Data as of Nov 7, 2026
210.51.235.0/24
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 the announcement: those covering it, widest first, then every record inside it, 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@ |
| └ 210.51.235.0/25 | 128 | CHENGDU-29INS | The 29th Telecommunication | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ via UNICOM-CN |
| └ 210.51.235.128/26 | 64 | ZHONGDA-GROUP | HangZhou ZhongDa Group Co. | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ via UNICOM-CN |
| └ 210.51.235.192/28 | 16 | ZHEJIANG-GUANGTONG-NETWORK | hangzhou city | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ via UNICOM-CN |
| └ 210.51.235.224/30 | 4 | NANFANG-ZHENGQUAN | hangzhou city | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ via UNICOM-CN |
| └ 210.51.235.228/30 | 4 | JINDIAN-NETBAR | jindian netbar of wenzhou city,zhejiang province | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ via UNICOM-CN |
| └ 210.51.235.232/29 | 8 | PRODUCT-MARKET | hangzhou city | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ via UNICOM-CN |
| └ 210.51.235.240/29 | 8 | JIAXING-INTERNET-COFFEE-SHOP | JiaXing Internet Coffee Shop | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ via UNICOM-CN |
| └ 210.51.235.248/29 | 8 | KUNMING-750INS | The 750th Institute of CSIC | 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 | 240 | 94% | 8 | |
| Internet provider | 16 | 6.3% | 1 |
Network & registry
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
Summary
Routing history
- Pattern
- Stable
- First seen
- Apr 2012
- Current origin since
- Apr 2012 · 15 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 210.51.235.0/24 | AS9929 | /24 | APNIC | RPKI valid |
| 210.51.192.0/18 | AS9929 | /18 | APNIC | Too specific |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS9929 | APNIC | cuii_zjhz | MAINT-CNCGROUP-RR | Aug 23, 2021 |
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