187.21.210.197
187.21.210.197 is an IPv4 address announced by AS28573, with approximate network location Santos, Brazil. It belongs to a mobile network with reverse DNS name bb15d2c5.virtua.com.br. As of November 11, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Registered holder | Claro NXT Telecomunicacoes Ltda |
| ASN | AS28573 |
| Network Name | 122419 |
| CIDR Block | 187.20.0.0/14 |
| RIR | LACNIC |
| Network registration country | BR |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | bb15d2c5.virtua.com.br |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | bb15d2c5.virtua.com.br |
DNS Posture
Results describe the queried names. SPF, DMARC and CAA are domain policies, not requirements for every IP. DNSSEC here describes reverse DNS; inconclusive validation does not mean unsigned.
Not assessed: 0 conclusive IP DNS checks.
| spf | Not checked |
| dmarc | Not checked |
| fcrDns | Not checked |
| dnssec | Not checked |
| caa | Not checked |
☁️ Network Classification
| Infrastructure | Mobile |
| Service Purpose | Firewalled / No Services |
| Network Tier | End-User — Residential ISP endpoint |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Closed Ports | 22, 25, 80, 443, 3389, 8080, 8443 (0 open / 7 scanned) | ||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | — |
| Valid Until | — |
🛡️ Public Network Snapshot
| Origin ASN | AS28573 |
| Network Prefix | 187.21.128.0/17 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 25% | 1 | 1 |
| routing | 25% | 1 | 1 |
| services | 25% | 1 | 1 |
| ownership | 0% | 0 | 0 |
| reputation | 0% | 0 | 0 |
| geolocation | 0% | 0 | 0 |
| Overall | 12% | 3 | 3 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Stale
| First Seen | 2026-07-10 07:53:08 UTC |
| Last Seen | 2026-10-07 17:48:31 UTC |
| Profile Built | 2026-11-11 14:37:31 UTC |
| Data Freshness | Stale |
| Signal Types | 20 |
| Total Observations | 26 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 187.21.210.197
Who owns the IP address 187.21.210.197?
187.21.210.197 is registered to Claro NXT Telecomunicacoes Ltda. The address falls within the 187.20.0.0/14 network block. Registration is held at LACNIC.
Where is 187.21.210.197 located?
Geolocation data places 187.21.210.197 in Santos, SP, Brazil. The local time zone is America/Sao_Paulo. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.
Is 187.21.210.197 malicious or safe?
187.21.210.197 currently carries a low risk assessment, meaning no significant threat indicators have been observed. This assessment is generated from continuously collected signals and can change over time.
What is the hostname for 187.21.210.197?
The reverse DNS (PTR) record for 187.21.210.197 is bb15d2c5.virtua.com.br. This hostname is not forward-confirmed, so it should be treated as a weak signal.
Is 187.21.210.197 a VPN, proxy, or data center address?
187.21.210.197 is classified as a mobile network based on network ownership and behavioural analysis.