIC	HK	26th Feb 2021
2001:df6:19c0::/48	65.5k × /64	APNIC	IN	9th Sept 2025
2001:df6:1a00::/48	65.5k × /64	APNIC	VN	1st Nov 2016
2001:df6:1a40::/48	65.5k × /64	APNIC	ID	10th Sept 2025
2001:df6:1a80::/48	65.5k × /64	APNIC	BN	26th Feb 2021
2001:df6:1ac0::/48	65.5k × /64	APNIC	ID	10th Sept 2025
2001:df6:1b00::/48	65.5k × /64	APNIC	AU	6th Aug 2018
2001:df6:1b40::/48	65.5k × /64	APNIC	KH	10th Sept 2025
2001:df6:1bc0::/48	65.5k × /64	APNIC	ID	11th Sept 2025
2001:df6:1c80::/48	65.5k × /64	APNIC	HK	1st Mar 2021
2001:df6:1cc0::/48	65.5k × /64	APNIC	BD	11th Sept 2025
2001:df6:1d00::/48	65.5k × /64	APNIC	ID	6th Aug 2018
2001:df6:1d40::/48	65.5k × /64	APNIC	IN	12th Sept 2025
2001:df6:1d80::/48	65.5k × /64	APNIC	VN	1st Mar 2021
2001:df6:1dc0::/48	65.5k × /64	APNIC	BD	12th Sept 2025
2001:df6:1e80::/48	65.5k × /64	APNIC	BD	2nd Mar 2021
2001:df6:1ec0::/48	65.5k × /64	APNIC	FJ	15th Sept 2025
2001:df6:1f00::/48	65.5k × /64	APNIC	ID	8th Aug 2018
2001:df6:1f40::/48	65.5k × /64	APNIC	IN	15th Sept 2025
2001:df6:1f80::/48	65.5k × /64	APNIC	BD	2nd Mar 2021
2001:df6:200::/48	65.5k × /64	APNIC	HK	28th Oct 2016
2001:df6:2080::/48	65.5k × /64	APNIC	NZ	2nd Mar 2021
2001:df6:2100::/48	65.5k × /64	APNIC	AU	9th Aug 2018
2001:df6:2140::/48	65.5k × /64	APNIC	IN	17th Sept 2025
2001:df6:21c0::/48	65.5k × /64	APNIC	NP	17th Sept 2025
2001:df6:2240::/48	65.5k × /64	APNIC	PH	18th Sept 2025
2001:df6:2300::/48	65.5k × /64	APNIC	ID	9th Aug 2018
2001:df6:2340::/48	65.5k × /64	APNIC	PH	18th Sept 2025
2001:df6:23c0::/48	65.5k × /64	APNIC	PH	18th Sept 2025
2001:df6:240::/48	65.5k × /64	APNIC	NZ	20th Aug 2025
2001:df6:2440::/48	65.5k × /64	APNIC	ID	19th Sept 2025
2001:df6:2480::/48	65.5k × /64	APNIC	NL	3rd Mar 2021
2001:df6:24c0::/48	65.5k × /64	APNIC	TH	21st Sept 2025
2001:df6:2500::/48	65.5k × /64	APNIC	MY	9th Aug 2018