16.28.58.139
16.28.58.139 is an IPv4 address operated by Amazon Web Services (AS16509), with approximate network location Cape Town, South Africa. Its reverse DNS name is ec2-16-28-58-139.af-south-1.compute.amazonaws.com. As of October 25, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Registered holder | Amazon Data Services South Africa |
| ASN | AS16509 |
| Network Name | AMAZON-CPT |
| CIDR Block | 16.28.0.0/16 |
| RIR | ARIN |
| Network registration country | South Africa |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | ec2-16-28-58-139.af-south-1.compute.amazonaws.com |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | ec2-16-28-58-139.af-south-1.compute.amazonaws.com |
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 | 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 | |||
| 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 | AS16509 |
| Network Prefix | 16.28.0.0/16 |
| 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 | 35% | 2 | 2 |
| Overall | 18% | 5 | 5 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-10-25 14:38:45 UTC |
| Last Seen | 2026-11-11 09:34:07 UTC |
| Profile Built | 2026-10-25 14:53:53 UTC |
| Data Freshness | Live |
| Signal Types | 19 |
| Total Observations | 19 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 16.28.58.139
Who owns the IP address 16.28.58.139?
16.28.58.139 is registered to Amazon Data Services South Africa. The address falls within the 16.28.0.0/16 network block. Registration is held at ARIN.
Where is 16.28.58.139 located?
Geolocation data places 16.28.58.139 in Cape Town, WC, South Africa. The local time zone is Africa/Johannesburg. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.
Is 16.28.58.139 malicious or safe?
16.28.58.139 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 16.28.58.139?
The reverse DNS (PTR) record for 16.28.58.139 is ec2-16-28-58-139.af-south-1.compute.amazonaws.com. This hostname is forward-confirmed, meaning it resolves back to the same address.