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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Browse by country

Countries with the most unannounced blocks, largest first.

Unannounced blocks

85,392 blocks match, ordered by prefix.

Allocated but unannounced blocks, 41401 to 41450 of 85392
Prefix	Addresses	Registry	Country	Allocated
2001:df5:9dc0::/48	65.5k × /64	APNIC	ID	28th May 2025
2001:df5:9e40::/48	65.5k × /64	APNIC	ID	28th May 2025
2001:df5:9ec0::/48	65.5k × /64	APNIC	ID	28th May 2025
2001:df5:9f40::/48	65.5k × /64	APNIC	IN	28th May 2025
2001:df5:9fc0::/48	65.5k × /64	APNIC	IN	28th May 2025
2001:df5:a000::/48	65.5k × /64	APNIC	ID	2nd Jul 2013
2001:df5:a040::/48	65.5k × /64	APNIC	ID	29th May 2025
2001:df5:a0c0::/48	65.5k × /64	APNIC	ID	29th May 2025
2001:df5:a140::/48	65.5k × /64	APNIC	BD	29th May 2025
2001:df5:a1c0::/48	65.5k × /64	APNIC	ID	29th May 2025
2001:df5:a280::/48	65.5k × /64	APNIC	IN	17th Dec 2020
2001:df5:a2c0::/48	65.5k × /64	APNIC	IN	29th May 2025
2001:df5:a340::/47	131k × /64	APNIC	IN	30th May 2025
2001:df5:a380::/48	65.5k × /64	APNIC	IN	18th Dec 2020
2001:df5:a400::/48	65.5k × /64	APNIC	IN	24th Aug 2015
2001:df5:a40::/48	65.5k × /64	APNIC	ID	5th Feb 2025
2001:df5:a440::/48	65.5k × /64	APNIC	IN	30th May 2025
2001:df5:a480::/48	65.5k × /64	APNIC	NZ	21st Dec 2020
2001:df5:a4c0::/48	65.5k × /64	APNIC	PH	2nd Jun 2025
2001:df5:a500::/48	65.5k × /64	APNIC	MY	21st Jun 2018
2001:df5:a540::/48	65.5k × /64	APNIC	VN	2nd Jun 2025
2001:df5:a580::/48	65.5k × /64	APNIC	AU	21st Dec 2020
2001:df5:a600::/48	65.5k × /64	APNIC	AU	10th Oct 2016
2001:df5:a640::/48	65.5k × /64	APNIC	ID	2nd Jun 2025
2001:df5:a740::/48	65.5k × /64	APNIC	ID	3rd Jun 2025
2001:df5:a780::/48	65.5k × /64	APNIC	MY	21st Dec 2020
2001:df5:a7c0::/48	65.5k × /64	APNIC	IN	3rd Jun 2025
2001:df5:a800::/48	65.5k × /64	APNIC	NL	7th May 2014
2001:df5:a80::/48	65.5k × /64	APNIC	ID	8th Oct 2020
2001:df5:a8c0::/48	65.5k × /64	APNIC	ID	4th Jun 2025
2001:df5:a900::/48	65.5k × /64	APNIC	HK	26th Jun 2018
2001:df5:a940::/48	65.5k × /64	APNIC	BD	4th Jun 2025
2001:df5:a980::/48	65.5k × /64	APNIC	US	24th Dec 2020
2001:df5:a9c0::/48	65.5k × /64	APNIC	PK	4th Jun 2025
2001:df5:ab00::/48	65.5k × /64	APNIC	AU	26th Jun 2018
2001:df5:abc0::/48	65.5k × /64	APNIC	ID	5th Jun 2025
2001:df5:ac0::/48	65.5k × /64	APNIC	ID	5th Feb 2025
2001:df5:ac40::/48	65.5k × /64	APNIC	PK	5th Jun 2025
2001:df5:ad00::/48	65.5k × /64	APNIC	BD	27th Jun 2018
2001:df5:ad80::/48	65.5k × /64	APNIC	IN	28th Dec 2020
2001:df5:ae40::/48	65.5k × /64	APNIC	BD	6th Jun 2025
2001:df5:ae80::/48	65.5k × /64	APNIC	BD	28th Dec 2020
2001:df5:aec0::/48	65.5k × /64	APNIC	BD	6th Jun 2025
2001:df5:af40::/48	65.5k × /64	APNIC	IN	6th Jun 2025
2001:df5:af80::/47	131k × /64	APNIC	IN	29th Dec 2020
2001:df5:afc0::/48	65.5k × /64	APNIC	IN	6th Jun 2025
2001:df5:b040::/48	65.5k × /64	APNIC	AU	6th Jun 2025
2001:df5:b0c0::/48	65.5k × /64	APNIC	IN	6th Jun 2025
2001:df5:b100::/48	65.5k × /64	APNIC	ID	29th Jun 2018
2001:df5:b180::/48	65.5k × /64	APNIC	IN	29th Dec 2020