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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,310 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 200.7.64.0/24 | 256 | LACNIC |  EC | 24th Feb 1993 |
| 200.7.65.0/24 | 256 | LACNIC | EC | 24th Feb 1993 |
| 200.7.66.0/24 | 256 | LACNIC | EC | 24th Feb 1993 |
| 200.7.67.0/24 | 256 | LACNIC | EC | 24th Feb 1993 |
| 200.7.68.0/24 | 256 | LACNIC | EC | 25th Feb 1993 |
| 200.7.69.0/24 | 256 | LACNIC | EC | 25th Feb 1993 |
| 200.7.70.0/24 | 256 | LACNIC | EC | 25th Feb 1993 |
| 200.7.71.0/24 | 256 | LACNIC | EC | 25th Feb 1993 |
| 200.7.72.0/24 | 256 | LACNIC | EC | 25th Feb 1993 |
| 200.7.73.0/24 | 256 | LACNIC | EC | 25th Feb 1993 |
| 200.7.76.0/24 | 256 | LACNIC | EC | 25th Feb 1993 |
| 200.7.77.0/24 | 256 | LACNIC | EC | 27th Feb 1993 |
| 200.7.78.0/24 | 256 | LACNIC | EC | 27th Feb 1993 |
| 200.7.79.0/24 | 256 | LACNIC | EC | 27th Feb 1993 |
| 200.7.80.0/24 | 256 | LACNIC | EC | 27th Feb 1993 |
| 200.7.81.0/24 | 256 | LACNIC | EC | 27th Feb 1993 |
| 200.7.83.0/24 | 256 | LACNIC | EC | 27th Feb 1993 |
| 200.73.200.0/21 | 2k | LACNIC | EC | 26th Dec 2007 |
| 200.76.116.0/23 | 512 | LACNIC |  MX | 19th Apr 2006 |
| 200.76.119.0/24 | 256 | LACNIC | MX | 19th Apr 2006 |
| 200.81.128.0/20 | 4.1k | LACNIC |  AR | 19th Oct 2001 |
| 200.81.192.0/20 | 4.1k | LACNIC | AR | 4th Dec 2001 |
| 200.81.96.0/20 | 4.1k | LACNIC | AR | 21st Aug 2002 |
| 200.9.0.0/23 | 512 | LACNIC |  BR | 1st Jun 2015 |
| 200.9.101.0/24 | 256 | LACNIC |  CL | 22nd Jul 1993 |
| 200.9.108.0/22 | 1k | LACNIC | CL | 2nd Aug 1993 |
| 200.9.114.0/24 | 256 | LACNIC | CL | 18th Aug 2015 |
| 200.9.120.0/23 | 512 | LACNIC |  HN | 30th Dec 2015 |
| 200.9.128.0/24 | 256 | LACNIC | CL | 16th Sept 1993 |
| 200.9.141.0/24 | 256 | LACNIC | CL | 8th Oct 1993 |
| 200.9.144.0/24 | 256 | LACNIC | BR | 7th Feb 2022 |
| 200.9.145.0/24 | 256 | LACNIC | CL | 11th Oct 1993 |
| 200.9.146.0/24 | 256 | LACNIC | CL | 11th Oct 1993 |
| 200.9.150.0/24 | 256 | LACNIC | CL | 2nd Nov 1993 |
| 200.9.151.0/24 | 256 | LACNIC | CL | 1st Mar 2000 |
| 200.9.152.0/24 | 256 | LACNIC | CL | 3rd Nov 1993 |
| 200.9.153.0/24 | 256 | LACNIC | CL | 4th Nov 1993 |
| 200.9.165.0/24 | 256 | LACNIC |  BO | 15th Nov 1993 |
| 200.9.166.0/23 | 512 | LACNIC | BO | 15th Nov 1993 |
| 200.9.177.0/24 | 256 | LACNIC | CL | 23rd Nov 1993 |
| 200.9.178.0/23 | 512 | LACNIC | CL | 23rd Nov 1993 |
| 200.9.180.0/24 | 256 | LACNIC | CL | 23rd Nov 1993 |
| 200.9.188.0/22 | 1k | LACNIC |  NI | 29th Nov 1993 |
| 200.9.192.0/24 | 256 | LACNIC | NI | 29th Nov 1993 |
| 200.9.193.0/24 | 256 | LACNIC | CL | 6th Dec 1993 |
| 200.9.194.0/24 | 256 | LACNIC | AR | 7th Dec 1993 |
| 200.9.195.0/24 | 256 | LACNIC | CL | 7th Dec 1993 |
| 200.9.196.0/23 | 512 | LACNIC | CL | 7th Dec 1993 |
| 200.9.198.0/24 | 256 | LACNIC | CL | 7th Dec 1993 |
| 200.9.199.0/24 | 256 | LACNIC | BR | 9th Dec 1993 |