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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 202.155.180.0/22 | 1k | APNIC |  AU | 18th Feb 2019 |
| 202.155.184.0/23 | 512 | APNIC | AU | 18th Feb 2019 |
| 202.155.32.0/19 | 8.2k | APNIC |  ID | 15th Mar 1999 |
| 202.157.144.0/22 | 1k | APNIC |  SG | 15th Mar 2000 |
| 202.157.192.0/19 | 8.2k | APNIC |  CN | 12th Apr 2011 |
| 202.158.242.0/24 | 256 | APNIC | CN | 9th Jun 2016 |
| 202.158.252.0/24 | 256 | APNIC | ID | 19th Sept 2008 |
| 202.159.64.0/19 | 8.2k | APNIC | ID | 12th Feb 1996 |
| 202.160.120.0/22 | 1k | APNIC | SG | 13th Sept 2007 |
| 202.160.136.0/23 | 512 | APNIC | ID | 8th Dec 2015 |
| 202.160.138.0/24 | 256 | APNIC | ID | 8th Dec 2015 |
| 202.160.156.0/22 | 1k | APNIC | CN | 15th Dec 2015 |
| 202.160.192.0/19 | 8.2k | APNIC | SG | 12th Oct 2000 |
| 202.162.188.0/22 | 1k | APNIC |  IN | 18th Sept 2007 |
| 202.162.200.0/23 | 512 | APNIC | ID | 12th Jan 2001 |
| 202.162.203.0/24 | 256 | APNIC | ID | 12th Jan 2001 |
| 202.162.206.0/23 | 512 | APNIC | ID | 12th Jan 2001 |
| 202.162.67.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.162.72.0/23 | 512 | APNIC |  NZ | 29th Sept 2008 |
| 202.162.75.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.163.128.0/19 | 8.2k | APNIC |  KR | 7th Mar 2006 |
| 202.163.32.0/19 | 8.2k | APNIC | SG | 23rd May 2003 |
| 202.164.24.0/24 | 256 | APNIC | IN | 5th Nov 2007 |
| 202.164.96.0/19 | 8.2k | APNIC | CN | 12th Apr 2011 |
| 202.165.176.0/20 | 4.1k | APNIC | CN | 22nd Aug 2006 |
| 202.165.231.0/24 | 256 | APNIC |  PK | 10th Mar 1998 |
| 202.165.235.0/24 | 256 | APNIC | PK | 10th Mar 1998 |
| 202.165.239.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.165.240.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 202.165.242.0/24 | 256 | APNIC | PK | 10th Mar 1998 |
| 202.165.243.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.165.244.0/24 | 256 | APNIC | PK | 10th Mar 1998 |
| 202.165.245.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.165.247.0/24 | 256 | APNIC | PK | 10th Mar 1998 |
| 202.165.251.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.165.252.0/22 | 1k | APNIC | CN | 14th Apr 2011 |
| 202.166.185.0/24 | 256 | APNIC |  JP | 6th Dec 2007 |
| 202.166.188.0/22 | 1k | APNIC |  PH | 18th Dec 2007 |
| 202.166.224.0/19 | 8.2k | APNIC | CN | 12th Apr 2011 |
| 202.167.192.0/20 | 4.1k | APNIC | SG | 9th Apr 2001 |
| 202.168.128.0/22 | 1k | APNIC | CN | 16th Dec 2015 |
| 202.168.132.0/22 | 1k | APNIC | CN | 16th Dec 2015 |
| 202.168.136.0/22 | 1k | APNIC | CN | 16th Dec 2015 |
| 202.168.140.0/22 | 1k | APNIC | CN | 16th Dec 2015 |
| 202.168.80.0/22 | 1k | APNIC | CN | 10th Nov 2015 |
| 202.168.92.0/23 | 512 | APNIC | SG | 27th Dec 2007 |
| 202.170.224.0/19 | 8.2k | APNIC | CN | 12th Apr 2011 |
| 202.171.192.0/20 | 4.1k | APNIC |  MY | 25th Sept 2000 |
| 202.171.216.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 202.171.232.0/24 | 256 | APNIC | CN | 9th Jun 2016 |