152.243.191.203
152.243.191.203 is an IPv4 address operated by AS26599 - TELEFONICA BRASIL S.A, BR (AS26599), with approximate network location São Caetano do Sul, Brazil. It belongs to a mobile network with reverse DNS name 152-243-191-203.user.vivozap.com.br. As of November 14, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Registered holder | TELEFÔNICA BRASIL S.A |
| ASN | AS26599 |
| Network Name | 340984 |
| CIDR Block | 152.240.0.0/13 |
| RIR | ARIN |
| Network registration country | BR |
| Registrant address country | BR |
| Routing operator | AS26599 - TELEFONICA BRASIL S.A, BR |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | 152-243-191-203.user.vivozap.com.br |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 152-243-191-203.user.vivozap.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.
| caa | Not found at queried name br |
| spf | Unknown / lookup inconclusive 152-243-191-203.user.vivozap.com.br |
| dmarc | Unknown / lookup inconclusive _dmarc.152-243-191-203.user.vivozap.com.br |
| dnssec | Unknown / lookup inconclusive 203.191.243.152.in-addr.arpa |
| fcrDns | Unknown / lookup inconclusive 152-243-191-203.user.vivozap.com.br |
☁️ 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 | AS26599 |
| Network Prefix | 152.240.0.0/13 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 33% | 2 | 3 |
| routing | 13% | 1 | 1 |
| services | 18% | 1 | 2 |
| ownership | 0% | 0 | 0 |
| reputation | 13% | 1 | 1 |
| geolocation | 13% | 1 | 1 |
| Overall | 15% | 6 | 8 |
| Data Coherence | Consistent (100%) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-11-03 17:54:53 UTC |
| Last Seen | 2026-11-14 06:57:17 UTC |
| Profile Built | 2026-11-14 07:08:51 UTC |
| Data Freshness | Live |
| Signal Types | 13 |
| Total Observations | 17 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 152.243.191.203
Who owns the IP address 152.243.191.203?
152.243.191.203 is registered to TELEFÔNICA BRASIL S.A. The address falls within the 152.240.0.0/13 network block. Registration is held at ARIN.
Where is 152.243.191.203 located?
Geolocation data places 152.243.191.203 in São Caetano do Sul, 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 152.243.191.203 malicious or safe?
152.243.191.203 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 152.243.191.203?
The reverse DNS (PTR) record for 152.243.191.203 is 152-243-191-203.user.vivozap.com.br. This hostname is not forward-confirmed, so it should be treated as a weak signal.
Is 152.243.191.203 a VPN, proxy, or data center address?
152.243.191.203 is classified as a mobile network based on network ownership and behavioural analysis.