203.81.0.0/16
43 assigned ranges in this /16.
/24 breakdown
| Block | Top country | Countries | ASNs | Ranges |
|---|---|---|---|---|
| 203.81.0.0/24 | Hong Kong (100%) | 1 | 1 | 1 |
| 203.81.3.0/24 | Hong Kong (100%) | 1 | 1 | 1 |
| 203.81.6.0/24 | Hong Kong (100%) | 1 | 1 | 1 |
| 203.81.8.0/24 | South Korea (100%) | 1 | 1 | 1 |
| 203.81.11.0/24 | South Korea (100%) | 1 | 1 | 1 |
| 203.81.12.0/24 | Japan (100%) | 1 | 1 | 1 |
| 203.81.34.0/24 | Singapore (100%) | 1 | 1 | 1 |
| 203.81.36.0/24 | Singapore (100%) | 1 | 1 | 1 |
| 203.81.37.0/24 | Hong Kong (100%) | 1 | 1 | 1 |
| 203.81.41.0/24 | Hong Kong (100%) | 1 | 1 | 1 |
| 203.81.44.0/24 | Hong Kong (100%) | 1 | 1 | 1 |
| 203.81.56.0/24 | Hong Kong (100%) | 1 | 1 | 1 |
| 203.81.62.0/24 | Hong Kong (100%) | 1 | 1 | 1 |
| 203.81.64.0/24 | Myanmar (100%) | 1 | 1 | 1 |
| 203.81.77.0/24 | Myanmar (100%) | 1 | 1 | 1 |
| 203.81.86.0/24 | Myanmar (100%) | 1 | 1 | 1 |
| 203.81.94.0/24 | Myanmar (100%) | 1 | 1 | 1 |
| 203.81.99.0/24 | Sri Lanka (100%) | 1 | 1 | 1 |
| 203.81.104.0/24 | Sri Lanka (100%) | 1 | 1 | 1 |
| 203.81.112.0/24 | Japan (100%) | 1 | 1 | 1 |
| 203.81.128.0/24 | South Korea (100%) | 1 | 1 | 1 |
| 203.81.160.0/24 | Myanmar (100%) | 1 | 1 | 1 |
| 203.81.167.0/24 | Myanmar (100%) | 1 | 1 | 1 |
| 203.81.168.0/24 | Myanmar (100%) | 1 | 1 | 1 |
| 203.81.170.0/24 | Myanmar (100%) | 1 | 1 | 1 |
| 203.81.176.0/24 | Hong Kong (100%) | 1 | 1 | 1 |
| 203.81.177.0/24 | Taiwan (100%) | 1 | 1 | 1 |
| 203.81.178.0/24 | Hong Kong (100%) | 1 | 1 | 1 |
| 203.81.179.0/24 | Taiwan (100%) | 1 | 1 | 1 |
| 203.81.180.0/24 | Hong Kong (100%) | 1 | 1 | 1 |
| 203.81.184.0/24 | Indonesia (100%) | 1 | 1 | 1 |
| 203.81.188.0/24 | Indonesia (100%) | 1 | 1 | 1 |
| 203.81.191.0/24 | Indonesia (100%) | 1 | 1 | 1 |
| 203.81.192.0/24 | United States (100%) | 1 | 1 | 1 |
| 203.81.208.0/24 | Russia (100%) | 1 | 1 | 1 |
| 203.81.221.0/24 | Russia (100%) | 1 | 1 | 1 |
| 203.81.230.0/24 | Pakistan (100%) | 1 | 1 | 1 |
| 203.81.231.0/24 | Pakistan (100%) | 1 | 1 | 1 |
| 203.81.236.0/24 | Pakistan (100%) | 1 | 1 | 1 |
| 203.81.239.0/24 | Pakistan (100%) | 1 | 1 | 1 |
| 203.81.240.0/24 | India (100%) | 1 | 1 | 1 |
| 203.81.248.0/24 | Indonesia (100%) | 1 | 1 | 1 |
| 203.81.252.0/24 | Hong Kong (100%) | 1 | 1 | 1 |
Assigned ranges
| Range | ASN | Org | Country |
|---|---|---|---|
203.81.0.0 – 203.81.0.255 | AS23764 | China Telecom Global Limited | HK |
203.81.3.0 – 203.81.4.255 | AS23764 | China Telecom Global Limited | HK |
203.81.6.0 – 203.81.6.255 | AS23764 | China Telecom Global Limited | HK |
203.81.8.0 – 203.81.9.255 | AS9693 | KFTC | KR |
203.81.11.0 – 203.81.11.255 | AS9693 | KFTC | KR |
203.81.12.0 – 203.81.15.255 | AS23616 | Hitachi Systems Ltd. | JP |
203.81.34.0 – 203.81.34.255 | AS4628 | PACIFIC INTERNET (S) PTE. LTD. | SG |
203.81.36.0 – 203.81.36.255 | AS4628 | PACIFIC INTERNET (S) PTE. LTD. | SG |
203.81.37.0 – 203.81.37.255 | AS4637 | Telstra International Limited | HK |
203.81.41.0 – 203.81.41.255 | AS4637 | Telstra International Limited | HK |
203.81.44.0 – 203.81.46.255 | AS4637 | Telstra International Limited | HK |
203.81.56.0 – 203.81.56.255 | AS4637 | Telstra International Limited | HK |
203.81.62.0 – 203.81.62.255 | AS4637 | Telstra International Limited | HK |
203.81.64.0 – 203.81.76.255 | AS9988 | Myanma Post & Telecommunication | MM |
203.81.77.0 – 203.81.85.255 | AS9988 | Myanma Post & Telecommunication | MM |
28 more ranges in this block.