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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 163.128.232.0/23 | 512 | APNIC |  IN | 14th Apr 2026 |
| 163.128.250.0/23 | 512 | APNIC | IN | 17th Apr 2026 |
| 163.128.67.0/24 | 256 | APNIC | IN | 16th Mar 2026 |
| 163.128.68.0/24 | 256 | APNIC | IN | 16th Mar 2026 |
| 163.128.80.0/23 | 512 | APNIC | IN | 18th Mar 2026 |
| 163.128.84.0/23 | 512 | APNIC | IN | 18th Mar 2026 |
| 163.223.168.0/23 | 512 | APNIC | IN | 20th Mar 2025 |
| 163.223.170.0/23 | 512 | APNIC | IN | 20th Mar 2025 |
| 163.223.242.0/23 | 512 | APNIC | IN | 4th Apr 2025 |
| 163.223.252.0/23 | 512 | APNIC | IN | 8th Apr 2025 |
| 163.223.82.0/23 | 512 | APNIC | IN | 11th Mar 2025 |
| 163.227.204.0/24 | 256 | APNIC | IN | 1st May 2025 |
| 163.227.210.0/23 | 512 | APNIC | IN | 1st May 2025 |
| 163.227.222.0/23 | 512 | APNIC | IN | 2nd May 2025 |
| 163.47.152.0/22 | 1k | APNIC | IN | 30th May 2014 |
| 163.52.36.0/23 | 512 | APNIC | IN | 20th Aug 2026 |
| 163.52.38.0/24 | 256 | APNIC | IN | 21st Aug 2026 |
| 163.61.59.0/24 | 256 | APNIC | IN | 6th Feb 2025 |
| 165.101.138.0/23 | 512 | APNIC | IN | 4th Jul 2025 |
| 165.101.163.0/24 | 256 | APNIC | IN | 10th Jul 2025 |
| 165.101.59.0/24 | 256 | APNIC | IN | 25th Jun 2025 |
| 165.42.0.0/15 | 131k | APNIC | IN | 11th Feb 1993 |
| 165.99.10.0/23 | 512 | APNIC | IN | 7th May 2025 |
| 165.99.103.0/24 | 256 | APNIC | IN | 21st May 2025 |
| 165.99.110.0/23 | 512 | APNIC | IN | 22nd May 2025 |
| 165.99.12.0/23 | 512 | APNIC | IN | 7th May 2025 |
| 165.99.230.0/23 | 512 | APNIC | IN | 9th Jun 2025 |
| 165.99.242.0/23 | 512 | APNIC | IN | 11th Jun 2025 |
| 170.248.12.0/23 | 512 | APNIC | IN | 24th Jan 1994 |
| 170.248.138.0/23 | 512 | APNIC | IN | 24th Jan 1994 |
| 170.248.190.0/23 | 512 | APNIC | IN | 24th Jan 1994 |
| 170.248.46.0/23 | 512 | APNIC | IN | 24th Jan 1994 |
| 170.251.142.0/23 | 512 | APNIC | IN | 24th Jan 1994 |
| 170.251.150.0/23 | 512 | APNIC | IN | 24th Jan 1994 |
| 170.251.156.0/23 | 512 | APNIC | IN | 24th Jan 1994 |
| 175.40.0.0/16 | 65.5k | APNIC | IN | 11th Dec 2009 |
| 177.203.80.0/20 | 4.1k | APNIC | IN | 13th Mar 2025 |
| 177.4.96.0/20 | 4.1k | APNIC | IN | 13th Mar 2025 |
| 180.178.0.0/19 | 8.2k | APNIC | IN | 10th Sept 2009 |
| 180.188.226.0/23 | 512 | APNIC | IN | 18th Sept 2009 |
| 180.188.233.0/24 | 256 | APNIC | IN | 18th Sept 2009 |
| 180.188.238.0/23 | 512 | APNIC | IN | 18th Sept 2009 |
| 180.188.244.0/23 | 512 | APNIC | IN | 18th Sept 2009 |
| 180.211.80.0/22 | 1k | APNIC | IN | 1st Oct 2009 |
| 180.92.200.0/21 | 2k | APNIC | IN | 24th Jul 2009 |
| 182.237.128.0/18 | 16.4k | APNIC | IN | 4th May 2010 |
| 183.87.0.0/21 | 2k | APNIC | IN | 13th Nov 2009 |
| 183.87.16.0/20 | 4.1k | APNIC | IN | 13th Nov 2009 |
| 183.87.196.0/22 | 1k | APNIC | IN | 13th Nov 2009 |
| 183.87.8.0/22 | 1k | APNIC | IN | 13th Nov 2009 |