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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

85,392 blocks match, ordered by prefix.

Allocated but unannounced blocks, 39951 to 40000 of 85392
Prefix	Addresses	Registry	Country	Allocated
2001:df3:8000::/48	65.5k × /64	APNIC	ID	19th Mar 2013
2001:df3:8040::/48	65.5k × /64	APNIC	IN	26th Feb 2024
2001:df3:8080::/48	65.5k × /64	APNIC	ID	21st Apr 2020
2001:df3:80::/48	65.5k × /64	APNIC	PH	28th Feb 2020
2001:df3:8100::/48	65.5k × /64	APNIC	ID	13th Dec 2017
2001:df3:8140::/48	65.5k × /64	APNIC	PK	28th Feb 2024
2001:df3:8180::/48	65.5k × /64	APNIC	ID	21st Apr 2020
2001:df3:81c0::/48	65.5k × /64	APNIC	BD	28th Feb 2024
2001:df3:8200::/48	65.5k × /64	APNIC	HK	26th Jul 2016
2001:df3:8240::/48	65.5k × /64	APNIC	IN	29th Feb 2024
2001:df3:8280::/48	65.5k × /64	APNIC	AU	21st Apr 2020
2001:df3:8300::/48	65.5k × /64	APNIC	ID	13th Dec 2017
2001:df3:8340::/48	65.5k × /64	APNIC	ID	4th Mar 2024
2001:df3:8380::/48	65.5k × /64	APNIC	PK	21st Apr 2020
2001:df3:83c0::/48	65.5k × /64	APNIC	ID	4th Mar 2024
2001:df3:840::/48	65.5k × /64	APNIC	SG	16th Oct 2023
2001:df3:8480::/48	65.5k × /64	APNIC	ID	22nd Apr 2020
2001:df3:8500::/48	65.5k × /64	APNIC	ID	13th Dec 2017
2001:df3:8580::/48	65.5k × /64	APNIC	ID	22nd Apr 2020
2001:df3:85c0::/48	65.5k × /64	APNIC	IN	5th Mar 2024
2001:df3:8640::/48	65.5k × /64	APNIC	IN	5th Mar 2024
2001:df3:8680::/48	65.5k × /64	APNIC	ID	22nd Apr 2020
2001:df3:86c0::/48	65.5k × /64	APNIC	IN	5th Mar 2024
2001:df3:8700::/48	65.5k × /64	APNIC	ID	13th Dec 2017
2001:df3:8740::/48	65.5k × /64	APNIC	AU	5th Mar 2024
2001:df3:8780::/48	65.5k × /64	APNIC	ID	22nd Apr 2020
2001:df3:87c0::/48	65.5k × /64	APNIC	IN	6th Mar 2024
2001:df3:8840::/48	65.5k × /64	APNIC	IN	7th Mar 2024
2001:df3:88c0::/48	65.5k × /64	APNIC	MM	8th Mar 2024
2001:df3:8900::/48	65.5k × /64	APNIC	NC	13th Dec 2017
2001:df3:8940::/48	65.5k × /64	APNIC	MY	8th Mar 2024
2001:df3:8980::/48	65.5k × /64	APNIC	PH	23rd Apr 2020
2001:df3:89c0::/48	65.5k × /64	APNIC	BD	11th Mar 2024
2001:df3:8a00::/48	65.5k × /64	APNIC	VN	26th Jul 2016
2001:df3:8a40::/48	65.5k × /64	APNIC	IN	11th Mar 2024
2001:df3:8b00::/48	65.5k × /64	APNIC	AU	13th Dec 2017
2001:df3:8c0::/48	65.5k × /64	APNIC	BD	16th Oct 2023
2001:df3:8c40::/48	65.5k × /64	APNIC	AU	13th Mar 2024
2001:df3:8c80::/48	65.5k × /64	APNIC	AU	24th Apr 2020
2001:df3:8cc0::/48	65.5k × /64	APNIC	ID	14th Mar 2024
2001:df3:8d00::/48	65.5k × /64	APNIC	ID	14th Dec 2017
2001:df3:8d40::/48	65.5k × /64	APNIC	BD	15th Mar 2024
2001:df3:8e00::/48	65.5k × /64	APNIC	VN	26th Jul 2016
2001:df3:8ec0::/48	65.5k × /64	APNIC	AU	18th Mar 2024
2001:df3:8f00::/48	65.5k × /64	APNIC	ID	14th Dec 2017
2001:df3:8f40::/48	65.5k × /64	APNIC	ID	18th Mar 2024
2001:df3:8fc0::/48	65.5k × /64	APNIC	IN	18th Mar 2024
2001:df3:9040::/48	65.5k × /64	APNIC	ID	18th Mar 2024
2001:df3:9080::/48	65.5k × /64	APNIC	AU	27th Apr 2020
2001:df3:9100::/48	65.5k × /64	APNIC	HK	14th Dec 2017