Data as of Nov 6, 2026
222.200.0.0/16
No anonymizer space · no proxy exits in 30 daysChina Education and Research Network Center · space held by China Education and Research Network
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | RPKI |
|---|---|---|---|---|
| 222.192.0.0/12 since Jun 2005 | AS4538 | Business | 1,108 15 always on |
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 |
|---|---|---|---|---|
| 222.200.0.0/20 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.32.0/19 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.64.0/22 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.68.0/23 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.70.0/24 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.71.0/24 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.72.0/22 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.76.0/22 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.80.0/20 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.96.0/19 since Sep 2020 | AS4538 | Business | China Education and Research Network | |
| 222.200.128.0/19 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.128.0/24 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.129.0/24 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.160.0/19 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.192.0/23 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.194.0/23 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.196.0/22 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.200.0/23 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.202.0/23 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.204.0/22 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.208.0/23 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.210.0/23 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.212.0/22 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.216.0/21 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.224.0/23 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.226.0/24 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.227.0/24 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.228.0/23 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.230.0/23 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.232.0/24 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.233.0/24 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.234.0/23 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.236.0/23 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.238.0/24 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.239.0/24 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.240.0/23 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.242.0/23 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.244.0/22 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.248.0/23 since Mar 2023 | AS4538 | Business | China Education and Research Network | |
| 222.200.250.0/23 since Mar 2023 | 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
- Rotating
- First seen
- May 2005
- Current origin since
- Dec 2024 · 1.9 yr
- Origin networks
- 2
- Last change of origin
- Nov 2022
Recorded history
History
- Handoffs
- 4
Whois
Registration for this announcement
- Range
- 222.
200. 0. 0/ 14 - Netname
- GZR-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
- Jul 7, 2004
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cernet. edu. cn - Name
- ABUSE CERNETAP
- Handle
- AC1685-AP