177.131.78.21
177.131.78.21 is an IPv4 address operated by Desktop Sigmanet Comunicação Multimídia SA (AS28649), geolocated to Limeira, Brazil. Its reverse DNS name is 177-131-78-21.shared.desktop.com.br. As of November 5, 2026, IPDebrief rates it High Risk (70/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Organization | Desktop Sigmanet Comunicação Multimídia SA |
| ASN | AS28649 |
| Network Name | 179071 |
| CIDR Block | 177.131.64.0/19 |
| RIR | LACNIC |
| Country | BR |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | 177-131-78-21.shared.desktop.com.br |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 177-131-78-21.shared.desktop.com.br |
🔐 DNS Hygiene
| Hygiene Score | 0% (None) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Not signed |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Firewalled / No Services |
| Network Tier | Unknown — Insufficient routing data to classify |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | — |
| Valid Until | — |
🛡️ Public Network Snapshot
| Origin ASN | AS28649 |
| Network Prefix | 177.131.78.0/23 |
| Route mapping | Found |
| Certificates in transparency logs | 0 certificates |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 20% | 1 | 1 |
| routing | 20% | 1 | 1 |
| services | 20% | 1 | 1 |
| ownership | 25% | 1 | 2 |
| reputation | 0% | 0 | 0 |
| geolocation | 31% | 2 | 2 |
| Overall | 19% | 6 | 7 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-11-03 18:44:56 UTC |
| Last Seen | 2026-11-05 20:40:10 UTC |
| Profile Built | 2026-11-05 20:49:37 UTC |
| Data Freshness | Live |
| Signal Types | 18 |
| Total Observations | 18 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 177.131.78.21
Who owns the IP address 177.131.78.21?
177.131.78.21 is registered to Desktop Sigmanet Comunicação Multimídia SA. The address falls within the 177.131.64.0/19 network block. Registration is held at LACNIC.
Where is 177.131.78.21 located?
Geolocation data places 177.131.78.21 in Limeira, São Paulo, Brazil. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 177.131.78.21 malicious or safe?
177.131.78.21 currently carries a high risk assessment, meaning indicators associated with malicious or abusive activity have been observed. This assessment is generated from continuously collected signals and can change over time.
What is the hostname for 177.131.78.21?
The reverse DNS (PTR) record for 177.131.78.21 is 177-131-78-21.shared.desktop.com.br. This hostname is not forward-confirmed, so it should be treated as a weak signal.