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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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.
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Countries with the most unannounced blocks, largest first.
Unannounced blocks in Bangladesh
1,194 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 103.104.143.0/24 | 256 | APNIC |  BD | 27th Nov 2017 |
| 103.106.57.0/24 | 256 | APNIC | BD | 19th Dec 2017 |
| 103.107.122.0/24 | 256 | APNIC | BD | 15th Jan 2018 |
| 103.110.126.0/24 | 256 | APNIC | BD | 5th Mar 2018 |
| 103.110.192.0/23 | 512 | APNIC | BD | 8th Mar 2018 |
| 103.111.90.0/23 | 512 | APNIC | BD | 15th Mar 2018 |
| 103.113.109.0/24 | 256 | APNIC | BD | 12th Apr 2018 |
| 103.117.11.0/24 | 256 | APNIC | BD | 13th Jun 2018 |
| 103.12.166.0/24 | 256 | APNIC | BD | 16th Jul 2012 |
| 103.12.82.0/23 | 512 | APNIC | BD | 21st Jun 2012 |
| 103.120.144.0/22 | 1k | APNIC | BD | 6th Aug 2018 |
| 103.124.232.0/22 | 1k | APNIC | BD | 6th Nov 2018 |
| 103.125.24.0/24 | 256 | APNIC | BD | 11th Nov 2018 |
| 103.125.54.0/23 | 512 | APNIC | BD | 13th Nov 2018 |
| 103.129.153.0/24 | 256 | APNIC | BD | 6th Sept 2018 |
| 103.138.30.0/23 | 512 | APNIC | BD | 11th Apr 2019 |
| 103.139.148.0/22 | 1k | APNIC | BD | 28th May 2019 |
| 103.141.76.0/24 | 256 | APNIC | BD | 8th Sept 2023 |
| 103.142.192.0/23 | 512 | APNIC | BD | 4th Sept 2019 |
| 103.145.102.0/23 | 512 | APNIC | BD | 20th Nov 2019 |
| 103.146.68.0/23 | 512 | APNIC | BD | 9th Dec 2019 |
| 103.151.10.0/23 | 512 | APNIC | BD | 1st May 2020 |
| 103.151.168.0/23 | 512 | APNIC | BD | 24th May 2020 |
| 103.151.196.0/23 | 512 | APNIC | BD | 29th May 2020 |
| 103.152.10.0/23 | 512 | APNIC | BD | 9th Jun 2020 |
| 103.160.158.0/24 | 256 | APNIC | BD | 21st Dec 2020 |
| 103.164.88.0/24 | 256 | APNIC | BD | 17th Mar 2021 |
| 103.170.78.0/23 | 512 | APNIC | BD | 23rd Jul 2021 |
| 103.173.126.0/23 | 512 | APNIC | BD | 21st Sept 2021 |
| 103.173.52.0/23 | 512 | APNIC | BD | 14th Sept 2021 |
| 103.176.248.0/23 | 512 | APNIC | BD | 24th Nov 2021 |
| 103.204.244.0/22 | 1k | APNIC | BD | 23rd Dec 2015 |
| 103.204.30.0/23 | 512 | APNIC | BD | 18th May 2023 |
| 103.21.72.0/22 | 1k | APNIC | BD | 8th Oct 2012 |
| 103.219.147.0/24 | 256 | APNIC | BD | 20th May 2016 |
| 103.244.184.0/22 | 1k | APNIC | BD | 20th Dec 2012 |
| 103.249.0.0/22 | 1k | APNIC | BD | 27th May 2013 |
| 103.31.108.0/24 | 256 | APNIC | BD | 23rd Nov 2012 |
| 103.54.148.0/22 | 1k | APNIC | BD | 8th Apr 2015 |
| 103.57.120.0/22 | 1k | APNIC | BD | 15th May 2015 |
| 103.66.228.0/23 | 512 | APNIC | BD | 11th Jan 2023 |
| 103.9.181.0/24 | 256 | APNIC | BD | 28th May 2012 |
| 112.137.0.0/20 | 4.1k | APNIC | BD | 3rd Feb 2009 |
| 113.192.42.0/23 | 512 | APNIC | BD | 8th Dec 2023 |
| 116.212.186.0/24 | 256 | APNIC | BD | 27th Apr 2007 |
| 122.248.0.0/20 | 4.1k | APNIC | BD | 17th Nov 2006 |
| 123.176.59.0/24 | 256 | APNIC | BD | 19th Nov 2009 |
| 138.252.102.0/23 | 512 | APNIC | BD | 27th Oct 2025 |
| 144.79.2.0/23 | 512 | APNIC | BD | 21st Nov 2025 |
| 144.79.41.0/24 | 256 | APNIC | BD | 28th Nov 2025 |