187.84.12.100
🏢 Ownership & Registration
| Organization | Cilnet Comunicação e Informática S.A. |
| ASN | AS28580 |
| Network Name | 406061 |
| CIDR Block | 187.84.0.0/20 |
| RIR | LACNIC |
| Country | BR |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | 187-84-12-100.metroethernet.dynamic.fst.sp.faster.net.br |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 187-84-12-100.metroethernet.dynamic.fst.sp.faster.net.br |
🔐 DNS Hygiene
| Hygiene Score | 20% (Poor) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| 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 | AS28580 |
| Network Prefix | 187.84.12.0/22 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 12% | 2 | 2 |
| routing | 8% | 1 | 1 |
| services | 8% | 1 | 1 |
| ownership | 12% | 2 | 2 |
| reputation | 8% | 1 | 2 |
| geolocation | 20% | 2 | 3 |
| Overall | 11% | 9 | 11 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-06 12:08:46 UTC |
| Last Seen | 2026-09-10 21:33:30 UTC |
| Profile Built | 2026-08-28 22:45:16 UTC |
| Data Freshness | Live |
| Signal Types | 18 |
| Total Observations | 20 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 187.84.12.100
Who owns the IP address 187.84.12.100?
187.84.12.100 is registered to Cilnet Comunicação e Informática S.A.. The address falls within the 187.84.0.0/20 network block. Registration is held at LACNIC.
Where is 187.84.12.100 located?
Geolocation data places 187.84.12.100 in Tatuí, São Paulo, Brazil. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 187.84.12.100 malicious or safe?
187.84.12.100 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 187.84.12.100?
The reverse DNS (PTR) record for 187.84.12.100 is 187-84-12-100.metroethernet.dynamic.fst.sp.faster.net.br. This hostname is not forward-confirmed, so it should be treated as a weak signal.