Data as of Nov 14, 2026
47.251.232.0/24
No anonymizer space · no proxy exits in 30 daysAlibaba (US) Technology Co., Ltd. · space held by Alibaba Cloud LLC
Announcement
this exact prefix
RPKI valid
Announced by
Type
Hosting
Risk
50 / 100 · Medium
Recent change
New origin May 2026
its first announcement on record
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 47.251.128.0/17 since Aug 2018 | AS45102 | Hosting | Alibaba Cloud LLC | |
| 47.251.0.0/16 since May 2018 | AS45102 | Hosting | Alibaba Cloud LLC |
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 |
|---|---|---|---|---|---|---|
| 47. | 327,680 | AL-3 | Alibaba Cloud LLC (AL-3) · US | Direct Allocation | Apr 15, 2016 | intl-abuse@ |
| └ 47.251.0.0/16 | 65,536 | ALIBABA CLOUD - US | Alibaba Cloud - US (C07028253) · US | Reassigned | Jul 24, 2018 | intl-abuse@ via AL-3 |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
IPv4 market
Holder
- Organization
- Alibaba Cloud LLC
- Handle
- AL-3
- Range
- 47.
250. 0. 0 - 47. 254. 255. 255 - Registration type
- Direct Allocation
- Record created
- Apr 15, 2016
Origin network
AS45102
CN
- Name
- Alibaba (US) Technology Co., Ltd.
- Type
- Hosting
- Registered
- Feb 1, 2008
- Domain
- alibabagroup.com
- Website
- alibabagroup.com/
- Industry
- Hosting and Cloud Provider
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2026
- Current origin since
- May 2026 · 6 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 47.251.0.0/16 | AS45102 | /24 | ARIN | RPKI valid |
| 47.251.0.0/16 | AS134963 | /24 | ARIN | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS45102 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Dec 22, 2016 |
Whois
Registration for this announcement
- Range
- 47.
251. 0. 0/ 16 - Netname
- ALIBABA CLOUD - US
- Registrant
- Alibaba Cloud - US
- Organization
- Alibaba Cloud - US (C07028253)
- Type
- Reassigned
- Handle
- NET-47-251-0-0-1
- Parent
- NET-47-250-0-0-1
- Created
- Jul 24, 2018
- RIR
- ARIN
- Country
- US
- Delegated
- Apr 15, 2016
- Status
- assigned
Report abuse
Abuse contact
- intl-abuse@
list. alibaba-inc. com - Name
- Network Abuse
- Phone
- +1-408-785-5580
- Handle
- NETWO4028-ARIN