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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 42101 to 42150 of 85458
Prefix	Addresses	Registry	Country	Allocated
2001:df6:8a00::/48	65.5k × /64	APNIC	ID	16th Nov 2016
2001:df6:8a40::/48	65.5k × /64	APNIC	IN	1st Jan 2026
2001:df6:8a80::/48	65.5k × /64	APNIC	IN	21st Apr 2021
2001:df6:8ac0::/48	65.5k × /64	APNIC	ID	2nd Jan 2026
2001:df6:8b00::/48	65.5k × /64	APNIC	TH	11th Sept 2018
2001:df6:8b40::/48	65.5k × /64	APNIC	ID	5th Jan 2026
2001:df6:8b80::/48	65.5k × /64	APNIC	MY	22nd Apr 2021
2001:df6:8bc0::/48	65.5k × /64	APNIC	ID	5th Jan 2026
2001:df6:8c0::/48	65.5k × /64	APNIC	ID	26th Aug 2025
2001:df6:8c40::/48	65.5k × /64	APNIC	ID	5th Jan 2026
2001:df6:8d40::/48	65.5k × /64	APNIC	ID	7th Jan 2026
2001:df6:8d80::/48	65.5k × /64	APNIC	IN	22nd Apr 2021
2001:df6:8dc0::/48	65.5k × /64	APNIC	ID	8th Jan 2026
2001:df6:8e00::/48	65.5k × /64	APNIC	ID	16th Nov 2016
2001:df6:8e40::/48	65.5k × /64	APNIC	IN	8th Jan 2026
2001:df6:8ec0::/48	65.5k × /64	APNIC	IN	8th Jan 2026
2001:df6:8f40::/48	65.5k × /64	APNIC	BD	9th Jan 2026
2001:df6:8fc0::/48	65.5k × /64	APNIC	PH	9th Jan 2026
2001:df6:9040::/48	65.5k × /64	APNIC	IN	12th Jan 2026
2001:df6:9080::/48	65.5k × /64	APNIC	AU	25th Apr 2021
2001:df6:90c0::/48	65.5k × /64	APNIC	IN	12th Jan 2026
2001:df6:9100::/48	65.5k × /64	APNIC	IN	11th Sept 2018
2001:df6:9140::/48	65.5k × /64	APNIC	ID	12th Jan 2026
2001:df6:9180::/48	65.5k × /64	APNIC	SG	26th Apr 2021
2001:df6:91c0::/48	65.5k × /64	APNIC	IN	12th Jan 2026
2001:df6:9200::/48	65.5k × /64	APNIC	ID	16th Nov 2016
2001:df6:9240::/48	65.5k × /64	APNIC	ID	13th Jan 2026
2001:df6:9300::/48	65.5k × /64	APNIC	AU	11th Sept 2018
2001:df6:93c0::/48	65.5k × /64	APNIC	IN	14th Jan 2026
2001:df6:9400::/48	65.5k × /64	APNIC	IN	9th Oct 2015
2001:df6:940::/48	65.5k × /64	APNIC	ID	26th Aug 2025
2001:df6:9440::/48	65.5k × /64	APNIC	BD	14th Jan 2026
2001:df6:9480::/48	65.5k × /64	APNIC	BD	27th Apr 2021
2001:df6:94c0::/48	65.5k × /64	APNIC	IN	14th Jan 2026
2001:df6:9540::/48	65.5k × /64	APNIC	ID	15th Jan 2026
2001:df6:9580::/48	65.5k × /64	APNIC	IN	28th Apr 2021
2001:df6:95c0::/48	65.5k × /64	APNIC	ID	15th Jan 2026
2001:df6:9600::/48	65.5k × /64	APNIC	ID	16th Nov 2016
2001:df6:9640::/48	65.5k × /64	APNIC	IN	15th Jan 2026
2001:df6:9680::/48	65.5k × /64	APNIC	TH	29th Apr 2021
2001:df6:9700::/48	65.5k × /64	APNIC	ID	12th Sept 2018
2001:df6:9740::/48	65.5k × /64	APNIC	ID	15th Jan 2026
2001:df6:9780::/48	65.5k × /64	APNIC	VN	29th Apr 2021
2001:df6:97c0::/48	65.5k × /64	APNIC	ID	15th Jan 2026
2001:df6:9800::/48	65.5k × /64	APNIC	AU	23rd Jun 2014
2001:df6:9840::/48	65.5k × /64	APNIC	ID	18th Jan 2026
2001:df6:9880::/48	65.5k × /64	APNIC	BD	30th Apr 2021
2001:df6:98c0::/48	65.5k × /64	APNIC	BD	19th Jan 2026
2001:df6:9900::/48	65.5k × /64	APNIC	BD	12th Sept 2018
2001:df6:9940::/48	65.5k × /64	APNIC	BD	19th Jan 2026