Data as of Nov 8, 2026
124.251.32.0/19
No anonymizer space · no proxy exits in 30 daysIDC, China Telecommunications Corporation · space held by 21ViaNet(China),Inc.
Announcement
this exact prefix
RPKI valid
Announced by
Type
Hosting
Recent change
New origin Nov 6, 2026
from AS4808 China Unicom Beijing Province Network
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 124.251.0.0/18 since Aug 2016 | AS23724 | Hosting | 21ViaNet(China),Inc. | |
| 124.251.0.0/17 since Nov 6, 2026 | AS9308 | Hosting | 21ViaNet(China),Inc. | |
| 124.251.0.0/16 since May 2020 | AS9308 | Hosting | 21ViaNet(China),Inc. | |
| 124.250.0.0/15 since May 2017 | AS23724 | Hosting | 21ViaNet(China),Inc. |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 124.251.44.0/22 since Nov 6, 2026 | AS9308 | Hosting | 21ViaNet(China),Inc. | |
| 124.251.48.0/22 since Nov 6, 2026 | AS9308 | Hosting | 21ViaNet(China),Inc. |
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 |
|---|---|---|---|---|---|---|
| 124.250.0.0/15 | 131,072 | CHINA-21VIANET | 21ViaNet(China),Inc. | ALLOCATED PORTABLE | — | ipas@ |
| └ 124.251.0.0/16 | 65,536 | CHINA-21VIANET | 21ViaNet(China),Inc. | ALLOCATED PORTABLE | — | ipas@ |
Network & registry
Registry
Holder
- Organization
- 21ViaNet(China),Inc.
- Range
- 124.
250. 0. 0/ 15 - Registration type
- ALLOCATED PORTABLE
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
Summary
Routing history
- Pattern
- Rotating
- First seen
- Jan 2016
- Current origin since
- Nov 6, 2026 · under a month
- Origin networks
- 5
- Last change of origin
- Sep 18, 2026
Recorded history
History
- Handoffs
- 4
- Also announced by
- 4808
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 124.251.0.0/16 | AS4808 | /32 | APNIC | Another network |
| 124.251.0.0/16 | AS4835 | /32 | APNIC | Another network |
| 124.251.0.0/16 | AS4847 | /32 | APNIC | Another network |
| 124.251.0.0/16 | AS9308 | /32 | APNIC | Another network |
| 124.251.0.0/16 | AS9802 | /32 | APNIC | Another network |
| 124.251.0.0/16 | AS9808 | /32 | APNIC | Another network |
| 124.251.0.0/16 | AS17428 | /32 | APNIC | Another network |
| 124.251.0.0/16 | AS23724 | /32 | APNIC | RPKI valid |
| 124.251.0.0/16 | AS56048 | /32 | APNIC | Another network |
| 124.251.0.0/16 | AS59020 | /32 | APNIC | Another network |
| 124.251.0.0/16 | AS133111 | /32 | APNIC | Another network |
| 124.251.0.0/16 | AS141679 | /32 | APNIC | Another network |
IRR
Route objects on the exact prefix
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 124.251.32.0/24 | AS4835 | RADB | chinanet/CN2 shaanxi province network | MAINT-AS4835 | Nov 13, 2023 |
| 124.251.41.0/24 | AS9308 | RADB | CMI (Customer Route) | MAINT-AS58453 | Nov 13, 2023 |
| 124.251.41.0/24 | AS9308 | NTTCOM | CMI IP Transit | MAINT-CMI-INT-HK | May 12, 2015 |
| 124.251.56.0/23 | AS56048 | RADB | CMI (Customer Route) | MAINT-AS58453 | Nov 13, 2023 |
| 124.251.58.0/23 | AS56048 | RADB | CMI (Customer Route) | MAINT-AS58453 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 124.
251. 0. 0/ 16 - Netname
- CHINA-21VIANET
- Registrant
- 21ViaNet(China),Inc.
- Registrant country
- CN
- Organization
- 21ViaNet(China),Inc.
- Org country
- CN
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Jun 16, 2021
- Maintainer
- MAINT-CNNIC-AP
- RIR
- APNIC
- Country
- CN
- Delegated
- May 12, 2006
- Status
- assigned
Report abuse
Abuse contact
- ipas@
cnnic. cn - Name
- ABUSE CNNICCN
- Handle
- AC1601-AP