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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 Indonesia
2,838 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 117.103.0.0/21 | 2k | APNIC |  ID | 16th Jul 2007 |
| 117.103.114.0/23 | 512 | APNIC | ID | 25th Sept 2017 |
| 117.103.48.0/20 | 4.1k | APNIC | ID | 18th Jul 2007 |
| 118.91.224.0/21 | 2k | APNIC | ID | 28th Aug 2007 |
| 119.15.128.0/21 | 2k | APNIC | ID | 3rd Dec 2007 |
| 119.47.95.0/24 | 256 | APNIC | ID | 17th Jan 2008 |
| 120.160.0.0/11 | 2.1M | APNIC | ID | 14th Apr 2008 |
| 121.50.128.0/20 | 4.1k | APNIC | ID | 15th Jun 2006 |
| 121.52.128.0/21 | 2k | APNIC | ID | 1st Nov 2007 |
| 122.102.120.0/23 | 512 | APNIC | ID | 11th Aug 2025 |
| 122.129.192.0/21 | 2k | APNIC | ID | 21st Dec 2006 |
| 123.108.8.0/21 | 2k | APNIC | ID | 31st Jan 2007 |
| 123.253.244.0/22 | 1k | APNIC | ID | 27th Jun 2019 |
| 123.253.252.0/22 | 1k | APNIC | ID | 27th Jun 2019 |
| 124.66.160.0/21 | 2k | APNIC | ID | 1st Nov 2006 |
| 125.62.92.0/22 | 1k | APNIC | ID | 14th Dec 2017 |
| 138.252.122.0/23 | 512 | APNIC | ID | 31st Oct 2025 |
| 138.252.210.0/24 | 256 | APNIC | ID | 14th Nov 2025 |
| 138.252.217.0/24 | 256 | APNIC | ID | 17th Nov 2025 |
| 138.252.50.0/24 | 256 | APNIC | ID | 16th Oct 2025 |
| 138.252.70.0/24 | 256 | APNIC | ID | 20th Oct 2025 |
| 139.190.96.0/19 | 8.2k | APNIC | ID | 10th Mar 2011 |
| 14.102.46.0/23 | 512 | APNIC | ID | 13th Sept 2010 |
| 144.79.242.0/23 | 512 | APNIC | ID | 30th Dec 2025 |
| 144.79.251.0/24 | 256 | APNIC | ID | 31st Dec 2025 |
| 144.79.50.0/24 | 256 | APNIC | ID | 2nd Dec 2025 |
| 144.79.73.0/24 | 256 | APNIC | ID | 5th Dec 2025 |
| 144.79.88.0/24 | 256 | APNIC | ID | 8th Dec 2025 |
| 150.107.138.0/23 | 512 | APNIC | ID | 20th Jun 2014 |
| 150.107.148.0/22 | 1k | APNIC | ID | 20th Jun 2014 |
| 150.242.178.0/23 | 512 | APNIC | ID | 28th Dec 2023 |
| 151.158.183.0/24 | 256 | APNIC | ID | 16th Feb 2026 |
| 151.158.186.0/24 | 256 | APNIC | ID | 16th Feb 2026 |
| 151.158.202.0/24 | 256 | APNIC | ID | 19th Feb 2026 |
| 151.158.240.0/23 | 512 | APNIC | ID | 27th Feb 2026 |
| 151.158.74.0/23 | 512 | APNIC | ID | 23rd Jan 2026 |
| 151.158.82.0/23 | 512 | APNIC | ID | 26th Jan 2026 |
| 153.76.240.0/22 | 1k | APNIC | ID | 23rd Sept 1991 |
| 157.10.16.0/23 | 512 | APNIC | ID | 30th Dec 2023 |
| 157.10.181.0/24 | 256 | APNIC | ID | 12th Jan 2024 |
| 157.10.205.0/24 | 256 | APNIC | ID | 16th Jan 2024 |
| 157.10.237.0/24 | 256 | APNIC | ID | 19th Jan 2024 |
| 157.15.120.0/24 | 256 | APNIC | ID | 3rd Feb 2024 |
| 157.15.162.0/23 | 512 | APNIC | ID | 7th Feb 2024 |
| 157.15.170.0/23 | 512 | APNIC | ID | 7th Feb 2024 |
| 157.15.184.0/23 | 512 | APNIC | ID | 8th Feb 2024 |
| 157.15.2.0/23 | 512 | APNIC | ID | 22nd Jan 2024 |
| 157.15.206.0/23 | 512 | APNIC | ID | 9th Feb 2024 |
| 157.15.214.0/23 | 512 | APNIC | ID | 9th Feb 2024 |
| 157.15.216.0/23 | 512 | APNIC | ID | 9th Feb 2024 |