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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

85,458 blocks match, ordered by prefix.

Allocated but unannounced blocks, 42401 to 42450 of 85458
Prefix	Addresses	Registry	Country	Allocated
2001:df6:ee80::/48	65.5k × /64	APNIC	NZ	29th Jun 2021
2001:df6:ef00::/48	65.5k × /64	APNIC	ID	11th Oct 2018
2001:df6:ef40::/48	65.5k × /64	APNIC	ID	15th Apr 2026
2001:df6:ef80::/48	65.5k × /64	APNIC	IN	30th Jun 2021
2001:df6:f000::/48	65.5k × /64	APNIC	NL	29th Oct 2013
2001:df6:f040::/48	65.5k × /64	APNIC	ID	16th Apr 2026
2001:df6:f080::/48	65.5k × /64	APNIC	IN	30th Jun 2021
2001:df6:f0c0::/48	65.5k × /64	APNIC	ID	16th Apr 2026
2001:df6:f100::/48	65.5k × /64	APNIC	ID	12th Oct 2018
2001:df6:f1c0::/48	65.5k × /64	APNIC	IN	17th Apr 2026
2001:df6:f200::/48	65.5k × /64	APNIC	AU	30th Nov 2016
2001:df6:f281::/48	65.5k × /64	APNIC	IN	27th Dec 2024
2001:df6:f2c0::/48	65.5k × /64	APNIC	ID	17th Apr 2026
2001:df6:f300::/48	65.5k × /64	APNIC	AU	12th Oct 2018
2001:df6:f340::/48	65.5k × /64	APNIC	IN	17th Apr 2026
2001:df6:f380::/48	65.5k × /64	APNIC	BD	1st Jul 2021
2001:df6:f3c0::/48	65.5k × /64	APNIC	IN	17th Apr 2026
2001:df6:f400::/48	65.5k × /64	APNIC	CN	26th Oct 2015
2001:df6:f40::/48	65.5k × /64	APNIC	TH	29th Aug 2025
2001:df6:f440::/48	65.5k × /64	APNIC	PH	19th Apr 2026
2001:df6:f480::/48	65.5k × /64	APNIC	HK	1st Jul 2021
2001:df6:f4c0::/48	65.5k × /64	APNIC	BD	21st Apr 2026
2001:df6:f500::/48	65.5k × /64	APNIC	AU	14th Oct 2018
2001:df6:f540::/48	65.5k × /64	APNIC	VN	21st Apr 2026
2001:df6:f5c0::/48	65.5k × /64	APNIC	IN	21st Apr 2026
2001:df6:f600::/48	65.5k × /64	APNIC	ID	30th Nov 2016
2001:df6:f680::/48	65.5k × /64	APNIC	BD	5th Jul 2021
2001:df6:f6c0::/48	65.5k × /64	APNIC	BD	22nd Apr 2026
2001:df6:f700::/48	65.5k × /64	APNIC	NP	15th Oct 2018
2001:df6:f740::/48	65.5k × /64	APNIC	IN	22nd Apr 2026
2001:df6:f7c0::/48	65.5k × /64	APNIC	ID	22nd Apr 2026
2001:df6:f800::/48	65.5k × /64	APNIC	AU	1st Jul 2014
2001:df6:f80::/48	65.5k × /64	APNIC	IN	24th Feb 2021
2001:df6:f840::/48	65.5k × /64	APNIC	BD	24th Apr 2026
2001:df6:f880::/48	65.5k × /64	APNIC	IN	6th Jul 2021
2001:df6:f8c0::/48	65.5k × /64	APNIC	BD	24th Apr 2026
2001:df6:f940::/48	65.5k × /64	APNIC	ID	24th Apr 2026
2001:df6:f980::/48	65.5k × /64	APNIC	IN	6th Jul 2021
2001:df6:f9c0::/48	65.5k × /64	APNIC	ID	24th Apr 2026
2001:df6:fa00::/48	65.5k × /64	APNIC	IN	30th Nov 2016
2001:df6:fa40::/48	65.5k × /64	APNIC	ID	27th Apr 2026
2001:df6:fa80::/48	65.5k × /64	APNIC	BD	7th Jul 2021
2001:df6:fac0::/48	65.5k × /64	APNIC	IN	27th Apr 2026
2001:df6:fb00::/48	65.5k × /64	APNIC	AU	16th Oct 2018
2001:df6:fb40::/48	65.5k × /64	APNIC	ID	28th Apr 2026
2001:df6:fb80::/48	65.5k × /64	APNIC	IN	7th Jul 2021
2001:df6:fbc0::/48	65.5k × /64	APNIC	ID	28th Apr 2026
2001:df6:fc00::/48	65.5k × /64	APNIC	AU	27th Oct 2015
2001:df6:fc40::/48	65.5k × /64	APNIC	BD	29th Apr 2026
2001:df6:fcc0::/48	65.5k × /64	APNIC	ID	29th Apr 2026