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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,493 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 202.59.236.0/24 | 256 | APNIC |  CN | 14th Apr 2011 |
| 202.59.240.0/24 | 256 | APNIC | CN | 9th Jun 2016 |
| 202.59.255.0/24 | 256 | APNIC |  ID | 1st Oct 2010 |
| 202.6.103.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.6.106.0/24 | 256 | APNIC |  AU | 4th Mar 1993 |
| 202.6.108.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.6.109.0/24 | 256 | APNIC | AU | 3rd Dec 1993 |
| 202.6.110.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 202.6.114.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.6.118.0/24 | 256 | APNIC |  NZ | 7th Mar 2016 |
| 202.6.16.0/20 | 4.1k | APNIC |  TH | 7th Apr 2011 |
| 202.6.176.0/20 | 4.1k | APNIC | CN | 12th Apr 2011 |
| 202.6.32.0/19 | 8.2k | APNIC | AU | 22nd Feb 1993 |
| 202.6.6.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 202.6.66.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 202.6.72.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 202.6.87.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.6.88.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 202.6.92.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 202.60.136.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 202.60.144.0/20 | 4.1k | APNIC | CN | 12th Apr 2011 |
| 202.60.16.0/20 | 4.1k | APNIC |  JP | 21st Jun 2004 |
| 202.60.208.0/20 | 4.1k | APNIC |  IN | 15th Sept 2003 |
| 202.60.240.0/21 | 2k | APNIC |  HK | 5th Apr 2000 |
| 202.60.248.0/22 | 1k | APNIC | HK | 5th Apr 2000 |
| 202.60.252.0/22 | 1k | APNIC | HK | 19th Dec 1996 |
| 202.60.48.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 202.60.96.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 202.61.109.0/24 | 256 | APNIC | AU | 15th Oct 2010 |
| 202.61.123.0/24 | 256 | APNIC | CN | 9th Jun 2016 |
| 202.61.127.0/24 | 256 | APNIC | CN | 9th Jun 2016 |
| 202.61.68.0/22 | 1k | APNIC | CN | 2nd Dec 2015 |
| 202.61.76.0/22 | 1k | APNIC | CN | 2nd Dec 2015 |
| 202.61.96.0/24 | 256 | APNIC | ID | 6th Oct 2010 |
| 202.62.16.0/20 | 4.1k | APNIC | ID | 14th Jul 2004 |
| 202.62.244.0/24 | 256 | APNIC | IN | 20th Jul 2009 |
| 202.62.248.0/22 | 1k | APNIC | CN | 14th Apr 2011 |
| 202.62.252.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.62.255.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.62.6.0/23 | 512 | APNIC |  FJ | 4th Jun 1994 |
| 202.63.248.0/22 | 1k | APNIC | CN | 16th Jun 2005 |
| 202.63.252.0/24 | 256 | APNIC | IN | 9th Jun 2005 |
| 202.63.253.0/24 | 256 | APNIC | CN | 9th Jun 2016 |
| 202.63.80.0/24 | 256 | APNIC | CN | 9th Jun 2016 |
| 202.63.81.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.63.82.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 202.63.84.0/22 | 1k | APNIC | CN | 14th Apr 2011 |
| 202.63.88.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 202.64.100.0/24 | 256 | APNIC | JP | 18th Mar 1994 |
| 202.64.102.0/23 | 512 | APNIC | JP | 18th Mar 1994 |