Data as of Nov 6, 2026
42.245.251.0/24
No anonymizer space · no proxy exits in 30 daysCERNET New Technology Co., Ltd · space held by China Education and Research Network
Announced by
Type
Business
Risk
0 / 100 · Low
Recent change
New origin Sep 18, 2026
from AS133111 CERNET New Technology Co., Ltd, after 2.5 years unannounced
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 42.245.0.0/16 since Sep 18, 2026 | AS4538 | Business | China Education and Research 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 |
|---|---|---|---|---|---|---|
| 42.244.0.0/14 | 262,144 | NJR-CERNET | China Education and Research Network | ALLOCATED PORTABLE | — | abuse@ |
| └ 42.245.251.0/24 | 256 | GXNWY-CN | ~{H|6{PB<<Ju~} | ASSIGNED NON-PORTABLE | — | abuse@ |
Network & registry
Announced by
Covering announcement 42.245.192.0/18
- Prefix
- 42.245.192.0/18
- Announced by
- AS133111 CERNET New Technology Co., Ltd
- Type
- Business
- RPKI
- No RPKI
- Netname
- NJR-CERNET
- Registrant
- China Education and Research Network
- RIR
- APNIC
Origin network
AS133111
CN
- Name
- CERNET New Technology Co., Ltd
- Type
- Education
- Registered
- Oct 8, 2013
- Domain
- cernet.com
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
42.245.192.0/18
Routing history
- Pattern
- Stable
- First seen
- Jan 2024
- Current origin since
- Sep 18, 2026 · 2 mo
- Origin networks
- 1
IRR
Route objects on 42.245.192.0/18
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS133111 | APNIC | CERNET Newtech | MAINT-CERNET-AP | Mar 14, 2017 |
Whois
Registration for this announcement
- Range
- 42.
244. 0. 0/ 14 - Netname
- NJR-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
- Mar 18, 2011
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cernet. edu. cn - Name
- ABUSE CERNETAP
- Handle
- AC1685-AP