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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 41701 to 41750 of 85458
Prefix	Addresses	Registry	Country	Allocated
2001:df5:f140::/48	65.5k × /64	APNIC	ID	5th Aug 2025
2001:df5:f180::/48	65.5k × /64	APNIC	NZ	4th Feb 2021
2001:df5:f1c0::/48	65.5k × /64	APNIC	NZ	5th Aug 2025
2001:df5:f200::/48	65.5k × /64	APNIC	ID	26th Oct 2016
2001:df5:f2c0::/48	65.5k × /64	APNIC	NP	5th Aug 2025
2001:df5:f340::/48	65.5k × /64	APNIC	BD	5th Aug 2025
2001:df5:f380::/48	65.5k × /64	APNIC	PK	5th Feb 2021
2001:df5:f3c0::/48	65.5k × /64	APNIC	VN	6th Aug 2025
2001:df5:f400::/47	131k × /64	APNIC	AU	7th Sept 2015
2001:df5:f40::/48	65.5k × /64	APNIC	ID	6th Feb 2025
2001:df5:f440::/48	65.5k × /64	APNIC	MY	7th Aug 2025
2001:df5:f480::/48	65.5k × /64	APNIC	AU	5th Feb 2021
2001:df5:f5c0::/48	65.5k × /64	APNIC	ID	11th Aug 2025
2001:df5:f6c0::/48	65.5k × /64	APNIC	ID	11th Aug 2025
2001:df5:f700::/48	65.5k × /64	APNIC	MY	29th Jul 2018
2001:df5:f740::/48	65.5k × /64	APNIC	IN	11th Aug 2025
2001:df5:f780::/48	65.5k × /64	APNIC	HK	9th Feb 2021
2001:df5:f7c0::/48	65.5k × /64	APNIC	VN	11th Aug 2025
2001:df5:f840::/48	65.5k × /64	APNIC	ID	11th Aug 2025
2001:df5:f880::/48	65.5k × /64	APNIC	MY	9th Feb 2021
2001:df5:f900::/48	65.5k × /64	APNIC	AU	30th Jul 2018
2001:df5:fa00::/48	65.5k × /64	APNIC	FJ	27th Oct 2016
2001:df5:fa40::/48	65.5k × /64	APNIC	IN	12th Aug 2025
2001:df5:fac0::/48	65.5k × /64	APNIC	IN	12th Aug 2025
2001:df5:fb40::/48	65.5k × /64	APNIC	VN	12th Aug 2025
2001:df5:fb81::/48	65.5k × /64	APNIC	AU	15th Dec 2025
2001:df5:fbc0::/48	65.5k × /64	APNIC	ID	14th Aug 2025
2001:df5:fc00::/48	65.5k × /64	APNIC	IN	7th Sept 2015
2001:df5:fc0::/48	65.5k × /64	APNIC	ID	6th Feb 2025
2001:df5:fc40::/48	65.5k × /64	APNIC	ID	15th Aug 2025
2001:df5:fcc0::/48	65.5k × /64	APNIC	ID	15th Aug 2025
2001:df5:fd80::/48	65.5k × /64	APNIC	IN	11th Feb 2021
2001:df5:fdc0::/48	65.5k × /64	APNIC	BD	15th Aug 2025
2001:df5:fe00::/48	65.5k × /64	APNIC	ID	27th Oct 2016
2001:df5:fe40::/48	65.5k × /64	APNIC	VN	18th Aug 2025
2001:df5:fec0::/48	65.5k × /64	APNIC	IN	18th Aug 2025
2001:df5:ff00::/48	65.5k × /64	APNIC	IN	30th Jul 2018
2001:df5:ff40::/48	65.5k × /64	APNIC	AU	18th Aug 2025
2001:df5:ff80::/48	65.5k × /64	APNIC	IN	11th Feb 2021
2001:df5:ffc0::/48	65.5k × /64	APNIC	ID	18th Aug 2025
2001:df6:100::/48	65.5k × /64	APNIC	CN	31st Jul 2018
2001:df6:1040::/48	65.5k × /64	APNIC	ID	29th Aug 2025
2001:df6:10c0::/48	65.5k × /64	APNIC	ID	29th Aug 2025
2001:df6:1100::/48	65.5k × /64	APNIC	AU	2nd Aug 2018
2001:df6:1140::/48	65.5k × /64	APNIC	ID	29th Aug 2025
2001:df6:1180::/48	65.5k × /64	APNIC	BD	25th Feb 2021
2001:df6:1200::/48	65.5k × /64	APNIC	AU	1st Nov 2016
2001:df6:1280::/48	65.5k × /64	APNIC	IN	25th Feb 2021
2001:df6:12c0::/48	65.5k × /64	APNIC	ID	1st Sept 2025
2001:df6:1300::/48	65.5k × /64	APNIC	ID	3rd Aug 2018