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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 202.64.108.0/24 | 256 | APNIC |  HK | 18th Mar 1994 |
| 202.64.109.0/24 | 256 | APNIC |  JP | 18th Mar 1994 |
| 202.64.121.0/24 | 256 | APNIC | JP | 18th Mar 1994 |
| 202.64.123.0/24 | 256 | APNIC | JP | 18th Mar 1994 |
| 202.64.234.0/24 | 256 | APNIC | JP | 18th Mar 1994 |
| 202.64.240.0/24 | 256 | APNIC | JP | 18th Mar 1994 |
| 202.64.25.0/24 | 256 | APNIC | JP | 18th Mar 1994 |
| 202.64.26.0/23 | 512 | APNIC | HK | 18th Mar 1994 |
| 202.64.64.0/23 | 512 | APNIC | JP | 18th Mar 1994 |
| 202.64.87.0/24 | 256 | APNIC | JP | 18th Mar 1994 |
| 202.65.0.0/21 | 2k | APNIC |  CN | 12th Apr 2011 |
| 202.65.100.0/22 | 1k | APNIC | CN | 21st Nov 2015 |
| 202.65.104.0/22 | 1k | APNIC | CN | 21st Nov 2015 |
| 202.65.108.0/22 | 1k | APNIC | CN | 21st Nov 2015 |
| 202.65.12.0/22 | 1k | APNIC |  AU | 10th Feb 2004 |
| 202.65.8.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 202.66.188.0/22 | 1k | APNIC |  IN | 4th Dec 2015 |
| 202.68.0.0/19 | 8.2k | APNIC | HK | 5th Nov 1994 |
| 202.68.112.0/21 | 2k | APNIC | AU | 6th Apr 2011 |
| 202.68.120.0/22 | 1k | ARIN |  US | 8th Sept 2026 |
| 202.68.124.0/22 | 1k | APNIC | AU | 6th Apr 2011 |
| 202.68.128.0/19 | 8.2k | APNIC | IN | 27th Oct 1999 |
| 202.68.32.0/19 | 8.2k | APNIC | HK | 10th Apr 1996 |
| 202.68.96.0/20 | 4.1k | APNIC | AU | 6th Apr 2011 |
| 202.7.0.0/23 | 512 | APNIC |  NZ | 1st Mar 1994 |
| 202.7.2.0/23 | 512 | APNIC | AU | 25th Sept 2003 |
| 202.7.32.0/24 | 256 | APNIC | NZ | 27th Feb 1993 |
| 202.7.33.0/24 | 256 | APNIC | NZ | 27th Feb 1993 |
| 202.7.34.0/24 | 256 | APNIC | NZ | 27th Feb 1993 |
| 202.7.35.0/24 | 256 | APNIC | NZ | 27th Feb 1993 |
| 202.7.36.0/24 | 256 | APNIC | NZ | 27th Feb 1993 |
| 202.7.4.0/22 | 1k | APNIC | NZ | 23rd Feb 1993 |
| 202.7.42.0/24 | 256 | APNIC | NZ | 27th Feb 1993 |
| 202.7.43.0/24 | 256 | APNIC | NZ | 27th Feb 1993 |
| 202.7.45.0/24 | 256 | APNIC | NZ | 27th Feb 1993 |
| 202.7.56.0/23 | 512 | APNIC | AU | 22nd Dec 2015 |
| 202.7.59.0/24 | 256 | APNIC |  TH | 20th Jun 2018 |
| 202.7.60.0/22 | 1k | APNIC | NZ | 8th Aug 1995 |
| 202.70.0.0/19 | 8.2k | APNIC | CN | 26th Apr 2005 |
| 202.70.130.0/24 | 256 | APNIC | NZ | 11th Feb 2010 |
| 202.70.134.0/23 | 512 | APNIC |  ID | 17th Feb 2010 |
| 202.70.138.0/24 | 256 | APNIC | ID | 22nd Feb 2010 |
| 202.70.192.0/20 | 4.1k | APNIC | CN | 12th Apr 2011 |
| 202.70.96.0/20 | 4.1k | APNIC | CN | 12th Apr 2011 |
| 202.71.152.0/22 | 1k | APNIC | IN | 30th Aug 1999 |
| 202.71.32.0/22 | 1k | APNIC | CN | 21st Nov 2015 |
| 202.71.36.0/22 | 1k | APNIC | CN | 21st Nov 2015 |
| 202.71.40.0/22 | 1k | APNIC | CN | 21st Nov 2015 |
| 202.71.44.0/22 | 1k | APNIC | CN | 21st Nov 2015 |
| 202.72.40.0/21 | 2k | APNIC | CN | 12th Apr 2011 |