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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 in Mexico
671 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 200.33.55.0/24 | 256 | LACNIC |  MX | 17th Jul 1996 |
| 200.33.56.0/24 | 256 | LACNIC | MX | 11th Jun 2011 |
| 200.33.57.0/24 | 256 | LACNIC | MX | 11th Jun 2011 |
| 200.33.58.0/24 | 256 | LACNIC | MX | 19th Jul 1996 |
| 200.33.59.0/24 | 256 | LACNIC | MX | 23rd Jul 1996 |
| 200.33.62.0/23 | 512 | LACNIC | MX | 8th Aug 1996 |
| 200.33.64.0/24 | 256 | LACNIC | MX | 21st Jul 1996 |
| 200.33.65.0/24 | 256 | LACNIC | MX | 23rd Jul 1996 |
| 200.33.66.0/24 | 256 | LACNIC | MX | 23rd Jul 1996 |
| 200.33.68.0/24 | 256 | LACNIC | MX | 25th Jul 1996 |
| 200.33.69.0/24 | 256 | LACNIC | MX | 25th Jul 1996 |
| 200.33.70.0/23 | 512 | LACNIC | MX | 13th Aug 1996 |
| 200.33.73.0/24 | 256 | LACNIC | MX | 28th Jul 1996 |
| 200.33.75.0/24 | 256 | LACNIC | MX | 5th Aug 1996 |
| 200.33.76.0/24 | 256 | LACNIC | MX | 19th Aug 1996 |
| 200.33.77.0/24 | 256 | LACNIC | MX | 26th Dec 1997 |
| 200.33.78.0/24 | 256 | LACNIC | MX | 26th Dec 1997 |
| 200.34.129.0/24 | 256 | LACNIC | MX | 16th Oct 1996 |
| 200.34.130.0/24 | 256 | LACNIC | MX | 18th Oct 1996 |
| 200.34.131.0/24 | 256 | LACNIC | MX | 30th Oct 1996 |
| 200.34.132.0/24 | 256 | LACNIC | MX | 20th Oct 1996 |
| 200.34.133.0/24 | 256 | LACNIC | MX | 20th Oct 1996 |
| 200.34.135.0/24 | 256 | LACNIC | MX | 25th Oct 1996 |
| 200.34.136.0/23 | 512 | LACNIC | MX | 30th Oct 1996 |
| 200.34.138.0/24 | 256 | LACNIC | MX | 31st Oct 1996 |
| 200.34.139.0/24 | 256 | LACNIC | MX | 31st Oct 1996 |
| 200.34.143.0/24 | 256 | LACNIC | MX | 5th Nov 1996 |
| 200.34.144.0/23 | 512 | LACNIC | MX | 5th Nov 1996 |
| 200.34.146.0/23 | 512 | LACNIC | MX | 5th Nov 1996 |
| 200.34.148.0/24 | 256 | LACNIC | MX | 7th Nov 1996 |
| 200.34.149.0/24 | 256 | LACNIC | MX | 11th Nov 1996 |
| 200.34.150.0/24 | 256 | LACNIC | MX | 11th Nov 1996 |
| 200.34.151.0/24 | 256 | LACNIC | MX | 8th Nov 1996 |
| 200.34.156.0/24 | 256 | LACNIC | MX | 26th Dec 1997 |
| 200.34.157.0/24 | 256 | LACNIC | MX | 9th Sept 1998 |
| 200.34.158.0/24 | 256 | LACNIC | MX | 26th Dec 1997 |
| 200.34.159.0/24 | 256 | LACNIC | MX | 19th Jan 1997 |
| 200.34.172.0/24 | 256 | LACNIC | MX | 11th Jun 2011 |
| 200.34.192.0/24 | 256 | LACNIC | MX | 26th Nov 1996 |
| 200.34.193.0/24 | 256 | LACNIC | MX | 12th Dec 1996 |
| 200.34.195.0/24 | 256 | LACNIC | MX | 2nd Dec 1996 |
| 200.34.196.0/23 | 512 | LACNIC | MX | 28th Nov 1996 |
| 200.34.198.0/24 | 256 | LACNIC | MX | 2nd Dec 1996 |
| 200.34.199.0/24 | 256 | LACNIC | MX | 2nd Dec 1996 |
| 200.34.20.0/23 | 512 | LACNIC | MX | 16th Oct 1996 |
| 200.34.204.0/24 | 256 | LACNIC | MX | 13th Nov 1996 |
| 200.34.207.0/24 | 256 | LACNIC | MX | 17th Nov 1996 |
| 200.34.208.0/23 | 512 | LACNIC | MX | 17th Nov 1996 |
| 200.34.211.0/24 | 256 | LACNIC | MX | 19th Nov 1996 |
| 200.34.212.0/24 | 256 | LACNIC | MX | 20th Nov 1996 |