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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 103.173.16.0/23 | 512 | APNIC |  IN | 9th Sept 2021 |
| 103.173.190.0/24 | 256 | APNIC | IN | 27th Sept 2021 |
| 103.173.198.0/23 | 512 | APNIC | IN | 27th Sept 2021 |
| 103.173.238.0/23 | 512 | APNIC | IN | 29th Sept 2021 |
| 103.173.249.0/24 | 256 | APNIC | IN | 30th Sept 2021 |
| 103.173.41.0/24 | 256 | APNIC | IN | 14th Sept 2021 |
| 103.173.64.0/23 | 512 | APNIC | IN | 15th Sept 2021 |
| 103.173.80.0/23 | 512 | APNIC | IN | 16th Sept 2021 |
| 103.174.240.0/23 | 512 | APNIC | IN | 21st Oct 2021 |
| 103.174.42.0/23 | 512 | APNIC | IN | 5th Oct 2021 |
| 103.175.0.0/23 | 512 | APNIC | IN | 22nd Oct 2021 |
| 103.175.104.0/24 | 256 | APNIC | IN | 28th Oct 2021 |
| 103.175.106.0/23 | 512 | APNIC | IN | 28th Oct 2021 |
| 103.175.12.0/23 | 512 | APNIC | IN | 22nd Oct 2021 |
| 103.175.252.0/23 | 512 | APNIC | IN | 8th Nov 2021 |
| 103.176.142.0/24 | 256 | APNIC | IN | 16th Nov 2021 |
| 103.176.192.0/23 | 512 | APNIC | IN | 18th Nov 2021 |
| 103.176.230.0/23 | 512 | APNIC | IN | 23rd Nov 2021 |
| 103.176.62.0/23 | 512 | APNIC | IN | 12th Nov 2021 |
| 103.176.8.0/23 | 512 | APNIC | IN | 9th Nov 2021 |
| 103.177.174.0/23 | 512 | APNIC | IN | 6th Dec 2021 |
| 103.177.22.0/23 | 512 | APNIC | IN | 24th Nov 2021 |
| 103.177.254.0/24 | 256 | APNIC | IN | 13th Dec 2021 |
| 103.177.30.0/24 | 256 | APNIC | IN | 25th Nov 2021 |
| 103.178.106.0/23 | 512 | APNIC | IN | 23rd Dec 2021 |
| 103.178.110.0/23 | 512 | APNIC | IN | 23rd Dec 2021 |
| 103.178.138.0/23 | 512 | APNIC | IN | 24th Dec 2021 |
| 103.178.178.0/23 | 512 | APNIC | IN | 28th Dec 2021 |
| 103.178.184.0/23 | 512 | APNIC | IN | 28th Dec 2021 |
| 103.178.200.0/23 | 512 | APNIC | IN | 29th Dec 2021 |
| 103.178.246.0/23 | 512 | APNIC | IN | 31st Dec 2021 |
| 103.179.12.0/24 | 256 | APNIC | IN | 4th Jan 2022 |
| 103.179.234.0/23 | 512 | APNIC | IN | 18th Jan 2022 |
| 103.179.4.0/23 | 512 | APNIC | IN | 3rd Jan 2022 |
| 103.179.42.0/23 | 512 | APNIC | IN | 6th Jan 2022 |
| 103.179.98.0/23 | 512 | APNIC | IN | 11th Jan 2022 |
| 103.18.104.0/22 | 1k | APNIC | IN | 14th Mar 2013 |
| 103.18.156.0/22 | 1k | APNIC | IN | 18th Mar 2013 |
| 103.18.216.0/22 | 1k | APNIC | IN | 22nd Mar 2013 |
| 103.180.172.0/23 | 512 | APNIC | IN | 26th Jan 2022 |
| 103.180.2.0/23 | 512 | APNIC | IN | 20th Jan 2022 |
| 103.180.218.0/23 | 512 | APNIC | IN | 28th Jan 2022 |
| 103.180.249.0/24 | 256 | APNIC | IN | 1st Feb 2022 |
| 103.180.66.0/24 | 256 | APNIC | IN | 24th Jan 2022 |
| 103.180.92.0/23 | 512 | APNIC | IN | 24th Jan 2022 |
| 103.181.236.0/23 | 512 | APNIC | IN | 16th Feb 2022 |
| 103.181.38.0/23 | 512 | APNIC | IN | 3rd Feb 2022 |
| 103.181.94.0/23 | 512 | APNIC | IN | 8th Feb 2022 |
| 103.182.108.0/23 | 512 | APNIC | IN | 22nd Feb 2022 |
| 103.182.178.0/23 | 512 | APNIC | IN | 25th Feb 2022 |