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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 in India
2,802 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 203.82.248.0/23 | 512 | APNIC |  IN | 17th Jan 2007 |
| 203.82.4.0/22 | 1k | APNIC | IN | 17th Jan 2007 |
| 203.9.212.0/23 | 512 | APNIC | IN | 5th Aug 2025 |
| 210.16.76.0/22 | 1k | APNIC | IN | 21st Jan 2016 |
| 210.87.67.0/24 | 256 | APNIC | IN | 1st Dec 2023 |
| 210.89.47.0/24 | 256 | APNIC | IN | 22nd Jun 2006 |
| 210.89.50.0/24 | 256 | APNIC | IN | 22nd Jun 2006 |
| 210.89.53.0/24 | 256 | APNIC | IN | 22nd Jun 2006 |
| 210.89.57.0/24 | 256 | APNIC | IN | 22nd Jun 2006 |
| 210.89.60.0/24 | 256 | APNIC | IN | 22nd Jun 2006 |
| 218.100.48.0/23 | 512 | APNIC | IN | 26th Sept 2007 |
| 220.158.152.0/22 | 1k | APNIC | IN | 6th Oct 2015 |
| 223.196.200.0/21 | 2k | APNIC | IN | 30th Jul 2010 |
| 223.196.208.0/20 | 4.1k | APNIC | IN | 30th Jul 2010 |
| 223.196.224.0/19 | 8.2k | APNIC | IN | 30th Jul 2010 |
| 223.26.32.0/20 | 4.1k | APNIC | IN | 19th Aug 2010 |
| 2400:10a0::/32 | 4.3B × /64 | APNIC | IN | 7th Oct 2021 |
| 2400:14a0::/32 | 4.3B × /64 | APNIC | IN | 14th Oct 2021 |
| 2400:15e0::/32 | 4.3B × /64 | APNIC | IN | 19th Oct 2021 |
| 2400:1600::/32 | 4.3B × /64 | APNIC | IN | 10th Mar 2010 |
| 2400:1720::/32 | 4.3B × /64 | APNIC | IN | 21st Oct 2021 |
| 2400:1960::/32 | 4.3B × /64 | APNIC | IN | 29th Oct 2021 |
| 2400:1a60::/32 | 4.3B × /64 | APNIC | IN | 1st Nov 2021 |
| 2400:1b20::/32 | 4.3B × /64 | APNIC | IN | 2nd Nov 2021 |
| 2400:1c60::/32 | 4.3B × /64 | APNIC | IN | 3rd Nov 2021 |
| 2400:1ca0::/32 | 4.3B × /64 | APNIC | IN | 3rd Nov 2021 |
| 2400:3180::/32 | 4.3B × /64 | APNIC | IN | 11th Oct 2013 |
| 2400:3380::/32 | 4.3B × /64 | APNIC | IN | 17th Oct 2013 |
| 2400:3420::/32 | 4.3B × /64 | APNIC | IN | 18th Nov 2021 |
| 2400:34a0::/32 | 4.3B × /64 | APNIC | IN | 18th Nov 2021 |
| 2400:3560::/32 | 4.3B × /64 | APNIC | IN | 22nd Nov 2021 |
| 2400:35a0::/32 | 4.3B × /64 | APNIC | IN | 22nd Nov 2021 |
| 2400:36e0::/32 | 4.3B × /64 | APNIC | IN | 23rd Nov 2021 |
| 2400:3720::/32 | 4.3B × /64 | APNIC | IN | 23rd Nov 2021 |
| 2400:3a20::/32 | 4.3B × /64 | APNIC | IN | 2nd Dec 2021 |
| 2400:3b80::/32 | 4.3B × /64 | APNIC | IN | 23rd Oct 2013 |
| 2400:3ba0::/32 | 4.3B × /64 | APNIC | IN | 6th Dec 2021 |
| 2400:3de0::/32 | 4.3B × /64 | APNIC | IN | 10th Dec 2021 |
| 2400:4720::/32 | 4.3B × /64 | APNIC | IN | 24th Dec 2021 |
| 2400:4760::/32 | 4.3B × /64 | APNIC | IN | 24th Dec 2021 |
| 2400:4820::/32 | 4.3B × /64 | APNIC | IN | 27th Dec 2021 |
| 2400:4860::/32 | 4.3B × /64 | APNIC | IN | 28th Dec 2021 |
| 2400:48e0::/32 | 4.3B × /64 | APNIC | IN | 30th Dec 2021 |
| 2400:4960::/32 | 4.3B × /64 | APNIC | IN | 31st Dec 2021 |
| 2400:49e0::/32 | 4.3B × /64 | APNIC | IN | 3rd Jan 2022 |
| 2400:4b60::/32 | 4.3B × /64 | APNIC | IN | 6th Jan 2022 |
| 2400:4c20::/32 | 4.3B × /64 | APNIC | IN | 11th Jan 2022 |
| 2400:4f60::/32 | 4.3B × /64 | APNIC | IN | 18th Jan 2022 |
| 2400:4fa0::/32 | 4.3B × /64 | APNIC | IN | 18th Jan 2022 |
| 2400:4fe0::/32 | 4.3B × /64 | APNIC | IN | 18th Jan 2022 |