Data as of Nov 5, 2026
221.199.1.0/24
No anonymizer space · no proxy exits in 30 daysCHINA UNICOM China169 Backbone · space held by China Unicom Ningxia province network
Announcement
this exact prefix
RPKI valid
Announced by
Type
Residential
95% of it
Recent change
New origin Aug 2026
its first announcement on record
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 221.199.0.0/19 since May 2005 | AS4837 | Residential | 28 1 always on | China Unicom Ningxia province network | |
| 221.199.0.0/17 since Feb 2006 | AS4837 | Residential | 44 2 always on | China Unicom Ningxia 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 |
|---|---|---|---|---|---|---|
| 221.199.0.0/17 | 32,768 | UNICOM-NX | China Unicom Ningxia province network | ALLOCATED PORTABLE | — | hqs-ipabuse@ |
| └ 221.199.1.0/24 | 256 | NX-YC-ningxiaunicom-zhutiyunweibu-shebeihulian | unknown | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ via UNICOM-NX |
| └ 221.199.1.40/29 | 8 | NX-YC-ningxiaunicom-itellin | unknown | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ via NX-YC-ningxiaunicom-zhutiyunweibu-shebeihulian |
| └ 221.199.1.64/30 | 4 | NX-YC-ningxiaunicom-guanlixinxixitongbu | unknown | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ via NX-YC-ningxiaunicom-zhutiyunweibu-shebeihulian |
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 | |
|---|---|---|---|---|
| Residential | 244 | 95% | 3 | |
| Business | 12 | 4.7% | 2 |
Network & registry
Registry
Holder
- Organization
- China Unicom Ningxia province network
- Range
- 221.
199. 0. 0/ 17 - Registration type
- ALLOCATED PORTABLE
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
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Aug 2026
- Current origin since
- Aug 2026 · 3 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 221.199.1.0/24 | AS4837 | /24 | APNIC | RPKI valid |
| 221.199.0.0/19 | AS4837 | /19 | APNIC | Too specific |
| 221.199.0.0/17 | AS4837 | /17 | APNIC | Too specific |
Whois
Registration for this announcement
- Range
- 221.
199. 1. 0/ 24 - Netname
- NX-YC-ningxiaunicom-zhutiyunweibu-shebeihulian
- Registrant country
- CN
- Organization
- Not stated by the registry
- Type
- ASSIGNED NON-PORTABLE
- Created
- Not stated by the registry
- Updated
- Aug 18, 2009
- Maintainer
- MAINT-CNCGROUP-NX
- RIR
- APNIC
- Country
- CN
- Delegated
- Jun 30, 2003
- Status
- assigned
Report abuse
Abuse contact
- hqs-ipabuse@
chinaunicom. cn - Name
- ABUSE CUCN
- Handle
- AC1718-AP