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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 42351 to 42400 of 85458
Prefix	Addresses	Registry	Country	Allocated
2001:df6:dcc0::/48	65.5k × /64	APNIC	ID	1st Apr 2026
2001:df6:dd00::/48	65.5k × /64	APNIC	VN	4th Oct 2018
2001:df6:dd40::/48	65.5k × /64	APNIC	ID	1st Apr 2026
2001:df6:dd80::/48	65.5k × /64	APNIC	IN	21st Jun 2021
2001:df6:ddc0::/48	65.5k × /64	APNIC	BD	1st Apr 2026
2001:df6:de40::/48	65.5k × /64	APNIC	IN	1st Apr 2026
2001:df6:de80::/48	65.5k × /64	APNIC	BD	22nd Jun 2021
2001:df6:dec0::/48	65.5k × /64	APNIC	ID	1st Apr 2026
2001:df6:df40::/48	65.5k × /64	APNIC	ID	2nd Apr 2026
2001:df6:df80::/48	65.5k × /64	APNIC	IN	23rd Jun 2021
2001:df6:dfc0::/48	65.5k × /64	APNIC	BD	2nd Apr 2026
2001:df6:e0c0::/48	65.5k × /64	APNIC	ID	7th Apr 2026
2001:df6:e140::/48	65.5k × /64	APNIC	ID	7th Apr 2026
2001:df6:e200::/48	65.5k × /64	APNIC	NZ	29th Nov 2016
2001:df6:e280::/48	65.5k × /64	APNIC	IN	24th Jun 2021
2001:df6:e2c0::/48	65.5k × /64	APNIC	IN	7th Apr 2026
2001:df6:e300::/48	65.5k × /64	APNIC	IN	9th Oct 2018
2001:df6:e340::/48	65.5k × /64	APNIC	IN	7th Apr 2026
2001:df6:e380::/48	65.5k × /64	APNIC	IN	24th Jun 2021
2001:df6:e40::/48	65.5k × /64	APNIC	MY	28th Aug 2025
2001:df6:e440::/48	65.5k × /64	APNIC	ID	9th Apr 2026
2001:df6:e480::/48	65.5k × /64	APNIC	IN	24th Jun 2021
2001:df6:e4c0::/48	65.5k × /64	APNIC	ID	9th Apr 2026
2001:df6:e540::/48	65.5k × /64	APNIC	BD	10th Apr 2026
2001:df6:e5c0::/48	65.5k × /64	APNIC	AU	10th Apr 2026
2001:df6:e600::/48	65.5k × /64	APNIC	ES	29th Nov 2016
2001:df6:e640::/48	65.5k × /64	APNIC	IN	10th Apr 2026
2001:df6:e680::/48	65.5k × /64	APNIC	AU	25th Jun 2021
2001:df6:e6c0::/48	65.5k × /64	APNIC	ID	10th Apr 2026
2001:df6:e700::/48	65.5k × /64	APNIC	ID	10th Oct 2018
2001:df6:e740::/48	65.5k × /64	APNIC	ID	10th Apr 2026
2001:df6:e780::/48	65.5k × /64	APNIC	ID	28th Jun 2021
2001:df6:e80::/48	65.5k × /64	APNIC	NP	23rd Feb 2021
2001:df6:e840::/48	65.5k × /64	APNIC	ID	10th Apr 2026
2001:df6:e880::/48	65.5k × /64	APNIC	ID	28th Jun 2021
2001:df6:e8c0::/48	65.5k × /64	APNIC	ID	11th Apr 2026
2001:df6:e940::/48	65.5k × /64	APNIC	BD	13th Apr 2026
2001:df6:e9c0::/48	65.5k × /64	APNIC	IN	13th Apr 2026
2001:df6:ea40::/48	65.5k × /64	APNIC	BD	13th Apr 2026
2001:df6:eac0::/48	65.5k × /64	APNIC	ID	13th Apr 2026
2001:df6:eb40::/48	65.5k × /64	APNIC	TH	13th Apr 2026
2001:df6:eb80::/48	65.5k × /64	APNIC	IN	28th Jun 2021
2001:df6:ebc0::/48	65.5k × /64	APNIC	MY	13th Apr 2026
2001:df6:ec00::/48	65.5k × /64	APNIC	ID	23rd Oct 2015
2001:df6:ec40::/48	65.5k × /64	APNIC	IN	13th Apr 2026
2001:df6:ec80::/48	65.5k × /64	APNIC	PK	29th Jun 2021
2001:df6:ecc0::/48	65.5k × /64	APNIC	IN	13th Apr 2026
2001:df6:ed40::/48	65.5k × /64	APNIC	IN	13th Apr 2026
2001:df6:ee00::/48	65.5k × /64	APNIC	AU	29th Nov 2016
2001:df6:ee40::/48	65.5k × /64	APNIC	IN	14th Apr 2026