187.172.21.56
187.172.21.56 is an IPv4 address operated by AS8151 - UNINET, MX (AS8151), with approximate network location Mazatlán, Mexico. It belongs to a mobile network. As of November 13, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Registered holder | Uninet S.A. de C.V. |
| ASN | AS8151 |
| Network Name | 187.168.0.0 - 187.175.255.255 |
| CIDR Block | 187.168.0.0/13 |
| RIR | LACNIC |
| Network registration country | MX |
| Routing operator | AS8151 - UNINET, MX |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR Record | No PTR |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
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.
| caa | Not checked |
| spf | Not checked |
| dmarc | Not checked |
| dnssec | Not checked |
| fcrDns | Not checked |
☁️ Network Classification
| Infrastructure | Mobile |
| 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 | AS8151 |
| Network Prefix | 187.172.20.0/22 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 35% | 2 | 2 |
| routing | 25% | 1 | 1 |
| services | 25% | 1 | 1 |
| ownership | 50% | 2 | 3 |
| reputation | 25% | 1 | 1 |
| geolocation | 25% | 1 | 1 |
| Overall | 30% | 8 | 9 |
| Data Coherence | Consistent (100%) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Aging
| First Seen | 2026-07-08 13:02:53 UTC |
| Last Seen | 2026-11-05 12:43:23 UTC |
| Profile Built | 2026-11-13 07:42:58 UTC |
| Data Freshness | Aging |
| Signal Types | 18 |
| Total Observations | 19 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 187.172.21.56
Who owns the IP address 187.172.21.56?
187.172.21.56 is registered to Uninet S.A. de C.V.. The address falls within the 187.168.0.0/13 network block. Registration is held at LACNIC.
Where is 187.172.21.56 located?
Geolocation data places 187.172.21.56 in Mazatlán, Sinaloa, Mexico. The local time zone is America/Mexico_City. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.
Is 187.172.21.56 malicious or safe?
187.172.21.56 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.
Is 187.172.21.56 a VPN, proxy, or data center address?
187.172.21.56 is classified as a mobile network based on network ownership and behavioural analysis.