Data as of Nov 3, 2026
191.124.158.0/24
Anonymizer · Datacenter proxyArosscloud Inc. · space held by Fastmos Co., Limited
Announcement
this exact prefix
RPKI valid
Announced by
Type
Datacenter proxy
Risk
85 / 100 · Critical
Recent change
New origin Sep 2026
its first announcement on record
IPv4 market
Path
Announced by AS400619 since Sep 2026 · 9 wk ago
1 · Holder
4 · Use
Datacenter proxy
anonymizer space, operator not named
Operators, sellers and brokers
Leased from
Owners leasing their own space
| Name | In 191.124.158.0/24 | /24s |
|---|---|---|
| Fastmos Co., Limited | 256100% | 1 |
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
191.124.158.0/24
From the registry to its use
- Sep 4, 2026– Nov 2, 2026
- todayRegistry recordFastmos Co., LimitedALLOCATED PORTABLE191.124.0.0/16
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 |
|---|---|---|---|---|---|---|
| 191.124.0.0/16 | 65,536 | FASTMOS2-HK | Fastmos Co., Limited (ORG-FCL17-AP) · HK | ALLOCATED PORTABLE | — | [email protected] |
| └ 191.124.144.0/20 | 4,096 | FASTMOS2-HK | Fastmos Co., Limited | ASSIGNED NON-PORTABLE | — | [email protected] |
Network & registry
IPv4 market
Holder
- Organization
- Fastmos Co., Limited
- Handle
- ORG-FCL17-AP
- Range
- 191.124.0.0/16
- Registration type
- ALLOCATED PORTABLE
Origin network
AS400619
US
- Name
- Arosscloud Inc.
- Type
- Hosting
- Registered
- Apr 11, 2022
- Domain
- arosscloud.com
- Website
- www.arosscloud.com/
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Sep 2026
- Current origin since
- Sep 2026 · 2 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 191.124.158.0/24 | AS400619 | /24 | APNIC | RPKI valid |
Whois
Registration for this announcement
- Range
- 191.124.144.0/20
- Netname
- FASTMOS2-HK
- Registrant
- Fastmos Co., Limited
- Registrant country
- HK
- Organization
- Fastmos Co., Limited
- Org country
- HK
- Type
- ASSIGNED NON-PORTABLE
- Created
- Not stated by the registry
- Updated
- Sep 8, 2026
- Maintainer
- MAINT-FASTMOS2-HK
- RIR
- APNIC
- Country
- HK
- Delegated
- Oct 9, 2013
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- IRT-FASTMOS2-HK1
- Handle
- IRT-FASTMOS2-HK1