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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
2,822 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 103.12.220.0/22 | 1k | APNIC |  ID | 18th Jul 2012 |
| 103.12.23.0/24 | 256 | APNIC | ID | 1st Jun 2012 |
| 103.121.186.0/23 | 512 | APNIC | ID | 28th Mar 2023 |
| 103.121.200.0/22 | 1k | APNIC | ID | 29th Aug 2018 |
| 103.121.251.0/24 | 256 | APNIC | ID | 31st Aug 2018 |
| 103.121.50.0/23 | 512 | APNIC | ID | 16th Aug 2018 |
| 103.121.84.0/22 | 1k | APNIC | ID | 20th Aug 2018 |
| 103.122.7.0/24 | 256 | APNIC | ID | 7th Sept 2018 |
| 103.122.76.0/23 | 512 | APNIC | ID | 13th Sept 2018 |
| 103.123.120.0/22 | 1k | APNIC | ID | 27th Sept 2018 |
| 103.123.20.0/22 | 1k | APNIC | ID | 21st Sept 2018 |
| 103.123.80.0/22 | 1k | APNIC | ID | 26th Sept 2018 |
| 103.124.4.0/22 | 1k | APNIC | ID | 26th Oct 2018 |
| 103.124.68.0/22 | 1k | APNIC | ID | 30th Oct 2018 |
| 103.126.120.0/24 | 256 | APNIC | ID | 30th Nov 2018 |
| 103.126.195.0/24 | 256 | APNIC | ID | 28th Dec 2022 |
| 103.126.26.0/24 | 256 | APNIC | ID | 28th Dec 2022 |
| 103.127.129.0/24 | 256 | APNIC | ID | 20th Dec 2018 |
| 103.127.16.0/23 | 512 | APNIC | ID | 11th Dec 2018 |
| 103.13.200.0/22 | 1k | APNIC | ID | 27th Jul 2012 |
| 103.13.232.0/23 | 512 | APNIC | ID | 27th Sept 2022 |
| 103.13.37.0/24 | 256 | APNIC | ID | 12th Jun 2012 |
| 103.13.38.0/24 | 256 | APNIC | ID | 12th Jun 2012 |
| 103.131.236.0/22 | 1k | APNIC | ID | 25th Oct 2018 |
| 103.131.246.0/24 | 256 | APNIC | ID | 25th Oct 2018 |
| 103.131.28.0/24 | 256 | APNIC | ID | 30th Dec 2022 |
| 103.131.94.0/24 | 256 | APNIC | ID | 18th Oct 2018 |
| 103.133.16.0/22 | 1k | APNIC | ID | 18th Jan 2019 |
| 103.133.3.0/24 | 256 | APNIC | ID | 17th Jan 2019 |
| 103.134.104.0/22 | 1k | APNIC | ID | 11th Feb 2019 |
| 103.135.68.0/23 | 512 | APNIC | ID | 21st Feb 2019 |
| 103.136.219.0/24 | 256 | APNIC | ID | 14th Mar 2019 |
| 103.136.81.0/24 | 256 | APNIC | ID | 6th Mar 2019 |
| 103.137.146.0/23 | 512 | APNIC | ID | 28th Mar 2019 |
| 103.137.166.0/23 | 512 | APNIC | ID | 11th Aug 2022 |
| 103.137.254.0/23 | 512 | APNIC | ID | 8th Apr 2019 |
| 103.137.42.0/23 | 512 | APNIC | ID | 21st Mar 2019 |
| 103.138.97.0/24 | 256 | APNIC | ID | 18th Apr 2019 |
| 103.139.120.0/23 | 512 | APNIC | ID | 22nd May 2019 |
| 103.139.76.0/23 | 512 | APNIC | ID | 17th May 2019 |
| 103.14.108.0/24 | 256 | APNIC | ID | 9th Jul 2012 |
| 103.140.108.0/23 | 512 | APNIC | ID | 25th Jun 2019 |
| 103.140.184.0/24 | 256 | APNIC | ID | 8th Jul 2019 |
| 103.140.20.0/23 | 512 | APNIC | ID | 14th Jun 2019 |
| 103.140.66.0/23 | 512 | APNIC | ID | 20th Jun 2019 |
| 103.140.80.0/23 | 512 | APNIC | ID | 21st Jun 2019 |
| 103.140.88.0/23 | 512 | APNIC | ID | 24th Jun 2019 |
| 103.140.96.0/24 | 256 | APNIC | ID | 16th Jan 2023 |
| 103.141.156.0/23 | 512 | APNIC | ID | 26th Jul 2019 |
| 103.141.162.0/23 | 512 | APNIC | ID | 29th Jul 2019 |