Data as of Nov 3, 2026
187.31.11.0/24
Anonymizer · Datacenter proxySinfony6, LLC
Announcement
this exact prefix
No RPKI
Announced by
Type
Datacenter proxy
Risk
85 / 100 · Critical
Recent change
New origin Jun 2026
its first announcement on record
IPv4 market
Path
Announced by AS29987 since Jun 2026 · 4 mo ago
1 · Holder
2 · Leased from
not leased
Operators, sellers and brokers
Proxy providers
| Name | Parent | In 187.31.11.0/24 | /24s |
|---|---|---|---|
| Nox Proxy | 256100% | 1 |
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
187.31.11.0/24
From the registry to its use
- Dec 12, 2008AssignedOi S.A. - Em Recuperação Judicial187.31.8.0/22
- Dec 15, 2008– Nov 7, 2025
- Oct 27, 2025– Jul 5, 2026
- Jun 24, 2026– Nov 2, 2026
- Jun 24, 2026– Nov 2, 2026
- todayUsedNox ProxyProxy seller
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Anonymizer addresses | Operator | Proxy exits | RPKI |
|---|---|---|---|---|---|---|
| 187.31.0.0/16 since Jun 2026 | AS14571 | Residential | 1,5362.3%ISP proxy | Proxy providerssold by Nox Proxy | 4 |
Network & registry
IPv4 market
Holder
- Organization
- Not stated by the registry
Origin network
AS29987
US
- Name
- Sinfony6, LLC
- Type
- Hosting
- Registered
- Feb 11, 2025
- Domain
- sinfony6.com
- Website
- sinfony6.com
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jun 2026
- Current origin since
- Jun 2026 · 4 mo
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 187.31.8.0/22
- Netname
- 558360
- Registrant
- Oi S.A. - Em Recuperação Judicial
- Registrant country
- BR
- Organization
- Oi S.A. - Em Recuperação Judicial (76535764000143)
- Handle
- 187.31.8.0/22
- Created
- Dec 12, 2008
- RIR
- LACNIC
- Country
- BR
- Delegated
- Dec 12, 2008
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- CSIRT OI
- Handle
- CSIOI