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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through LACNIC, largest first.
Unannounced blocks registered through LACNIC
4,568 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 192.188.197.0/24 | 256 | LACNIC |  EC | 24th Jul 1992 |
| 192.188.44.0/24 | 256 | LACNIC | EC | 19th Jun 1992 |
| 192.188.54.0/24 | 256 | LACNIC | EC | 19th Jun 1992 |
| 192.188.56.0/24 | 256 | LACNIC | EC | 19th Jun 1992 |
| 192.188.60.0/24 | 256 | LACNIC | EC | 22nd Jun 1992 |
| 192.203.158.0/24 | 256 | LACNIC |  CL | 17th Sept 1992 |
| 192.207.183.0/24 | 256 | LACNIC |  GT | 10th Sept 1992 |
| 192.207.40.0/24 | 256 | LACNIC | EC | 18th Aug 1992 |
| 192.207.41.0/24 | 256 | LACNIC | EC | 18th Aug 1992 |
| 192.207.42.0/24 | 256 | LACNIC | EC | 18th Aug 1992 |
| 192.207.65.0/24 | 256 | LACNIC | EC | 20th Aug 1992 |
| 192.207.68.0/24 | 256 | LACNIC | EC | 20th Aug 1992 |
| 192.234.102.0/24 | 256 | LACNIC |  MX | 29th Sept 2022 |
| 192.251.39.0/24 | 256 | LACNIC | CL | 20th Nov 1992 |
| 192.65.152.0/24 | 256 | LACNIC |  VE | 20th Nov 1989 |
| 192.80.209.0/24 | 256 | LACNIC |  BR | 23rd May 1990 |
| 196.1.112.0/24 | 256 | LACNIC |  CU | 26th Jul 1994 |
| 196.1.135.0/24 | 256 | LACNIC | CU | 19th Jul 1994 |
| 196.3.106.0/24 | 256 | LACNIC |  DO | 30th May 1995 |
| 196.3.152.0/24 | 256 | LACNIC | CU | 29th Aug 1995 |
| 196.3.16.0/20 | 4.1k | LACNIC |  CW | 8th Sept 1994 |
| 198.151.132.0/24 | 256 | LACNIC | MX | 17th Jun 1993 |
| 198.2.16.0/20 | 4.1k | LACNIC | CL | 3rd Dec 1992 |
| 198.49.164.0/24 | 256 | LACNIC |  CR | 19th Feb 1993 |
| 198.51.71.0/24 | 256 | LACNIC |  CO | 29th Jan 1993 |
| 198.58.12.0/24 | 256 | LACNIC | BR | 2nd Mar 2015 |
| 199.103.102.0/24 | 256 | LACNIC | CL | 25th Jun 1994 |
| 199.248.144.0/24 | 256 | LACNIC |  AR | 14th Sept 1994 |
| 199.26.234.0/24 | 256 | LACNIC |  PA | 6th Jan 1994 |
| 2.152.224.0/20 | 4.1k | LACNIC | CO | 3rd Nov 2026 |
| 2.152.240.0/22 | 1k | LACNIC | CO | 3rd Nov 2026 |
| 2.152.244.0/23 | 512 | LACNIC | CO | 3rd Nov 2026 |
| 2.152.250.0/24 | 256 | LACNIC | EC | 27th Oct 2026 |
| 2.152.251.0/24 | 256 | LACNIC | VE | 24th Aug 2026 |
| 2.152.252.0/22 | 1k | LACNIC | PA | 26th Aug 2026 |
| 2.152.32.0/24 | 256 | LACNIC | DO | 24th Aug 2026 |
| 2.152.34.0/23 | 512 | LACNIC | VE | 6th Oct 2026 |
| 2.152.46.0/24 | 256 | LACNIC |  PE | 27th Oct 2026 |
| 2.152.6.0/23 | 512 | LACNIC | DO | 24th Aug 2026 |
| 2.152.60.0/22 | 1k | LACNIC | DO | 24th Aug 2026 |
| 200.0.0.0/21 | 2k | LACNIC | CO | 11th May 1993 |
| 200.0.103.0/24 | 256 | LACNIC | MX | 26th Jul 1994 |
| 200.0.104.0/23 | 512 | LACNIC | MX | 26th Jul 1994 |
| 200.0.106.0/24 | 256 | LACNIC | MX | 26th Jul 1994 |
| 200.0.107.0/24 | 256 | LACNIC | PE | 13th Oct 1994 |
| 200.0.108.0/24 | 256 | LACNIC | CL | 13th Oct 1994 |
| 200.0.109.0/24 | 256 | LACNIC | MX | 21st Oct 1994 |
| 200.0.110.0/24 | 256 | LACNIC | PE | 8th Nov 1994 |
| 200.0.115.0/24 | 256 | LACNIC | CL | 23rd Nov 1994 |
| 200.0.120.0/24 | 256 | LACNIC | CL | 29th Dec 1994 |