IPv4 prefix
121.16.0.0/12
- IP Prefix (CIDR)
- 121.16.0.0/12
- Subnet Mask
- 255.240.0.0
- Address Count
- 1,048,576
Registration 1 of 4
- Owner
- Asia Pacific Network Information Center, Pty. Ltd.
- Handle
- ORG-APNI3-AP
- Country
-
Australia (AU)
- Address
- Level 1 - 33 Park Road
- Registry
- APNIC
- Registered Prefix
- 121.0.0.0/8 (121.0.0.0 - 121.255.255.255)
- Delegated Prefix
- 121.201.0.0/16 (121.201.0.0 - 121.201.255.255)
Registration 2 of 4
- Handle
- IRT-CU-CN
- Country
-
China (CN)
- Address
- No.21,Financial Street Beijing,100033 P.R.China
- Registry
- APNIC
- Registered Prefixes
-
121.16.0.0/13 (121.16.0.0 - 121.23.255.255)
121.24.0.0/14 (121.24.0.0 - 121.27.255.255)
121.28.0.0/15 (121.28.0.0 - 121.29.255.255)
121.31.0.0/16 (121.31.0.0 - 121.31.255.255)
Registration 3 of 4
- Owner
- guobin-coLtd
- Country
-
China (CN)
- Registry
- APNIC
- Registered Prefix
- 121.28.0.0/29 (121.28.0.0 - 121.28.0.7)
- Delegated Prefix
- 121.28.0.0/15 (121.28.0.0 - 121.29.255.255)
Registration 4 of 4
- Owner
- da tong
- Handle
- DT449-AP
- Country
-
China (CN)
- Address
- Shan Xi DaTong
- Registry
- APNIC
- Registered Prefix
- 121.30.0.0/32 (121.30.0.0 - 121.30.0.0)
- Delegated Prefix
- 121.30.0.0/16 (121.30.0.0 - 121.30.255.255)
| Announced Prefix | Relationship | Origin ASN | Description | Country | First Address | Last Address |
|---|---|---|---|---|---|---|
| 121.16.0.0/12 | Exact | AS4837 | CHINA UNICOM China169 Backbone |
China (CN)
|
121.16.0.0 | 121.31.255.255 |
| 121.29.26.0/24 | More specific | AS9929 | CHINA UNICOM Industrial Internet Backbone |
China (CN)
|
121.29.26.0 | 121.29.26.255 |
| 121.31.28.0/22 | More specific | AS140886 | China Unicom |
China (CN)
|
121.31.28.0 | 121.31.31.255 |
| 121.31.40.0/22 | More specific | AS140886 | China Unicom |
China (CN)
|
121.31.40.0 | 121.31.43.255 |