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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,244 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 196.4.94.0/24 | 256 | AFRINIC |  ZA | 11th Feb 1994 |
| 196.4.96.0/24 | 256 | AFRINIC | ZA | 10th Dec 1992 |
| 196.4.98.0/24 | 256 | AFRINIC | ZA | 28th Jan 1994 |
| 196.4.99.0/24 | 256 | AFRINIC | ZA | 28th Jan 1994 |
| 196.40.128.0/20 | 4.1k | AFRINIC |  CI | 28th Feb 2020 |
| 196.40.160.0/20 | 4.1k | AFRINIC |  NG | 2nd Jul 2013 |
| 196.40.192.0/18 | 16.4k | AFRINIC | NG | 19th Nov 2010 |
| 196.41.67.0/24 | 256 | AFRINIC |  CD | 18th Mar 2016 |
| 196.41.94.0/24 | 256 | AFRINIC | NG | 19th Aug 2016 |
| 196.43.217.0/24 | 256 | AFRINIC | CI | 28th Feb 2020 |
| 196.43.227.0/24 | 256 | AFRINIC | CI | 28th Feb 2020 |
| 196.43.233.0/24 | 256 | AFRINIC | CI | 28th Feb 2020 |
| 196.43.236.0/24 | 256 | AFRINIC |  MA | 17th Apr 2012 |
| 196.43.242.0/24 | 256 | AFRINIC |  GH | 13th Jul 2012 |
| 196.43.244.0/24 | 256 | AFRINIC | NG | 8th Aug 2012 |
| 196.43.245.0/24 | 256 | AFRINIC | CI | 28th Feb 2020 |
| 196.44.192.0/20 | 4.1k | AFRINIC | ZA | 9th Dec 2015 |
| 196.44.208.0/20 | 4.1k | AFRINIC | ZA | 23rd Jan 2006 |
| 196.44.48.0/20 | 4.1k | AFRINIC | CI | 28th Feb 2020 |
| 196.45.0.0/20 | 4.1k | AFRINIC | CI | 28th Feb 2020 |
| 196.45.176.0/21 | 2k | AFRINIC | ZA | 15th Jul 2004 |
| 196.45.240.0/20 | 4.1k | AFRINIC | CI | 28th Feb 2020 |
| 196.45.48.0/20 | 4.1k | AFRINIC | NG | 25th Sept 2008 |
| 196.45.64.0/19 | 8.2k | AFRINIC | CI | 28th Feb 2020 |
| 196.46.116.0/22 | 1k | AFRINIC | CI | 28th Feb 2020 |
| 196.46.25.0/24 | 256 | AFRINIC | ZA | 15th Mar 2010 |
| 196.46.80.0/20 | 4.1k | AFRINIC | GH | 6th Dec 2006 |
| 196.47.96.0/19 | 8.2k | AFRINIC | NG | 2nd Jul 2013 |
| 196.49.1.0/24 | 256 | AFRINIC |  GM | 6th Jan 2014 |
| 196.49.102.0/24 | 256 | AFRINIC | MA | 31st Aug 2023 |
| 196.49.106.0/24 | 256 | AFRINIC |  MW | 23rd Sept 2024 |
| 196.49.11.0/24 | 256 | AFRINIC |  SC | 30th Jan 2015 |
| 196.49.110.0/24 | 256 | AFRINIC |  BJ | 27th Jun 2025 |
| 196.49.112.0/24 | 256 | AFRINIC | GH | 3rd Jul 2025 |
| 196.49.116.0/24 | 256 | AFRINIC |  SS | 4th Dec 2025 |
| 196.49.118.0/24 | 256 | AFRINIC | MW | 9th Dec 2025 |
| 196.49.120.0/24 | 256 | AFRINIC |  KE | 9th Dec 2025 |
| 196.49.121.0/24 | 256 | AFRINIC | KE | 9th Dec 2025 |
| 196.49.126.0/24 | 256 | AFRINIC |  UG | 19th Jun 2026 |
| 196.49.127.0/24 | 256 | AFRINIC | UG | 19th Jun 2026 |
| 196.49.13.0/24 | 256 | AFRINIC |  MG | 19th Mar 2015 |
| 196.49.18.0/24 | 256 | AFRINIC |  MR | 22nd Apr 2016 |
| 196.49.24.0/24 | 256 | AFRINIC |  BW | 17th Jun 2016 |
| 196.49.28.0/24 | 256 | AFRINIC | NG | 27th Jul 2016 |
| 196.49.3.0/24 | 256 | AFRINIC |  BI | 20th Mar 2014 |
| 196.49.34.0/24 | 256 | AFRINIC |  MZ | 30th Sept 2016 |
| 196.49.38.0/24 | 256 | AFRINIC |  CM | 27th Oct 2016 |
| 196.49.4.0/24 | 256 | AFRINIC |  SZ | 3rd Oct 2014 |
| 196.49.40.0/24 | 256 | AFRINIC |  GN | 2nd Dec 2016 |
| 196.49.42.0/24 | 256 | AFRINIC |  SN | 31st Mar 2017 |