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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

6,735 blocks match, ordered by prefix.

Allocated but unannounced blocks, 4951 to 5000 of 6735
Prefix	Addresses	Registry	Country	Allocated
2403:fc40::/32	4.3B × /64	APNIC	CN	25th Nov 2018
2403:fe40::/32	4.3B × /64	APNIC	CN	26th Nov 2018
2403:fe80::/32	4.3B × /64	APNIC	CN	16th Dec 2015
2403:fec0::/32	4.3B × /64	APNIC	CN	26th Nov 2018
2403:ff80::/32	4.3B × /64	APNIC	CN	16th Dec 2015
2403:ffc1::/32	4.3B × /64	APNIC	CN	26th Nov 2023
2404:100::/32	4.3B × /64	APNIC	CN	23rd May 2012
2404:1080::/32	4.3B × /64	APNIC	CN	25th Dec 2015
2404:10c0::/32	4.3B × /64	APNIC	CN	6th Dec 2018
2404:1180::/32	4.3B × /64	APNIC	CN	28th Dec 2015
2404:14c0::/32	4.3B × /64	APNIC	CN	10th Dec 2018
2404:158::/32	4.3B × /64	APNIC	CN	22nd Jun 2006
2404:1880::/32	4.3B × /64	APNIC	CN	5th Jan 2016
2404:1cc0::/32	4.3B × /64	APNIC	CN	17th Dec 2018
2404:1e80::/32	4.3B × /64	APNIC	CN	8th Jan 2016
2404:1f40::/32	4.3B × /64	APNIC	CN	19th Dec 2018
2404:21c0::/32	4.3B × /64	APNIC	CN	20th Dec 2018
2404:240::/32	4.3B × /64	APNIC	CN	26th Nov 2018
2404:280::/32	4.3B × /64	APNIC	CN	16th Dec 2015
2404:30c0::/32	4.3B × /64	APNIC	CN	2nd Jan 2019
2404:3140::/32	4.3B × /64	APNIC	CN	2nd Jan 2019
2404:31c0::/32	4.3B × /64	APNIC	CN	2nd Jan 2019
2404:3240::/32	4.3B × /64	APNIC	CN	2nd Jan 2019
2404:32c0::/32	4.3B × /64	APNIC	CN	2nd Jan 2019
2404:3300::/32	4.3B × /64	APNIC	CN	19th Jun 2012
2404:3340::/32	4.3B × /64	APNIC	CN	2nd Jan 2019
2404:3480::/32	4.3B × /64	APNIC	CN	29th Jan 2016
2404:35c0::/32	4.3B × /64	APNIC	CN	4th Jan 2019
2404:3640::/32	4.3B × /64	APNIC	CN	4th Jan 2019
2404:36c0::/32	4.3B × /64	APNIC	CN	4th Jan 2019
2404:3740::/32	4.3B × /64	APNIC	CN	4th Jan 2019
2404:37c0::/32	4.3B × /64	APNIC	CN	4th Jan 2019
2404:3840::/32	4.3B × /64	APNIC	CN	6th Jan 2019
2404:3940::/32	4.3B × /64	APNIC	CN	7th Jan 2019
2404:3f40::/32	4.3B × /64	APNIC	CN	14th Jan 2019
2404:41c0::/32	4.3B × /64	APNIC	CN	15th Jan 2019
2404:440::/32	4.3B × /64	APNIC	CN	27th Nov 2018
2404:4540::/32	4.3B × /64	APNIC	CN	18th Jan 2019
2404:4740::/32	4.3B × /64	APNIC	CN	21st Jan 2019
2404:480::/32	4.3B × /64	APNIC	CN	17th Dec 2015
2404:4d00::/32	4.3B × /64	APNIC	CN	28th Jun 2012
2404:51c0::/32	4.3B × /64	APNIC	CN	30th Jan 2019
2404:5640::/32	4.3B × /64	APNIC	CN	31st Jan 2019
2404:5a80::/32	4.3B × /64	APNIC	CN	22nd Feb 2016
2404:5b00::/32	4.3B × /64	APNIC	CN	4th Jul 2012
2404:5d00::/32	4.3B × /64	APNIC	CN	4th Jul 2012
2404:6000::/32	4.3B × /64	APNIC	CN	18th Dec 2008
2404:6100::/32	4.3B × /64	APNIC	CN	4th Jul 2012
2404:65c0::/32	4.3B × /64	APNIC	CN	14th Feb 2019
2404:680::/32	4.3B × /64	APNIC	CN	18th Dec 2015