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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,709 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 102.203.113.0/24 | 256 | AFRINIC |  TZ | 5th Feb 2026 |
| 102.203.124.0/24 | 256 | AFRINIC |  NA | 15th Jan 2026 |
| 102.203.125.0/24 | 256 | AFRINIC |  ZA | 3rd Feb 2026 |
| 102.203.136.0/24 | 256 | AFRINIC |  MA | 7th Jan 2026 |
| 102.203.139.0/24 | 256 | AFRINIC |  AO | 14th Jan 2026 |
| 102.203.148.0/22 | 1k | AFRINIC | ZA | 6th Jan 2026 |
| 102.203.156.0/22 | 1k | AFRINIC |  LY | 29th Dec 2025 |
| 102.203.160.0/22 | 1k | AFRINIC |  GH | 17th Dec 2025 |
| 102.203.164.0/22 | 1k | AFRINIC | AO | 17th Dec 2025 |
| 102.203.188.0/22 | 1k | AFRINIC |  NG | 12th Dec 2025 |
| 102.203.193.0/24 | 256 | AFRINIC |  UG | 30th Dec 2025 |
| 102.203.194.0/23 | 512 | AFRINIC |  LS | 10th Dec 2025 |
| 102.203.212.0/23 | 512 | AFRINIC | ZA | 9th Dec 2025 |
| 102.203.216.0/22 | 1k | AFRINIC |  KE | 1st Dec 2025 |
| 102.203.86.0/23 | 512 | AFRINIC |  SN | 13th Feb 2026 |
| 102.203.88.0/22 | 1k | AFRINIC |  ZW | 3rd Feb 2026 |
| 102.204.116.0/22 | 1k | AFRINIC | LY | 9th Oct 2025 |
| 102.204.121.0/24 | 256 | AFRINIC |  EG | 21st Oct 2025 |
| 102.204.122.0/24 | 256 | AFRINIC | TZ | 9th Oct 2025 |
| 102.204.168.0/22 | 1k | AFRINIC | KE | 6th Oct 2025 |
| 102.204.192.0/22 | 1k | AFRINIC | AO | 17th Sept 2025 |
| 102.204.20.0/22 | 1k | AFRINIC | ZA | 30th Oct 2025 |
| 102.204.255.0/24 | 256 | AFRINIC | KE | 3rd Sept 2025 |
| 102.204.28.0/22 | 1k | AFRINIC | SN | 29th Oct 2025 |
| 102.204.46.0/24 | 256 | AFRINIC | NG | 31st Oct 2025 |
| 102.204.64.0/24 | 256 | AFRINIC | GH | 27th Oct 2025 |
| 102.204.66.0/23 | 512 | AFRINIC |  ZM | 21st Oct 2025 |
| 102.204.68.0/22 | 1k | AFRINIC | ZA | 16th Oct 2025 |
| 102.205.104.0/23 | 512 | AFRINIC |  DJ | 22nd Jul 2025 |
| 102.205.108.0/22 | 1k | AFRINIC | NG | 10th Jul 2025 |
| 102.205.112.0/22 | 1k | AFRINIC |  SL | 10th Jul 2025 |
| 102.205.130.0/24 | 256 | AFRINIC | ZA | 8th Jul 2025 |
| 102.205.136.0/22 | 1k | AFRINIC | NG | 4th Jul 2025 |
| 102.205.140.0/22 | 1k | AFRINIC | ZA | 3rd Jul 2025 |
| 102.205.156.0/22 | 1k | AFRINIC | NG | 27th Jun 2025 |
| 102.205.172.0/22 | 1k | AFRINIC | ZA | 27th Jun 2025 |
| 102.205.176.0/22 | 1k | AFRINIC |  MR | 27th Jun 2025 |
| 102.205.180.0/22 | 1k | AFRINIC | ZA | 27th Jun 2025 |
| 102.205.184.0/22 | 1k | AFRINIC | NG | 27th Jun 2025 |
| 102.205.196.0/22 | 1k | AFRINIC | ZA | 27th Jun 2025 |
| 102.205.20.0/22 | 1k | AFRINIC | ZA | 13th Aug 2025 |
| 102.205.200.0/22 | 1k | AFRINIC | TZ | 27th Jun 2025 |
| 102.205.232.0/24 | 256 | AFRINIC | ZA | 27th Jun 2025 |
| 102.205.35.0/24 | 256 | AFRINIC |  MU | 13th Aug 2025 |
| 102.205.56.0/22 | 1k | AFRINIC | GH | 29th Jul 2025 |
| 102.205.68.0/22 | 1k | AFRINIC | ZA | 24th Jul 2025 |
| 102.205.8.0/23 | 512 | AFRINIC |  BW | 18th Aug 2025 |
| 102.206.144.0/22 | 1k | AFRINIC | ZA | 13th Nov 2025 |
| 102.206.152.0/22 | 1k | AFRINIC |  MW | 14th Nov 2025 |
| 102.206.180.0/22 | 1k | AFRINIC |  SO | 19th Feb 2025 |