Data as of Nov 7, 2026
42.245.221.0/24
No anonymizer space · no proxy exits in 30 daysCERNET New Technology Co., Ltd · space held by China Education and Research Network
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 42.245.192.0/18 since Sep 18, 2026 | AS133111 | Business | China Education and Research Network | |
| 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 the announcement: those covering it, widest first, then every record inside it, 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@ |
| └ 42.245.208.0/20 | 4,096 | SNDXTC-CN | ~{H|6{PB<<Ju~} | ASSIGNED NON-PORTABLE | — | abuse@ |
Network & registry
Registry
Holder
- Organization
- China Education and Research Network
- Range
- 42.
244. 0. 0/ 14 - Registration type
- ALLOCATED PORTABLE
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
Summary
Routing history
- Pattern
- Stable
- First seen
- Feb 2023
- Current origin since
- Feb 2023 · 3.7 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 42.
245. 208. 0/ 20 - Netname
- SNDXTC-CN
- Registrant
- ~{H|6{PB<
- Registrant country
- CN
- Organization
- ~{H|6{PB<
- Org country
- CN
- Type
- ASSIGNED NON-PORTABLE
- Created
- Not stated by the registry
- Updated
- May 30, 2022
- Maintainer
- MAINT-CERNET-AP
- RIR
- APNIC
- Country
- CN
- Delegated
- Mar 18, 2011
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cernet. edu. cn - Name
- ABUSE CERNETAP
- Handle
- AC1685-AP