Data as of Nov 9, 2026
101.251.240.0/21
No anonymizer space · no proxy exits in 30 daysIDC, China Telecommunications Corporation · space held by Beijing capitalonline data service co.,LTD
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 101.251.224.0/19 since Nov 2013 | AS23724 | Hosting | Beijing capitalonline data service co.,LTD |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 101.251.241.0/24 since Jan 2024 | AS4808 | Residential | Beijing capitalonline data service co.,LTD | |
| 101.251.243.0/24 since Jan 2024 | AS4808 | Residential | Beijing capitalonline data service co.,LTD | |
| 101.251.246.0/24 since Jan 2024 | AS4808 | Residential | Beijing capitalonline data service co.,LTD |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
2,048 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Hosting | 1,280 | 63% | 4 | |
| Residential | 768 | 38% | 3 |
Network & registry
Announced by
Covering announcement 101.251.240.0/20
- Prefix
- 101.251.240.0/20
- Announced by
- AS23724 IDC, China Telecommunications Corporation
- Type
- Hosting
- RPKI
- RPKI valid
- Netname
- CDSNET
- Registrant
- Beijing capitalonline data service co.,LTD
- RIR
- APNIC
Origin network
AS23724
CN
- Name
- IDC, China Telecommunications Corporation
- Type
- Hosting
- Registered
- Apr 22, 2003
- Domain
- chinatelecom.cn
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
101.251.240.0/20
Routing history
- Pattern
- Stable
- First seen
- Apr 2014
- Current origin since
- Apr 2014 · 13 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 101.251.240.0/20 | AS23724 | /20 | APNIC | RPKI valid |
| 101.251.224.0/19 | AS23724 | /19 | APNIC | Too specific |
IRR
Route objects on 101.251.240.0/20
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS23724 | RADB | ASes Within CT BeiJing IDC | MAINT-AS23724 | Apr 22, 2026 |
Whois
Registration for this announcement
- Range
- 101.
251. 192. 0/ 18 - Netname
- CDSNET
- Registrant
- Beijing capitalonline data service co.,LTD
- Registrant country
- CN
- Organization
- Beijing capitalonline data service co.,LTD
- Org country
- CN
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Nov 28, 2023
- Maintainer
- MAINT-CNNIC-AP
- RIR
- APNIC
- Country
- CN
- Delegated
- Mar 9, 2011
- Status
- assigned
Report abuse
Abuse contact
- ipas@
cnnic. cn - Name
- ABUSE CNNICCN
- Handle
- AC1601-AP