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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

2,385 blocks match, ordered by prefix.

Allocated but unannounced blocks, 2001 to 2050 of 2385
Prefix	Addresses	Registry	Country	Allocated
2402:1700::/32	4.3B × /64	APNIC	AU	30th Sept 2011
2402:17c0::/32	4.3B × /64	APNIC	AU	29th Nov 2017
2402:1ce0::/32	4.3B × /64	APNIC	AU	28th Jul 2025
2402:1e40::/32	4.3B × /64	APNIC	AU	1st Dec 2017
2402:2140::/32	4.3B × /64	APNIC	AU	1st Dec 2017
2402:2160::/32	4.3B × /64	APNIC	AU	8th Aug 2025
2402:26a0::/32	4.3B × /64	APNIC	AU	1st Sept 2025
2402:2960::/32	4.3B × /64	APNIC	AU	10th Sept 2025
2402:2b00::/32	4.3B × /64	APNIC	AU	10th Oct 2011
2402:2d20::/32	4.3B × /64	APNIC	AU	21st Sept 2025
2402:3200::/32	4.3B × /64	APNIC	AU	10th May 2010
2402:34c0::/32	4.3B × /64	APNIC	AU	14th Dec 2017
2402:3600::/32	4.3B × /64	APNIC	AU	24th Sept 2010
2402:3680::/32	4.3B × /64	APNIC	AU	2nd Apr 2015
2402:3900::/32	4.3B × /64	APNIC	AU	17th Oct 2011
2402:3980::/32	4.3B × /64	APNIC	AU	3rd Apr 2015
2402:3a00::/32	4.3B × /64	APNIC	AU	24th Sept 2010
2402:3c80::/32	4.3B × /64	APNIC	AU	10th Apr 2015
2402:3e60::/32	4.3B × /64	APNIC	AU	11th Dec 2025
2402:4380::/32	4.3B × /64	APNIC	AU	15th Apr 2015
2402:4a60::/32	4.3B × /64	APNIC	AU	23rd Jan 2026
2402:4c20::/32	4.3B × /64	APNIC	AU	3rd Feb 2026
2402:4c80::/32	4.3B × /64	APNIC	AU	30th Apr 2015
2402:5200::/32	4.3B × /64	APNIC	AU	13th May 2010
2402:5280::/32	4.3B × /64	APNIC	AU	11th May 2015
2402:5360::/32	4.3B × /64	APNIC	AU	29th Mar 2026
2402:53a0::/32	4.3B × /64	APNIC	AU	30th Mar 2026
2402:5480::/32	4.3B × /64	APNIC	AU	12th May 2015
2402:5540::/32	4.3B × /64	APNIC	AU	15th Jan 2018
2402:5600::/32	4.3B × /64	APNIC	AU	13th May 2010
2402:56a0::/32	4.3B × /64	APNIC	AU	10th Apr 2026
2402:58a0::/32	4.3B × /64	APNIC	AU	16th Apr 2026
2402:5c60::/32	4.3B × /64	APNIC	AU	6th May 2026
2402:5d40::/32	4.3B × /64	APNIC	AU	18th Jan 2018
2402:5e60::/32	4.3B × /64	APNIC	AU	13th May 2026
2402:61e0::/32	4.3B × /64	APNIC	AU	5th Jun 2026
2402:6240::/32	4.3B × /64	APNIC	AU	24th Jan 2018
2402:6260::/32	4.3B × /64	APNIC	AU	8th Jun 2026
2402:63c0::/32	4.3B × /64	APNIC	AU	25th Jan 2018
2402:6400::/32	4.3B × /64	APNIC	AU	15th Oct 2009
2402:6500::/32	4.3B × /64	APNIC	AU	28th Oct 2011
2402:6560::/32	4.3B × /64	APNIC	AU	1st Jul 2026
2402:6580::/32	4.3B × /64	APNIC	AU	25th May 2015
2402:65a0::/32	4.3B × /64	APNIC	AU	1st Jul 2026
2402:6600::/32	4.3B × /64	APNIC	AU	17th May 2010
2402:6720::/32	4.3B × /64	APNIC	AU	16th Jul 2026
2402:6900::/32	4.3B × /64	APNIC	AU	28th Oct 2011
2402:69a0::/32	4.3B × /64	APNIC	AU	26th Jul 2026
2402:6b80::/32	4.3B × /64	APNIC	AU	29th May 2015
2402:6d60::/32	4.3B × /64	APNIC	AU	11th Aug 2026