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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through APNIC, largest first.
Unannounced blocks registered through APNIC
22,592 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 123.108.0.0/21 | 2k | APNIC |  KR | 31st Jan 2007 |
| 123.108.104.0/22 | 1k | APNIC |  AU | 23rd Dec 2008 |
| 123.108.8.0/21 | 2k | APNIC |  ID | 31st Jan 2007 |
| 123.137.0.0/16 | 65.5k | APNIC |  CN | 28th Feb 2007 |
| 123.176.59.0/24 | 256 | APNIC |  BD | 19th Nov 2009 |
| 123.176.60.0/22 | 1k | APNIC | CN | 6th Jan 2011 |
| 123.176.80.0/20 | 4.1k | APNIC | CN | 20th Mar 2007 |
| 123.199.128.0/17 | 32.8k | APNIC | CN | 16th Jun 2006 |
| 123.236.0.0/14 | 262k | APNIC |  IN | 16th Feb 2007 |
| 123.242.0.0/17 | 32.8k | APNIC | CN | 12th Feb 2007 |
| 123.249.128.0/17 | 32.8k | APNIC | CN | 30th Jan 2007 |
| 123.250.0.0/15 | 131k | APNIC | KR | 29th Jan 2007 |
| 123.253.142.0/24 | 256 | APNIC |  NZ | 14th May 2019 |
| 123.253.143.0/24 | 256 | APNIC | IN | 15th May 2019 |
| 123.253.16.0/22 | 1k | APNIC |  JP | 13th May 2019 |
| 123.253.168.0/22 | 1k | APNIC |  HK | 12th Jun 2019 |
| 123.253.204.0/22 | 1k | APNIC | IN | 13th Jun 2019 |
| 123.253.244.0/22 | 1k | APNIC | ID | 27th Jun 2019 |
| 123.253.252.0/22 | 1k | APNIC | ID | 27th Jun 2019 |
| 123.253.52.0/23 | 512 | APNIC | CN | 29th Sept 2025 |
| 123.253.80.0/22 | 1k | APNIC |  SG | 13th May 2019 |
| 123.255.208.0/21 | 2k | APNIC | AU | 19th Nov 2008 |
| 123.255.216.0/21 | 2k | APNIC | AU | 18th Mar 2009 |
| 123.255.252.0/22 | 1k | APNIC | IN | 9th Dec 2008 |
| 123.255.80.0/21 | 2k | APNIC | HK | 15th Jun 2009 |
| 123.49.64.0/19 | 8.2k | APNIC | SG | 8th Jun 2006 |
| 123.49.96.0/19 | 8.2k | APNIC | SG | 14th Feb 2007 |
| 123.50.160.0/19 | 8.2k | APNIC | CN | 12th Apr 2011 |
| 123.61.0.0/16 | 65.5k | APNIC | CN | 16th Jan 2007 |
| 123.62.0.0/16 | 65.5k | APNIC | CN | 16th Jan 2007 |
| 123.98.0.0/17 | 32.8k | APNIC | CN | 21st Nov 2006 |
| 123.98.128.0/20 | 4.1k | APNIC | AU | 23rd Nov 2006 |
| 123.99.0.0/19 | 8.2k | APNIC |  TW | 28th Sept 2006 |
| 123.99.32.0/19 | 8.2k | APNIC | TW | 25th Jan 2007 |
| 124.108.0.0/22 | 1k | APNIC | AU | 31st Dec 2010 |
| 124.108.112.0/20 | 4.1k | APNIC | SG | 20th Jun 2007 |
| 124.108.40.0/21 | 2k | APNIC | CN | 23rd Jun 2006 |
| 124.108.8.0/21 | 2k | APNIC | CN | 6th Mar 2006 |
| 124.108.96.0/20 | 4.1k | APNIC | HK | 15th Feb 2006 |
| 124.109.96.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 124.14.24.0/21 | 2k | APNIC | CN | 10th Jan 2007 |
| 124.14.32.0/20 | 4.1k | APNIC | CN | 10th Jan 2007 |
| 124.14.48.0/22 | 1k | APNIC | CN | 10th Jan 2007 |
| 124.14.56.0/21 | 2k | APNIC | CN | 10th Jan 2007 |
| 124.147.128.0/17 | 32.8k | APNIC | CN | 6th Mar 2006 |
| 124.147.32.0/19 | 8.2k | APNIC | JP | 15th Mar 2006 |
| 124.15.0.0/16 | 65.5k | APNIC | CN | 10th Jan 2007 |
| 124.150.136.0/24 | 256 | APNIC | IN | 23rd Feb 2018 |
| 124.150.137.0/24 | 256 | APNIC | CN | 9th Jun 2016 |
| 124.150.138.0/24 | 256 | APNIC | AU | 7th Mar 2016 |