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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,738 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 102.216.118.0/24 | 256 | AFRINIC |  MA | 26th Apr 2022 |
| 102.216.131.0/24 | 256 | AFRINIC |  ZA | 11th Aug 2022 |
| 102.216.132.0/24 | 256 | AFRINIC |  CV | 31st Mar 2022 |
| 102.216.184.0/22 | 1k | AFRINIC | ZA | 10th Mar 2022 |
| 102.216.214.0/23 | 512 | AFRINIC |  ZM | 17th Mar 2022 |
| 102.216.248.0/22 | 1k | AFRINIC |  GM | 20th Jan 2022 |
| 102.216.4.0/22 | 1k | AFRINIC | ZA | 7th Apr 2022 |
| 102.216.96.0/22 | 1k | AFRINIC |  NG | 23rd Mar 2022 |
| 102.217.174.0/23 | 512 | AFRINIC | ZA | 2nd Dec 2021 |
| 102.217.180.0/22 | 1k | AFRINIC | NG | 5th Nov 2021 |
| 102.217.220.0/22 | 1k | AFRINIC | ZA | 11th Nov 2021 |
| 102.217.254.0/24 | 256 | AFRINIC |  EG | 3rd Nov 2021 |
| 102.218.112.0/22 | 1k | AFRINIC |  TD | 13th Oct 2021 |
| 102.218.188.0/22 | 1k | AFRINIC |  DZ | 26th Aug 2021 |
| 102.218.252.0/22 | 1k | AFRINIC |  CM | 16th Sept 2021 |
| 102.218.99.0/24 | 256 | AFRINIC |  SD | 15th Sept 2021 |
| 102.219.0.0/22 | 1k | AFRINIC |  BF | 26th Oct 2021 |
| 102.219.104.0/22 | 1k | AFRINIC |  GH | 21st Jul 2021 |
| 102.219.139.0/24 | 256 | AFRINIC |  KE | 21st Jul 2021 |
| 102.219.32.0/22 | 1k | AFRINIC | GH | 15th Jul 2021 |
| 102.219.68.0/22 | 1k | AFRINIC | CM | 25th Aug 2021 |
| 102.219.80.0/24 | 256 | AFRINIC |  AO | 14th Jul 2021 |
| 102.22.100.0/22 | 1k | AFRINIC |  CI | 28th Feb 2020 |
| 102.220.101.0/24 | 256 | AFRINIC | TD | 10th Aug 2021 |
| 102.220.108.0/22 | 1k | AFRINIC | GH | 9th Apr 2021 |
| 102.220.112.0/22 | 1k | AFRINIC | ZA | 22nd Mar 2021 |
| 102.220.21.0/24 | 256 | AFRINIC |  UG | 5th Aug 2021 |
| 102.220.222.0/24 | 256 | AFRINIC | CM | 23rd Jun 2021 |
| 102.220.224.0/22 | 1k | AFRINIC | ZA | 25th Feb 2021 |
| 102.220.236.0/22 | 1k | AFRINIC | KE | 25th Feb 2021 |
| 102.220.251.0/24 | 256 | AFRINIC | KE | 18th Apr 2021 |
| 102.220.48.0/22 | 1k | AFRINIC | ZA | 27th Apr 2021 |
| 102.221.160.0/22 | 1k | AFRINIC | NG | 23rd Nov 2020 |
| 102.221.164.0/22 | 1k | AFRINIC | NG | 16th Dec 2020 |
| 102.221.4.0/22 | 1k | AFRINIC | ZA | 22nd Dec 2020 |
| 102.221.50.0/23 | 512 | AFRINIC | ZA | 21st Apr 2021 |
| 102.222.180.0/22 | 1k | AFRINIC | ZA | 10th Jun 2020 |
| 102.222.80.0/23 | 512 | AFRINIC | ZA | 12th Aug 2020 |
| 102.222.92.0/22 | 1k | AFRINIC | AO | 7th Sept 2020 |
| 102.223.116.0/22 | 1k | AFRINIC |  SC | 20th Mar 2020 |
| 102.223.180.0/23 | 512 | AFRINIC | NG | 28th Feb 2022 |
| 102.223.204.0/23 | 512 | AFRINIC | KE | 20th Apr 2020 |
| 102.223.255.0/24 | 256 | AFRINIC | NG | 11th Mar 2020 |
| 102.223.48.0/22 | 1k | AFRINIC | TD | 22nd Jun 2020 |
| 102.23.112.0/22 | 1k | AFRINIC | GH | 7th May 2020 |
| 102.36.180.0/24 | 256 | AFRINIC |  CD | 14th Oct 2019 |
| 102.36.196.0/22 | 1k | AFRINIC | ZA | 5th Aug 2019 |
| 102.36.252.0/22 | 1k | AFRINIC | ZA | 1st Aug 2019 |
| 102.38.160.0/19 | 8.2k | AFRINIC | GH | 2nd Sept 2019 |
| 102.64.59.0/24 | 256 | AFRINIC |  SS | 10th Oct 2019 |