Data as of Nov 7, 2026
157.122.136.0/21
No anonymizer space · no proxy exits in 30 daysChina Unicom Guangzhou network · space held by China Unicom Guangdong province network
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 157.122.0.0/16 since Sep 2011 | AS17816 | Residential | 249 9 always on | China Unicom Guangdong province network |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 157.122.136.0/22 since Apr 2016 | AS17622 | Residential | China Unicom Guangdong province network | |
| 157.122.140.0/22 since Apr 2016 | AS17622 | Residential | China Unicom Guangdong province 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 |
|---|---|---|---|---|---|---|
| 157.122.0.0/16 | 65,536 | UNICOM-GD | China Unicom Guangdong province network | ALLOCATED PORTABLE | — | hqs-ipabuse@ |
| └ 157.122.136.0/21 | 2,048 | GuangZhou-unicom | United-Communications-Network-Technology-Co-Ltd, GuangZhou | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ |
Network & registry
Registry
Holder
- Organization
- China Unicom Guangdong province network
- Range
- 157.
122. 0. 0/ 16 - Registration type
- ALLOCATED PORTABLE
Origin network
AS17622
CN
- Name
- China Unicom Guangzhou network
- Type
- Internet provider
- Registered
- Jan 18, 2001
- Domain
- chinaunicom.cn
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Aug 2011
- Current origin since
- Aug 2011 · 15 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 157.122.136.0/21 | AS17622 | /21 | APNIC | RPKI valid |
| 157.122.0.0/16 | AS17816 | /16 | APNIC | Another network |
Whois
Registration for this announcement
- Range
- 157.
122. 136. 0/ 21 - Netname
- GuangZhou-unicom
- Registrant
- United-Communications-Network-Technology-Co-Ltd, GuangZhou
- Registrant country
- CN
- Organization
- United-Communications-Network-Technology-Co-Ltd, GuangZhou
- Org country
- CN
- Type
- ASSIGNED NON-PORTABLE
- Created
- Not stated by the registry
- Updated
- Jan 22, 2025
- Maintainer
- MAINT-CNCGROUP-GD
- RIR
- APNIC
- Country
- CN
- Delegated
- Mar 30, 2011
- Status
- assigned
Report abuse
Abuse contact
- hqs-ipabuse@
chinaunicom. cn - Name
- ABUSE CUCN
- Handle
- AC1718-AP