Data as of Nov 7, 2026
210.51.250.0/24
No anonymizer space · no proxy exits in 30 daysCHINA UNICOM Industrial Internet Backbone · space held by China Unicom IP network
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 210.51.192.0/18 since May 2005 | AS9929 | Internet provider | China Unicom IP network | ||
| 210.51.0.0/16 since May 2005 | AS9929 | Internet provider | 62 | China Unicom IP network |
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 210.51.0.0/16 | 65,536 | UNICOM-CN | China Unicom IP network | ALLOCATED PORTABLE | — | hqs-ipabuse@ |
| └ 210.51.250.0/25 | 128 | shanghai-zhangjin-corp | shanghai city | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ via UNICOM-CN |
| └ 210.51.250.160/28 | 16 | wenzhou-jintai-mansion | wenzhou city,zhejiang province | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ via UNICOM-CN |
| └ 210.51.250.176/28 | 16 | wenzhou-huahai-plaza | wenzhou city,zhejiang province | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ via UNICOM-CN |
| └ 210.51.250.192/28 | 16 | WENZHOU-YUDA-MANSION | wenzhou city | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ via UNICOM-CN |
| └ 210.51.250.208/28 | 16 | WENZHOU-CHAOYANG-MANSION | wenzhou city | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ via UNICOM-CN |
| └ 210.51.250.224/28 | 16 | WENZHOU-HUANQIU-MANSION | wenzhou city | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ via UNICOM-CN |
| └ 210.51.250.240/28 | 16 | WENZHOU-LONGSHE-SQUARE | wenzhou city | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ via UNICOM-CN |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
256 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Business | 224 | 88% | 7 | |
| Internet provider | 32 | 13% | 1 |
Network & registry
Announced by
Covering announcement 210.51.248.0/21
- Prefix
- 210.51.248.0/21
- Announced by
- AS9929 CHINA UNICOM Industrial Internet Backbone
- Type
- Internet provider
- RPKI
- RPKI valid
- Netname
- UNICOM-CN
- Registrant
- China Unicom IP network
- RIR
- APNIC
Origin network
AS9929
CN
- Name
- CHINA UNICOM Industrial Internet Backbone
- Type
- Internet provider
- Registered
- Apr 5, 2000
- Domain
- chinaunicom.cn
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
210.51.248.0/21
Routing history
- Pattern
- Stable
- First seen
- Jul 2024
- Current origin since
- Jul 2024 · 2.3 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 210.51.248.0/21 | AS9929 | /21 | APNIC | RPKI valid |
| 210.51.192.0/18 | AS9929 | /18 | APNIC | Too specific |
Whois
Registration for this announcement
- Range
- 210.
51. 0. 0/ 16 - Netname
- UNICOM-CN
- Registrant
- China Unicom IP network
- Registrant country
- CN
- Organization
- China Unicom IP network
- Org country
- CN
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Oct 21, 2023
- Maintainer
- APNIC-HM
- RIR
- APNIC
- Country
- CN
- Delegated
- Oct 11, 2000
- Status
- assigned
Report abuse
Abuse contact
- hqs-ipabuse@
chinaunicom. cn - Name
- ABUSE CUCN
- Handle
- AC1718-AP