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CIDR
/19 · 8.2K IPs
ASN
Oi S.A. - Em Recuperacao Judicial
Reverse DNS
No PTR record
Blocklisted
Checking…
Scanning blocklists

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

80/100
Trusted
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Network Allocation for 187.31.39.123

CIDR range
187.31.32.0/19
IP range (int)
3,139,379,200 — 3,139,387,391
Prefix length
/19
Organization
Sinfony6, LLC
ASN
AS14571
ASN name
Oi S.A. - Em Recuperacao Judicial
Location
Brazil
Coordinates
-22.830500, -43.219200
Accuracy radius
1000 km
Regional Internet Registry
LACNIC
Allocated
2008-12-12
Data source(s)
maxmind_asn, ipinfo_lite, maxmind_city, maxmind_country
Last updated
2026-07-04 09:19:01

Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.

Announced prefix
Origin AS
Announcement samples
18,178
Last seen
2026-07-26 07:04:06

RIR Ownership History

Atom feed ⇲

Allocation changes captured weekly from regional internet registry (RIR) delegation files for ranges that have contained this IP.

Date Event From To
2026-07-25 New Allocation BR

See the full history for 187.16.0.0/12.

Frequently Asked Questions

Who owns 187.31.39.123?

187.31.39.123 is allocated to Sinfony6, LLC (AS14571), registered in Brazil.

Where is 187.31.39.123 located?

The geolocation for 187.31.39.123 maps to Brazil based on MaxMind GeoLite2 data. Accuracy depends on the provider and may represent the ISP's regional hub rather than the exact endpoint.

What network is 187.31.39.123 on?

187.31.39.123 belongs to the 187.31.32.0/19 network block announced by AS14571. This range contains 8,192 addresses.

Does 187.31.39.123 have a reverse DNS record?

Reverse DNS (PTR) records are resolved live when you visit this page. If a PTR record exists, it appears in the Reverse DNS field above. PTR records map IP addresses back to hostnames and are commonly used for email authentication and network diagnostics.

Neighbors

Other addresses in the same /24.

Related

Last updated: 2026-07-26 08:02:10 UTC
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