Data as of Nov 8, 2026
103.221.142.0/23
No anonymizer space · no proxy exits in 30 daysCHINA UNICOM China169 Backbone · space held by Nangjing sichongzou kemao Ltd.
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 103.221.143.0/24 since May 2025 | AS137702 | Hosting | Nangjing sichongzou kemao Ltd. |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
512 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Hosting | 256 | 50% | 1 | |
| Residential | 256 | 50% | 1 |
Network & registry
Announced by
Covering announcement 103.221.140.0/22
- Prefix
- 103.221.140.0/22
- Announced by
- AS4837 CHINA UNICOM China169 Backbone
- Type
- Residential
- Proxy exits
- 1
- RPKI
- No RPKI
- Netname
- NJSCZ
- Registrant
- Nangjing sichongzou kemao Ltd.
- RIR
- APNIC
Origin network
AS4837
CN
- Name
- CHINA UNICOM China169 Backbone
- Type
- Internet provider
- Registered
- Sep 17, 2001
- Domain
- chinaunicom.cn
- Website
- www.chinaunicom.cn/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 103.221.140.0/22
103.221.140.0/22
Routing history
- Pattern
- Stable
- First seen
- Feb 2017
- Current origin since
- Feb 2017 · 9.7 yr
- Origin networks
- 1
IRR
Route objects on 103.221.140.0/22
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS4837 | APNIC | China Unicom China169 Network | MAINT-CNCGROUP-RR | May 12, 2017 |
Whois
Registration for this announcement
- Range
- 103.
221. 140. 0/ 22 - Netname
- NJSCZ
- Registrant
- Nangjing sichongzou kemao Ltd.
- Registrant country
- CN
- Organization
- Nangjing sichongzou kemao Ltd.
- Org country
- CN
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Nov 28, 2023
- Maintainer
- MAINT-CNNIC-AP
- RIR
- APNIC
- Country
- CN
- Delegated
- Jun 1, 2016
- Status
- assigned
Report abuse
Abuse contact
- ipas@
cnnic. cn - Name
- ABUSE CNNICCN
- Handle
- AC1601-AP