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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
Browse by country
Countries with unannounced space registered through APNIC, largest first.
Unannounced blocks in Mongolia
45 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 103.29.199.0/24 | 256 | APNIC |  MN | 19th Aug 2011 |
| 103.48.184.0/22 | 1k | APNIC | MN | 23rd Jan 2015 |
| 103.8.60.0/24 | 256 | APNIC | MN | 13th Apr 2012 |
| 139.5.216.0/22 | 1k | APNIC | MN | 30th Mar 2016 |
| 14.1.124.0/22 | 1k | APNIC | MN | 12th Jan 2016 |
| 161.248.104.0/24 | 256 | APNIC | MN | 6th Jan 2025 |
| 163.128.4.0/23 | 512 | APNIC | MN | 3rd Mar 2026 |
| 192.82.100.0/24 | 256 | APNIC | MN | 30th May 1990 |
| 2001:df0:1180::/48 | 65.5k × /64 | APNIC | MN | 15th Mar 2019 |
| 2001:df1:1a80::/48 | 65.5k × /64 | APNIC | MN | 7th Aug 2019 |
| 2001:df1:1e80::/48 | 65.5k × /64 | APNIC | MN | 12th Aug 2019 |
| 2001:df1:6d80::/48 | 65.5k × /64 | APNIC | MN | 15th Sept 2019 |
| 2001:df1:efc0::/48 | 65.5k × /64 | APNIC | MN | 8th Feb 2023 |
| 2001:df2:3180::/48 | 65.5k × /64 | APNIC | MN | 2nd Dec 2019 |
| 2001:df2:5d00::/48 | 65.5k × /64 | APNIC | MN | 24th Aug 2017 |
| 2001:df2:7f40::/48 | 65.5k × /64 | APNIC | MN | 25th May 2023 |
| 2001:df2:87c0::/48 | 65.5k × /64 | APNIC | MN | 1st Jun 2023 |
| 2001:df3:2f40::/48 | 65.5k × /64 | APNIC | MN | 24th Nov 2023 |
| 2001:df3:a340::/48 | 65.5k × /64 | APNIC | MN | 4th Apr 2024 |
| 2001:df3:acc0::/48 | 65.5k × /64 | APNIC | MN | 11th Apr 2024 |
| 2001:df4:4340::/48 | 65.5k × /64 | APNIC | MN | 12th Sept 2024 |
| 2001:df4:4c80::/48 | 65.5k × /64 | APNIC | MN | 21st Jul 2020 |
| 2001:df5:300::/48 | 65.5k × /64 | APNIC | MN | 2nd May 2018 |
| 2001:df5:e100::/48 | 65.5k × /64 | APNIC | MN | 19th Jul 2018 |
| 2001:df6:32c0::/48 | 65.5k × /64 | APNIC | MN | 9th Oct 2025 |
| 2001:df6:4fc0::/48 | 65.5k × /64 | APNIC | MN | 13th Nov 2025 |
| 2001:df6:5340::/48 | 65.5k × /64 | APNIC | MN | 17th Nov 2025 |
| 2001:df6:5a80::/48 | 65.5k × /64 | APNIC | MN | 29th Mar 2021 |
| 2001:df6:c980::/48 | 65.5k × /64 | APNIC | MN | 10th Jun 2021 |
| 2001:df7:9c0::/48 | 65.5k × /64 | APNIC | MN | 14th May 2026 |
| 2400:7480::/32 | 4.3B × /64 | APNIC | MN | 11th Dec 2013 |
| 2400:ee60::/32 | 4.3B × /64 | APNIC | MN | 21st Mar 2023 |
| 2400:ef60::/32 | 4.3B × /64 | APNIC | MN | 23rd Mar 2023 |
| 2401:7120::/32 | 4.3B × /64 | APNIC | MN | 2nd Jan 2024 |
| 2401:8b60::/32 | 4.3B × /64 | APNIC | MN | 20th Mar 2024 |
| 2401:90c0::/32 | 4.3B × /64 | APNIC | MN | 27th Jul 2017 |
| 2401:a960::/32 | 4.3B × /64 | APNIC | MN | 21st Jun 2024 |
| 2402:2720::/32 | 4.3B × /64 | APNIC | MN | 2nd Sept 2025 |
| 2402:5020::/32 | 4.3B × /64 | APNIC | MN | 3rd Mar 2026 |
| 2402:c900::/32 | 4.3B × /64 | APNIC | MN | 30th Dec 2011 |
| 2403:d700::/32 | 4.3B × /64 | APNIC | MN | 10th May 2012 |
| 2404:2700::/32 | 4.3B × /64 | APNIC | MN | 13th Jun 2012 |
| 2406:2940::/32 | 4.3B × /64 | APNIC | MN | 15th Jun 2020 |
| 2407:1c80::/32 | 4.3B × /64 | APNIC | MN | 2nd Sept 2016 |
| 2407:3680::/32 | 4.3B × /64 | APNIC | MN | 12th Sept 2016 |