Data as of Nov 7, 2026
121.52.208.0/20
No anonymizer space · no proxy exits in 30 daysChina Networks Inter-Exchange · space held by CNISP-Union Technology (Beijing) Co., Ltd
Announcement
this exact prefix
RPKI valid
Announced by
Type
Hosting
Risk
50 / 100 · Medium
Recently moved
Recent change
New origin Nov 6, 2026
from AS4808 China Unicom Beijing 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 |
|---|---|---|---|---|---|---|
| 121.52.208.0/20 | 4,096 | CNISP-UNION | CNISP-Union Technology (Beijing) Co., Ltd | ALLOCATED PORTABLE | — | ipas@ |
| └ 121.52.208.0/21 | 2,048 | TopnewNET | Beijing Topnew Info&Tech co., LTD. | ALLOCATED NON-PORTABLE | — | support@ |
| └ 121.52.216.0/21 | 2,048 | TopnewNET | Beijing Topnew Info&Tech co., LTD. | ALLOCATED NON-PORTABLE | — | support@ |
Network & registry
Origin network
AS4847
CN
- Name
- China Networks Inter-Exchange
- Type
- Internet provider
- Registered
- Sep 10, 1996
- Domain
- bta.net.cn
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Rotating
- First seen
- Dec 2007
- Current origin since
- Nov 6, 2026 · under a month
- Origin networks
- 2
- Last change of origin
- Sep 18, 2026
Recorded history
History
- Handoffs
- 2
- Also announced by
- 4808
RPKI
Route origin authorizations
IRR
Route objects on the exact prefix
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 121.52.216.0/21 | AS24404 | RADB | CMI (Customer Route) | MAINT-AS58453 | Nov 13, 2023 |
| 121.52.216.0/21 | AS24404 | NTTCOM | CMI IP Transit | MAINT-CMI-INT-HK | May 25, 2016 |
| 121.52.222.0/24 | AS4847 | RADB | regist for user | MAINT-AS4847 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 121.
52. 208. 0/ 20 - Netname
- CNISP-UNION
- Registrant
- CNISP-Union Technology (Beijing) Co., Ltd
- Registrant country
- CN
- Organization
- CNISP-Union Technology (Beijing) Co., 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
- Nov 7, 2007
- Status
- assigned
Report abuse
Abuse contact
- ipas@
cnnic. cn - Name
- ABUSE CNNICCN
- Handle
- AC1601-AP