18.166.108.18
18.166.108.18 is an IPv4 address operated by Amazon Web Services (AS16509), with approximate network location Chicago, China. Its reverse DNS name is ec2-18-166-108-18.ap-east-1.compute.amazonaws.com. As of October 3, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Registered holder | Amazon Data Services Hong Kong |
| ASN | AS16509 |
| Network Name | AMAZON-HKG |
| CIDR Block | 18.166.0.0/15 |
| RIR | ARIN |
| Network registration country | Hong Kong |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | ec2-18-166-108-18.ap-east-1.compute.amazonaws.com |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | ec2-18-166-108-18.ap-east-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 | Web Server |
| Network Tier | Unknown — Insufficient routing data to classify |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 443 | https | tcp | — |
| 22 | ssh | tcp | Banner detected |
| Closed Ports | 25, 80, 3389, 8080, 8443 (2 open / 7 scanned) | ||
| Server | Web server detected |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | *.espressif.comdocs.espressif.comespressif.com |
| Valid From | 2026-07-06T00:00:00+00:00 |
| Valid Until | 2027-01-20T23:59:59+00:00 |
| TLS Protocol | Tls12 |
| Cipher Suite | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 |
| Signature Algorithm | sha256RSA |
| Validity Period | 198 days |
🛡️ Public Network Snapshot
| Origin ASN | AS16509 |
| Network Prefix | 18.166.0.0/15 |
| Route mapping | Found |
| HSTS | Enabled |
| 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 | 35% | 2 | 2 |
| routing | 25% | 1 | 1 |
| services | 25% | 1 | 1 |
| ownership | 25% | 1 | 2 |
| reputation | 25% | 1 | 1 |
| geolocation | 25% | 1 | 1 |
| Overall | 26% | 7 | 8 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Moderate (55%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-30 15:45:04 UTC |
| Last Seen | 2026-10-05 07:28:10 UTC |
| Profile Built | 2026-10-03 15:54:12 UTC |
| Data Freshness | Live |
| Signal Types | 24 |
| Total Observations | 25 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 18.166.108.18
Who owns the IP address 18.166.108.18?
18.166.108.18 is registered to Amazon Data Services Hong Kong. The address falls within the 18.166.0.0/15 network block. Registration is held at ARIN.
Where is 18.166.108.18 located?
Geolocation data places 18.166.108.18 in Chicago, 上海市, China. The local time zone is Asia/Shanghai. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.
Is 18.166.108.18 malicious or safe?
18.166.108.18 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 18.166.108.18?
The reverse DNS (PTR) record for 18.166.108.18 is ec2-18-166-108-18.ap-east-1.compute.amazonaws.com. This hostname is forward-confirmed, meaning it resolves back to the same address.
What ports are open on 18.166.108.18?
Responsive ports observed on 18.166.108.18 include 443, 22. Port visibility reflects the most recent scan and may change as the host's configuration or firewall rules change.