100.28.13.111
100.28.13.111 is an IPv4 address operated by Amazon Data Services Northern Virginia (AS14618), geolocated to Ashburn, United States. Its reverse DNS name is ec2-100-28-13-111.compute-1.amazonaws.com. As of November 4, 2026, IPDebrief rates it High Risk (70/100); no anonymizing service was detected.
Intelligence Briefing: IP 100.28.13.111/32
The address was identified as a Web Server within Amazon Web Services infrastructure located in Ashburn, Virginia. Ownership was confirmed under AS14618, Amazon Data Services Northern Virginia, within the CIDR block 100.24.0.0/13. Reverse DNS resolution returned `ec2-100-28-13-111.compute-1.amazonaws.com`, with forward resolution confirming `amazonaws.com`.
Threat assessment classified the IP as Low Risk with a risk score of 25. The address resided in a clean neighborhood with zero abuse density and no associated blacklists. Behavioral analysis revealed no honeypot hits, enumeration strikes, or WAF violations. No malicious indicators, known campaigns, or threat indicators were associated with the address.
The active service on port 443 operated as HTTPS with TLS certification issued for `*.classlink.com`. The server fingerprint identified as `awselb/2.0`. Attribution was recorded at moderate confidence with confirmed ownership.
Recommendation was to Monitor. Severity was rated low due to the clean neighborhood classification. No specific firewall rules were recommended.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Amazon Data Services Northern Virginia |
| ASN | AS14618 |
| Network Name | AMAZON-IAD |
| CIDR Block | 100.24.0.0/13 |
| RIR | ARIN |
| Country | United States |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | ec2-100-28-13-111.compute-1.amazonaws.com |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | ec2-100-28-13-111.compute-1.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 |
|---|---|---|---|
| 443 | https | tcp | — |
| Closed Ports | 22, 25, 80, 3389, 8080, 8443 (1 open / 7 scanned) | ||
| Server | Web server detected |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | *.classlink.com*.internal.classlink.com*.apps.classlink.com*.apis.classlink.com |
| Valid From | 2025-12-02T00:00:00+00:00 |
| Valid Until | 2026-12-31T23:59:59+00:00 |
🛡️ Public Network Snapshot
| Origin ASN | AS14618 |
| Network Prefix | 100.24.0.0/13 |
| Route mapping | Found |
| HSTS | Not detected |
| CSP | Not detected |
| HTTP/2 | Enabled |
🎯 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 | 50% | 2 | 3 |
| ownership | 25% | 1 | 2 |
| reputation | 0% | 0 | 0 |
| geolocation | 25% | 1 | 1 |
| Overall | 25% | 6 | 8 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-10-19 05:34:10 UTC |
| Last Seen | 2026-11-04 09:11:50 UTC |
| Profile Built | 2026-11-04 09:21:36 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 28 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 100.28.13.111
Who owns the IP address 100.28.13.111?
100.28.13.111 is registered to Amazon Data Services Northern Virginia. The address falls within the 100.24.0.0/13 network block. Registration is held at ARIN.
Where is 100.28.13.111 located?
Geolocation data places 100.28.13.111 in Ashburn, VA, United States. The local time zone is America/New_York. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 100.28.13.111 malicious or safe?
100.28.13.111 currently carries a high risk assessment, meaning indicators associated with malicious or abusive activity have been observed. This assessment is generated from continuously collected signals and can change over time.
What is the hostname for 100.28.13.111?
The reverse DNS (PTR) record for 100.28.13.111 is ec2-100-28-13-111.compute-1.amazonaws.com. This hostname is forward-confirmed, meaning it resolves back to the same address.
What ports are open on 100.28.13.111?
Responsive ports observed on 100.28.13.111 include 443. Port visibility reflects the most recent scan and may change as the host's configuration or firewall rules change.