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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,709 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 102.206.184.0/24 | 256 | AFRINIC |  ZA | 30th Apr 2025 |
| 102.206.186.0/23 | 512 | AFRINIC | ZA | 19th Feb 2025 |
| 102.206.80.0/24 | 256 | AFRINIC |  EG | 19th Jun 2025 |
| 102.206.81.0/24 | 256 | AFRINIC |  KE | 20th May 2025 |
| 102.207.140.0/24 | 256 | AFRINIC |  SN | 15th Nov 2024 |
| 102.207.141.0/24 | 256 | AFRINIC |  RW | 16th Oct 2024 |
| 102.207.146.0/23 | 512 | AFRINIC |  TZ | 2nd Oct 2024 |
| 102.207.156.0/22 | 1k | AFRINIC |  MZ | 30th Sept 2024 |
| 102.207.240.0/22 | 1k | AFRINIC | EG | 19th Sept 2024 |
| 102.207.32.0/22 | 1k | AFRINIC |  MA | 27th Nov 2024 |
| 102.207.48.0/24 | 256 | AFRINIC | RW | 1st Dec 2024 |
| 102.207.88.0/22 | 1k | AFRINIC |  NG | 7th Nov 2024 |
| 102.208.136.0/22 | 1k | AFRINIC |  ET | 12th Jul 2024 |
| 102.208.160.0/22 | 1k | AFRINIC |  GH | 22nd Jun 2024 |
| 102.208.191.0/24 | 256 | AFRINIC | GH | 17th Jul 2024 |
| 102.208.206.0/24 | 256 | AFRINIC | KE | 3rd Jul 2024 |
| 102.208.24.0/22 | 1k | AFRINIC | ZA | 16th Aug 2024 |
| 102.208.243.0/24 | 256 | AFRINIC |  SL | 4th Jun 2024 |
| 102.208.40.0/22 | 1k | AFRINIC | GH | 14th Aug 2024 |
| 102.208.54.0/23 | 512 | AFRINIC |  CM | 6th Aug 2024 |
| 102.208.84.0/22 | 1k | AFRINIC |  UG | 29th Jul 2024 |
| 102.209.100.0/22 | 1k | AFRINIC | KE | 26th Mar 2024 |
| 102.209.104.0/22 | 1k | AFRINIC | GH | 21st Mar 2024 |
| 102.209.154.0/24 | 256 | AFRINIC |  AO | 12th Mar 2024 |
| 102.209.172.0/22 | 1k | AFRINIC |  LY | 22nd Feb 2024 |
| 102.209.188.0/23 | 512 | AFRINIC |  BF | 28th Feb 2024 |
| 102.209.208.0/22 | 1k | AFRINIC | SN | 15th Feb 2024 |
| 102.209.228.0/22 | 1k | AFRINIC | NG | 23rd Aug 2024 |
| 102.209.237.0/24 | 256 | AFRINIC | KE | 29th Mar 2024 |
| 102.209.72.0/22 | 1k | AFRINIC |  CG | 18th Apr 2024 |
| 102.210.108.0/22 | 1k | AFRINIC | UG | 5th Dec 2023 |
| 102.210.116.0/22 | 1k | AFRINIC | CM | 4th Dec 2023 |
| 102.210.156.0/23 | 512 | AFRINIC | ZA | 15th Nov 2023 |
| 102.210.164.0/22 | 1k | AFRINIC |  CD | 13th Nov 2023 |
| 102.210.170.0/24 | 256 | AFRINIC | CD | 13th Nov 2023 |
| 102.210.171.0/24 | 256 | AFRINIC | ZA | 13th Nov 2023 |
| 102.210.184.0/22 | 1k | AFRINIC | EG | 6th Nov 2023 |
| 102.210.192.0/24 | 256 | AFRINIC | NG | 10th Nov 2023 |
| 102.210.204.0/22 | 1k | AFRINIC | ZA | 25th Oct 2023 |
| 102.210.208.0/24 | 256 | AFRINIC |  CI | 30th Oct 2023 |
| 102.210.224.0/22 | 1k | AFRINIC | ZA | 18th Oct 2023 |
| 102.210.232.0/22 | 1k | AFRINIC | ZA | 17th Oct 2023 |
| 102.210.240.0/23 | 512 | AFRINIC | NG | 17th Oct 2023 |
| 102.210.242.0/24 | 256 | AFRINIC |  SO | 17th Oct 2023 |
| 102.210.252.0/24 | 256 | AFRINIC |  BW | 16th Oct 2023 |
| 102.210.88.0/22 | 1k | AFRINIC | KE | 20th Dec 2023 |
| 102.210.92.0/22 | 1k | AFRINIC | MA | 12th Dec 2023 |
| 102.211.100.0/22 | 1k | AFRINIC |  MG | 24th Aug 2023 |
| 102.211.104.0/24 | 256 | AFRINIC |  MU | 28th Aug 2023 |
| 102.211.106.0/24 | 256 | AFRINIC | KE | 24th Aug 2023 |