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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
2,882 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 103.251.40.0/23 | 512 | APNIC |  ID | 26th Jul 2013 |
| 103.252.85.0/24 | 256 | APNIC | ID | 25th Oct 2013 |
| 103.253.231.0/24 | 256 | APNIC | ID | 15th Aug 2023 |
| 103.254.197.0/24 | 256 | APNIC | ID | 12th May 2023 |
| 103.254.25.0/24 | 256 | APNIC | ID | 27th Nov 2013 |
| 103.254.48.0/23 | 512 | APNIC | ID | 28th Nov 2013 |
| 103.255.120.0/22 | 1k | APNIC | ID | 27th Dec 2013 |
| 103.255.14.0/24 | 256 | APNIC | ID | 18th Dec 2013 |
| 103.255.166.0/23 | 512 | APNIC | ID | 27th Oct 2023 |
| 103.255.29.0/24 | 256 | APNIC | ID | 20th Dec 2013 |
| 103.255.98.0/23 | 512 | APNIC | ID | 21st Aug 2023 |
| 103.26.101.0/24 | 256 | APNIC | ID | 19th Jun 2013 |
| 103.26.118.0/23 | 512 | APNIC | ID | 25th Oct 2022 |
| 103.27.248.0/22 | 1k | APNIC | ID | 10th Jul 2013 |
| 103.27.3.0/24 | 256 | APNIC | ID | 27th Jun 2013 |
| 103.28.104.0/24 | 256 | APNIC | ID | 23rd Dec 2011 |
| 103.28.74.0/23 | 512 | APNIC | ID | 22nd Dec 2011 |
| 103.29.186.0/24 | 256 | APNIC | ID | 12th Aug 2011 |
| 103.29.228.0/22 | 1k | APNIC | ID | 18th Aug 2011 |
| 103.3.56.0/23 | 512 | APNIC | ID | 28th Apr 2011 |
| 103.30.56.0/22 | 1k | APNIC | ID | 26th Oct 2012 |
| 103.31.207.0/24 | 256 | APNIC | ID | 10th Dec 2012 |
| 103.31.32.0/23 | 512 | APNIC | ID | 21st Nov 2012 |
| 103.31.36.0/23 | 512 | APNIC | ID | 21st Nov 2012 |
| 103.35.154.0/23 | 512 | APNIC | ID | 7th Nov 2022 |
| 103.35.219.0/24 | 256 | APNIC | ID | 25th Aug 2022 |
| 103.35.236.0/22 | 1k | APNIC | ID | 25th Aug 2015 |
| 103.36.52.0/23 | 512 | APNIC | ID | 9th Nov 2022 |
| 103.37.230.0/23 | 512 | APNIC | ID | 29th Aug 2014 |
| 103.38.216.0/23 | 512 | APNIC | ID | 28th Aug 2023 |
| 103.39.52.0/24 | 256 | APNIC | ID | 18th Sept 2014 |
| 103.40.0.0/23 | 512 | APNIC | ID | 17th Nov 2022 |
| 103.40.108.0/24 | 256 | APNIC | ID | 2nd Oct 2014 |
| 103.40.68.0/23 | 512 | APNIC | ID | 29th Sept 2014 |
| 103.40.95.0/24 | 256 | APNIC | ID | 1st Oct 2014 |
| 103.43.24.0/23 | 512 | APNIC | ID | 28th Nov 2022 |
| 103.43.26.0/23 | 512 | APNIC | ID | 28th Nov 2022 |
| 103.43.66.0/23 | 512 | APNIC | ID | 20th Nov 2014 |
| 103.46.198.0/24 | 256 | APNIC | ID | 17th Apr 2023 |
| 103.48.13.0/24 | 256 | APNIC | ID | 14th Jan 2015 |
| 103.49.104.0/23 | 512 | APNIC | ID | 3rd Feb 2015 |
| 103.49.184.0/22 | 1k | APNIC | ID | 5th Feb 2015 |
| 103.49.192.0/22 | 1k | APNIC | ID | 5th Feb 2015 |
| 103.5.215.0/24 | 256 | APNIC | ID | 5th Oct 2011 |
| 103.5.48.0/23 | 512 | APNIC | ID | 12th Sept 2011 |
| 103.51.131.0/24 | 256 | APNIC | ID | 25th Feb 2015 |
| 103.52.120.0/22 | 1k | APNIC | ID | 9th Mar 2015 |
| 103.52.133.0/24 | 256 | APNIC | ID | 15th Sept 2022 |
| 103.52.7.0/24 | 256 | APNIC | ID | 5th Mar 2015 |
| 103.54.2.0/23 | 512 | APNIC | ID | 31st Mar 2015 |