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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 200.12.164.0/24 | 256 | LACNIC |  MX | 16th Oct 2008 |
| 200.12.165.0/24 | 256 | LACNIC | MX | 7th Sept 1994 |
| 200.13.128.0/22 | 1k | LACNIC | MX | 27th Sept 1994 |
| 200.13.33.0/24 | 256 | LACNIC | MX | 19th Oct 1994 |
| 200.13.35.0/24 | 256 | LACNIC | MX | 15th Nov 1994 |
| 200.13.36.0/24 | 256 | LACNIC | MX | 16th Nov 1994 |
| 200.13.37.0/24 | 256 | LACNIC | MX | 30th Nov 1994 |
| 200.13.64.0/20 | 4.1k | LACNIC | MX | 31st Oct 1994 |
| 200.13.80.0/23 | 512 | LACNIC | MX | 28th Feb 1995 |
| 200.13.82.0/24 | 256 | LACNIC | MX | 28th Feb 1995 |
| 200.189.68.0/22 | 1k | LACNIC | MX | 26th Jun 2024 |
| 200.194.0.0/18 | 16.4k | LACNIC | MX | 12th Jun 2014 |
| 200.23.104.0/24 | 256 | LACNIC | MX | 31st Jan 1996 |
| 200.23.105.0/24 | 256 | LACNIC | MX | 26th Dec 1997 |
| 200.23.106.0/24 | 256 | LACNIC | MX | 31st Jan 1996 |
| 200.23.111.0/24 | 256 | LACNIC | MX | 29th Jun 2000 |
| 200.23.117.0/24 | 256 | LACNIC | MX | 11th Jun 2011 |
| 200.23.12.0/22 | 1k | LACNIC | MX | 1st Feb 1995 |
| 200.23.121.0/24 | 256 | LACNIC | MX | 1st Feb 1996 |
| 200.23.122.0/24 | 256 | LACNIC | MX | 1st Feb 1996 |
| 200.23.123.0/24 | 256 | LACNIC | MX | 23rd Jan 1996 |
| 200.23.124.0/24 | 256 | LACNIC | MX | 16th Jan 1996 |
| 200.23.127.0/24 | 256 | LACNIC | MX | 23rd Jan 1996 |
| 200.23.129.0/24 | 256 | LACNIC | MX | 19th Feb 2003 |
| 200.23.131.0/24 | 256 | LACNIC | MX | 31st Jan 1996 |
| 200.23.133.0/24 | 256 | LACNIC | MX | 18th Dec 1995 |
| 200.23.136.0/24 | 256 | LACNIC | MX | 18th Dec 1995 |
| 200.23.137.0/24 | 256 | LACNIC | MX | 18th Dec 1995 |
| 200.23.138.0/24 | 256 | LACNIC | MX | 26th Dec 1997 |
| 200.23.141.0/24 | 256 | LACNIC | MX | 17th Jan 1996 |
| 200.23.142.0/24 | 256 | LACNIC | MX | 31st Jan 1996 |
| 200.23.151.0/24 | 256 | LACNIC | MX | 26th Dec 1997 |
| 200.23.154.0/23 | 512 | LACNIC | MX | 26th Dec 1997 |
| 200.23.156.0/24 | 256 | LACNIC | MX | 26th Dec 1997 |
| 200.23.16.0/23 | 512 | LACNIC | MX | 26th Dec 1997 |
| 200.23.164.0/24 | 256 | LACNIC | MX | 2nd Oct 1996 |
| 200.23.165.0/24 | 256 | LACNIC | MX | 2nd Oct 1996 |
| 200.23.167.0/24 | 256 | LACNIC | MX | 2nd Oct 1996 |
| 200.23.172.0/24 | 256 | LACNIC | MX | 2nd Oct 1996 |
| 200.23.173.0/24 | 256 | LACNIC | MX | 27th Sept 1996 |
| 200.23.174.0/24 | 256 | LACNIC | MX | 15th Oct 1996 |
| 200.23.175.0/24 | 256 | LACNIC | MX | 29th Oct 1996 |
| 200.23.177.0/24 | 256 | LACNIC | MX | 29th Sept 1996 |
| 200.23.178.0/24 | 256 | LACNIC | MX | 2nd Oct 1996 |
| 200.23.185.0/24 | 256 | LACNIC | MX | 11th Jun 2011 |
| 200.23.190.0/23 | 512 | LACNIC | MX | 7th Oct 1996 |
| 200.23.192.0/22 | 1k | LACNIC | MX | 30th Apr 1996 |
| 200.23.196.0/23 | 512 | LACNIC | MX | 30th Apr 1996 |
| 200.23.198.0/23 | 512 | LACNIC | MX | 6th Feb 1996 |
| 200.23.2.0/24 | 256 | LACNIC | MX | 4th Feb 1995 |