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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

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Countries with the most unannounced blocks, largest first.

Unannounced blocks in China

6,735 blocks match, ordered by prefix.

Allocated but unannounced blocks, 4301 to 4350 of 6735
Prefix	Addresses	Registry	Country	Allocated
2401:58a0::/32	4.3B × /64	APNIC	CN	8th Dec 2023
2401:59c0::/32	4.3B × /64	APNIC	CN	20th Jun 2017
2401:5b40::/32	4.3B × /64	APNIC	CN	21st Jun 2017
2401:5c60::/32	4.3B × /64	APNIC	CN	19th Dec 2023
2401:5c80::/32	4.3B × /64	APNIC	CN	18th Aug 2014
2401:5fa0::/32	4.3B × /64	APNIC	CN	28th Dec 2023
2401:60::/32	4.3B × /64	APNIC	CN	19th May 2023
2401:620::/32	4.3B × /64	APNIC	CN	5th Jun 2023
2401:70e0::/32	4.3B × /64	APNIC	CN	2nd Jan 2024
2401:7180::/32	4.3B × /64	APNIC	CN	21st Aug 2014
2401:7240::/32	4.3B × /64	APNIC	CN	29th Jun 2017
2401:7320::/32	4.3B × /64	APNIC	CN	5th Jan 2024
2401:7360::/32	4.3B × /64	APNIC	CN	10th Jan 2024
2401:73a0::/32	4.3B × /64	APNIC	CN	10th Jan 2024
2401:7580::/32	4.3B × /64	APNIC	CN	26th Aug 2014
2401:7680::/32	4.3B × /64	APNIC	CN	26th Aug 2014
2401:7780::/32	4.3B × /64	APNIC	CN	26th Aug 2014
2401:77e0::/32	4.3B × /64	APNIC	CN	18th Jan 2024
2401:7820::/32	4.3B × /64	APNIC	CN	18th Jan 2024
2401:7880::/32	4.3B × /64	APNIC	CN	26th Aug 2014
2401:78e0::/32	4.3B × /64	APNIC	CN	19th Jan 2024
2401:7980::/32	4.3B × /64	APNIC	CN	26th Aug 2014
2401:7a00::/32	4.3B × /64	APNIC	CN	13th Apr 2010
2401:7a80::/32	4.3B × /64	APNIC	CN	26th Aug 2014
2401:7b80::/32	4.3B × /64	APNIC	CN	26th Aug 2014
2401:7bc0::/32	4.3B × /64	APNIC	CN	6th Jul 2017
2401:7c0::/32	4.3B × /64	APNIC	CN	27th Apr 2017
2401:7c80::/32	4.3B × /64	APNIC	CN	26th Aug 2014
2401:7cc0::/32	4.3B × /64	APNIC	CN	9th Jul 2017
2401:7ce0::/32	4.3B × /64	APNIC	CN	1st Feb 2024
2401:7d80::/32	4.3B × /64	APNIC	CN	26th Aug 2014
2401:7f80::/32	4.3B × /64	APNIC	CN	28th Aug 2014
2401:80::/32	4.3B × /64	APNIC	CN	15th May 2014
2401:8200::/32	4.3B × /64	APNIC	CN	13th Apr 2010
2401:82c0::/32	4.3B × /64	APNIC	CN	14th Jul 2017
2401:8380::/32	4.3B × /64	APNIC	CN	2nd Sept 2014
2401:8540::/32	4.3B × /64	APNIC	CN	17th Jul 2017
2401:8600::/32	4.3B × /64	APNIC	CN	13th Apr 2010
2401:8720::/32	4.3B × /64	APNIC	CN	7th Mar 2024
2401:87e0::/32	4.3B × /64	APNIC	CN	12th Mar 2024
2401:8820::/31	8.6B × /64	APNIC	CN	12th Mar 2024
2401:8840::/32	4.3B × /64	APNIC	CN	20th Jul 2017
2401:8da0::/32	4.3B × /64	APNIC	CN	27th Mar 2024
2401:8f40::/32	4.3B × /64	APNIC	CN	26th Jul 2017
2401:8fc0::/32	4.3B × /64	APNIC	CN	27th Jul 2017
2401:90a0::/32	4.3B × /64	APNIC	CN	3rd Apr 2024
2401:9260::/32	4.3B × /64	APNIC	CN	9th Apr 2024
2401:92a0::/32	4.3B × /64	APNIC	CN	9th Apr 2024
2401:92e0::/32	4.3B × /64	APNIC	CN	9th Apr 2024
2401:9340::/32	4.3B × /64	APNIC	CN	1st Aug 2017