Data as of Nov 3, 2026
58.155.0.0/16
No anonymizer space · no proxy exits in 30 daysChina Education and Research Network Center · space held by China Education and Research Network
Announcement
this exact prefix
No RPKI
Announced by
Type
Business
Recent change
New origin Sep 18, 2026
from AS4538 China Education and Research Network Center, after 1.8 years unannounced
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 58.154.0.0/15 since Oct 2006 | AS4538 | Business | 1 1 always on | China Education and Research Network |
Nesting
More-specifics by size
Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 58.155.0.0/20 | AS4538 | Business | China Education and Research Network | |
| 58.155.16.0/21 | AS4538 | Business | China Education and Research Network | |
| 58.155.24.0/21 | AS4538 | Business | China Education and Research Network | |
| 58.155.32.0/20 | AS4538 | Business | China Education and Research Network | |
| 58.155.48.0/20 | AS4538 | Business | China Education and Research Network | |
| 58.155.50.0/24 | AS4538 | Business | China Education and Research Network | |
| 58.155.51.0/24 | AS4538 | Business | China Education and Research Network | |
| 58.155.53.0/24 | AS4538 | Business | China Education and Research Network | |
| 58.155.62.0/24 | AS4538 | Business | China Education and Research Network | |
| 58.155.63.0/24 | AS4538 | Business | China Education and Research Network | |
| 58.155.71.0/24 | AS4538 | Business | China Education and Research Network | |
| 58.155.96.0/20 | AS4538 | Business | China Education and Research Network | |
| 58.155.124.0/22 | AS4538 | Business | China Education and Research Network | |
| 58.155.128.0/23 | AS4538 | Business | China Education and Research Network | |
| 58.155.130.0/23 | AS4538 | Business | China Education and Research Network | |
| 58.155.132.0/23 | AS4538 | Business | China Education and Research Network | |
| 58.155.134.0/23 | AS4538 | Business | China Education and Research Network | |
| 58.155.136.0/23 | AS4538 | Business | China Education and Research Network | |
| 58.155.144.0/22 | AS4538 | Business | China Education and Research Network | |
| 58.155.156.0/22 | AS4538 | Business | China Education and Research Network | |
| 58.155.160.0/21 | AS4538 | Business | China Education and Research Network | |
| 58.155.168.0/22 | AS4538 | Business | China Education and Research Network | |
| 58.155.172.0/22 | AS4538 | Business | China Education and Research Network | |
| 58.155.176.0/20 | AS4538 | Business | China Education and Research Network | |
| 58.155.192.0/20 | AS4538 | Business | China Education and Research Network | |
| 58.155.208.0/20 | AS4538 | Business | China Education and Research Network | |
| 58.155.224.0/20 | AS4538 | Business | China Education and Research Network | |
| 58.155.240.0/20 | AS4538 | Business | China Education and Research Network |
Network & registry
Origin network
AS4538
CN
- Name
- China Education and Research Network Center
- Type
- Education
- Registered
- Aug 1, 2002
- Domain
- cernet.edu.cn
- Website
- www.edu.cn
- Industry
- Colleges, Universities, and Professional Schools
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jun 2014
- Current origin since
- Sep 18, 2026 · 2 mo
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS4538 | APNIC | CERNET | MAINT-CERNET-AP | Jan 5, 2009 |
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 58.155.64.0/19 | AS4538 | RADB | CMI (Customer Route) | MAINT-AS58453 | Nov 13, 2023 |
| 58.155.64.0/19 | AS4538 | NTTCOM | CMI IP Transit | MAINT-CMI-INT-HK | May 25, 2016 |
| 58.155.148.0/22 | AS4538 | RADB | CMI (Customer Route) | MAINT-AS58453 | Nov 13, 2023 |
| 58.155.148.0/22 | AS4538 | NTTCOM | CMI IP Transit | MAINT-CMI-INT-HK | May 25, 2016 |
Whois
Registration for this announcement
- Range
- 58.154.0.0/15
- Netname
- SYR-CERNET
- Registrant
- China Education and Research Network
- Registrant country
- CN
- Organization
- China Education and Research Network
- Org country
- CN
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Sep 3, 2020
- Maintainer
- APNIC-HM
- RIR
- APNIC
- Country
- CN
- Delegated
- Sep 18, 2006
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- ABUSE CERNETAP
- Handle
- AC1685-AP