Data as of Nov 7, 2026
121.58.156.0/23
No anonymizer space · no proxy exits in 30 daysChina Unicom Beijing Province Network · space held by CNISP-Union Technology (Beijing) Co., Ltd
Announcement
this exact prefix
RPKI valid
Announced by
Type
Unknown
Risk
40 / 100 · Medium
Leased space · Recently moved
Recent change
New origin Sep 18, 2026
from AS4847 China Networks Inter-Exchange
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 121.58.156.0/22 since Oct 2020 | AS4847 | Unknown | 1 | CNISP-Union Technology (Beijing) Co., Ltd via Longtel Networks & Technologies LTD. |
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 |
|---|---|---|---|---|---|---|
| 121.58.144.0/20 | 4,096 | CNISP-UNION | CNISP-Union Technology (Beijing) Co., Ltd | ALLOCATED PORTABLE | — | ipas@ |
| └ 121.58.152.0/21 | 2,048 | LTEL | Longtel Networks & Technologies LTD. | ALLOCATED NON-PORTABLE | — | support@ |
Network & registry
Registry
Holder
- Organization
- CNISP-Union Technology (Beijing) Co., Ltd
- Range
- 121.
58. 144. 0/ 20 - Registration type
- ALLOCATED PORTABLE
- Reallocated to
- Longtel Networks & Technologies LTD.
- Reallocated range
- 121.
58. 152. 0/ 21 - Reallocation type
- ALLOCATED NON-PORTABLE
Origin network
AS4808
CN
- Name
- China Unicom Beijing Province Network
- Type
- Internet provider
- Registered
- Jan 9, 1996
- Domain
- 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
- Rotating
- First seen
- Jun 2021
- Current origin since
- Sep 18, 2026 · 2 mo
- Origin networks
- 2
- Last change of origin
- Sep 18, 2026
Recorded history
History
- Handoffs
- 1
- Also announced by
- 4847;38364
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 121.58.156.0/23 | AS4808 | /23 | APNIC | RPKI valid |
| 121.58.156.0/23 | AS4847 | /23 | APNIC | Another network |
| 121.58.156.0/23 | AS38364 | /23 | APNIC | Another network |
| 121.58.156.0/22 | AS4847 | /22 | APNIC | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS4847 not the origin | RADB | regist for end user | MAINT-AS4847 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 121.
58. 152. 0/ 21 - Netname
- LTEL
- Registrant
- Longtel Networks & Technologies LTD.
- Registrant country
- CN
- Organization
- Longtel Networks & Technologies LTD.
- Org country
- CN
- Type
- ALLOCATED NON-PORTABLE
- Created
- Not stated by the registry
- Updated
- Feb 17, 2021
- Maintainer
- MAINT-AP-CNISP
- RIR
- APNIC
- Country
- CN
- Delegated
- Nov 13, 2007
- Status
- assigned
Report abuse
Abuse contact
- support@
cnispgroup. com - Name
- ABUSE CNISPCN
- Handle
- AC1910-AP