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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
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Countries with the most unannounced blocks, largest first.
Unannounced blocks in Indonesia
2,882 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 118.91.224.0/21 | 2k | APNIC |  ID | 28th Aug 2007 |
| 119.15.128.0/21 | 2k | APNIC | ID | 3rd Dec 2007 |
| 119.160.210.0/24 | 256 | APNIC | ID | 19th Oct 2026 |
| 119.160.211.0/24 | 256 | APNIC | ID | 19th Oct 2026 |
| 119.160.223.0/24 | 256 | APNIC | ID | 19th Oct 2026 |
| 119.47.95.0/24 | 256 | APNIC | ID | 17th Jan 2008 |
| 120.176.0.0/12 | 1M | APNIC | ID | 14th Apr 2008 |
| 121.50.128.0/20 | 4.1k | APNIC | ID | 15th Jun 2006 |
| 121.50.168.0/23 | 512 | APNIC | ID | 2nd Oct 2026 |
| 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 |
| 14.102.46.0/23 | 512 | APNIC | ID | 13th Sept 2010 |
| 141.229.24.0/23 | 512 | APNIC | ID | 12th Nov 2026 |
| 141.229.4.0/23 | 512 | APNIC | ID | 9th Nov 2026 |
| 141.229.8.0/23 | 512 | APNIC | ID | 10th Nov 2026 |
| 144.79.242.0/23 | 512 | APNIC | ID | 30th Dec 2025 |
| 144.79.50.0/24 | 256 | APNIC | ID | 2nd Dec 2025 |
| 144.79.72.0/24 | 256 | APNIC | ID | 4th 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 |
| 150.242.178.0/23 | 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 |
| 151.158.42.0/23 | 512 | APNIC | ID | 18th Jan 2026 |
| 151.158.74.0/23 | 512 | APNIC | ID | 23rd Jan 2026 |
| 151.158.82.0/23 | 512 | APNIC | ID | 26th Jan 2026 |
| 151.158.92.0/23 | 512 | APNIC | ID | 27th Jan 2026 |
| 153.79.160.0/21 | 2k | APNIC | ID | 23rd Sept 1991 |
| 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 |
| 157.15.198.0/23 | 512 | APNIC | ID | 9th 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 |
| 157.15.68.0/24 | 256 | APNIC | ID | 29th Jan 2024 |