Data as of Nov 10, 2026
218.57.131.0/28
No anonymizer space · no proxy exits in 30 daysCHINA UNICOM China169 Backbone · space held by China Unicom Shandong province network
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 218.56.0.0/15 since May 2005 | AS4837 | Residential | 494 31 always on | China Unicom Shandong province 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 |
|---|---|---|---|---|---|---|
| 218.56.0.0/14 | 262,144 | UNICOM-SD | China Unicom Shandong province network | ALLOCATED PORTABLE | — | hqs-ipabuse@ |
| └ 218.57.131.0/28 | 16 | SDBT-EDU | Shandong Boradcast & TV University | ASSIGNED NON-PORTABLE | — | hqs-ipabuse@ via UNICOM-SD |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
Announced by
Covering announcement 218.57.131.0/24
- Prefix
- 218.57.131.0/24
- Announced by
- AS4837 CHINA UNICOM China169 Backbone
- Type
- Residential
- RPKI
- RPKI valid
- Netname
- UNICOM-SD
- Registrant
- China Unicom Shandong province network
- 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
Covering aggregate above, the prefix's own history below
218.57.131.0/24
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 218.57.131.0/24 | AS4837 | /24 | APNIC | RPKI valid |
| 218.56.0.0/15 | AS4837 | /15 | APNIC | Too specific |
Whois
Registration for this announcement
- Range
- 218.
56. 0. 0/ 14 - Netname
- UNICOM-SD
- Registrant
- China Unicom Shandong province network
- Registrant country
- CN
- Organization
- China Unicom Shandong province 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
- Jun 19, 2001
- Status
- assigned
Report abuse
Abuse contact
- hqs-ipabuse@
chinaunicom. cn - Name
- ABUSE CUCN
- Handle
- AC1718-AP