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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
22,575 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 106.50.0.0/16 | 65.5k | APNIC |  CN | 31st Mar 2011 |
| 110.165.32.0/19 | 8.2k | APNIC | CN | 15th Jun 2010 |
| 110.172.26.0/23 | 512 | APNIC |  VN | 11th Aug 2025 |
| 110.172.64.0/19 | 8.2k | APNIC |  KR | 28th Apr 2009 |
| 110.173.64.0/19 | 8.2k | APNIC | CN | 12th Apr 2011 |
| 110.173.96.0/19 | 8.2k | APNIC | CN | 5th May 2009 |
| 110.232.100.0/22 | 1k | APNIC | KR | 19th May 2009 |
| 110.232.104.0/21 | 2k | APNIC | KR | 19th May 2009 |
| 110.232.176.0/22 | 1k | APNIC |  AU | 27th May 2009 |
| 110.232.32.0/19 | 8.2k | APNIC | CN | 14th May 2009 |
| 110.232.73.0/24 | 256 | APNIC |  ID | 18th May 2009 |
| 110.232.74.0/23 | 512 | APNIC | ID | 18th May 2009 |
| 110.232.76.0/23 | 512 | APNIC | ID | 18th May 2009 |
| 110.232.79.0/24 | 256 | APNIC | ID | 18th May 2009 |
| 110.232.88.0/23 | 512 | APNIC | ID | 18th May 2009 |
| 110.235.192.0/20 | 4.1k | APNIC |  IN | 15th May 2009 |
| 110.235.208.0/21 | 2k | APNIC | IN | 15th May 2009 |
| 110.34.39.0/24 | 256 | APNIC |  PK | 27th Feb 2009 |
| 110.34.40.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 110.34.44.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 110.34.48.0/22 | 1k | APNIC |  NZ | 2nd Mar 2009 |
| 110.34.56.0/21 | 2k | APNIC | KR | 3rd Mar 2009 |
| 110.35.88.0/21 | 2k | APNIC |  FJ | 16th Mar 2011 |
| 110.36.128.0/18 | 16.4k | APNIC | PK | 24th Feb 2009 |
| 110.36.232.0/23 | 512 | APNIC | AU | 24th Feb 2009 |
| 110.36.240.0/20 | 4.1k | APNIC | PK | 24th Feb 2009 |
| 110.36.32.0/20 | 4.1k | APNIC | PK | 24th Feb 2009 |
| 110.36.48.0/21 | 2k | APNIC | PK | 24th Feb 2009 |
| 110.36.57.0/24 | 256 | APNIC | AU | 24th Feb 2009 |
| 110.4.108.0/22 | 1k | APNIC | KR | 23rd Feb 2009 |
| 110.4.112.0/20 | 4.1k | APNIC | KR | 23rd Feb 2009 |
| 110.4.64.0/20 | 4.1k | APNIC | KR | 23rd Feb 2009 |
| 110.4.80.0/21 | 2k | APNIC | KR | 23rd Feb 2009 |
| 110.4.92.0/22 | 1k | APNIC | KR | 23rd Feb 2009 |
| 110.4.96.0/21 | 2k | APNIC | KR | 23rd Feb 2009 |
| 110.44.104.0/22 | 1k | APNIC | IN | 19th Sept 2018 |
| 110.44.12.0/22 | 1k | APNIC | CN | 16th Dec 2015 |
| 110.44.144.0/20 | 4.1k | APNIC | CN | 11th Mar 2011 |
| 110.44.184.0/21 | 2k | APNIC | VN | 17th Mar 2009 |
| 110.48.0.0/16 | 65.5k | APNIC | CN | 16th Mar 2009 |
| 110.50.128.0/18 | 16.4k | APNIC |  TW | 23rd Mar 2009 |
| 110.55.0.0/16 | 65.5k | APNIC |  PH | 25th Mar 2009 |
| 110.74.0.0/19 | 8.2k | APNIC |  JP | 27th Mar 2009 |
| 110.74.117.0/24 | 256 | APNIC | JP | 27th Mar 2009 |
| 110.74.118.0/23 | 512 | APNIC | JP | 27th Mar 2009 |
| 110.74.120.0/24 | 256 | APNIC | JP | 27th Mar 2009 |
| 110.74.124.0/23 | 512 | APNIC | JP | 27th Mar 2009 |
| 110.76.132.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 110.76.136.0/22 | 1k | APNIC | AU | 5th Apr 2011 |
| 110.76.140.0/22 | 1k | APNIC | KR | 12th Jan 2011 |