18.101.12.43
18.101.12.43 is an IPv4 address operated by Amazon Data Services Spain (AS16509), geolocated to Madrid, Spain. Its reverse DNS name is ec2-18-101-12-43.eu-south-2.compute.amazonaws.com. As of November 5, 2026, IPDebrief rates it Low Risk (25/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Organization | Amazon Data Services Spain |
| ASN | AS16509 |
| Network Name | AMAZON-ZAZ |
| CIDR Block | 18.100.0.0/15 |
| RIR | ARIN |
| Country | Spain |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | ec2-18-101-12-43.eu-south-2.compute.amazonaws.com |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | ec2-18-101-12-43.eu-south-2.compute.amazonaws.com |
🔐 DNS Hygiene
| Hygiene Score | 60% (Good) |
| SPF | 2/2 domains |
| DMARC | 2/2 domains |
| FCrDNS | Verified |
| DNSSEC | Not signed |
| CAA | Not configured |
| Domains Checked | 2 domains |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Web Server |
| Network Tier | Hosting — Infrastructure provider without advanced routing |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 80 | http | tcp | — |
| 443 | https | tcp | — |
| Closed Ports | 22, 25, 3389, 8080, 8443 (2 open / 7 scanned) | ||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | ec2.web.eu-south-2.prod.diagnostic.networking.aws.devv6.web.diagnostic.networking.aws.devweb.diagnostic.networking.aws.devhttps.web.diagnostic.networking.aws.devv6.ec2.web.eu-south-2.prod.diagnostic.networking.aws.devhttps.v6.web.diagnostic.networking.aws.dev |
| Valid From | 2026-10-05T00:00:00+00:00 |
| Valid Until | 2027-04-20T23:59:59+00:00 |
| TLS Protocol | Tls12 |
| Cipher Suite | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 |
| Signature Algorithm | sha256RSA |
| Validity Period | 197 days |
🛡️ Public Network Snapshot
| Origin ASN | AS16509 |
| Network Prefix | 18.100.0.0/15 |
| Route mapping | Found |
| HSTS | Not detected |
| CSP | Not detected |
| HTTP/2 | Not detected |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 19% | 1 | 2 |
| routing | 13% | 1 | 1 |
| services | 35% | 2 | 4 |
| ownership | 0% | 0 | 0 |
| reputation | 0% | 0 | 0 |
| geolocation | 13% | 1 | 1 |
| Overall | 13% | 5 | 8 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Moderate (55%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-10-28 03:56:02 UTC |
| Last Seen | 2026-11-05 04:36:10 UTC |
| Profile Built | 2026-11-05 04:52:02 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 27 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 18.101.12.43
Who owns the IP address 18.101.12.43?
18.101.12.43 is registered to Amazon Data Services Spain. The address falls within the 18.100.0.0/15 network block. Registration is held at ARIN.
Where is 18.101.12.43 located?
Geolocation data places 18.101.12.43 in Madrid, MD, Spain. The local time zone is Europe/Madrid. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 18.101.12.43 malicious or safe?
18.101.12.43 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 18.101.12.43?
The reverse DNS (PTR) record for 18.101.12.43 is ec2-18-101-12-43.eu-south-2.compute.amazonaws.com. This hostname is forward-confirmed, meaning it resolves back to the same address.
What ports are open on 18.101.12.43?
Responsive ports observed on 18.101.12.43 include 80, 443. Port visibility reflects the most recent scan and may change as the host's configuration or firewall rules change.