173.36.127.17
Intelligence Briefing: 173.36.127.17/32
Ownership and Infrastructure
The IP address 173.36.127.17 was attributed to CISCO SYSTEMS, INC. (ASN 109) within the 173.36.0.0/14 block. Geolocation data placed the endpoint in San Jose, California, United States. Network role classification identified the address as a Web Server.
Threat Posture and Reputation
Threat assessments classified the IP as Low Risk with a Risk Score of 0. No blacklist listings, known campaigns, or threat indicators were identified during the observation period. Behavioral monitoring from 2026-09-01 to 2026-09-17 recorded zero honeypot hits, enumeration strikes, or WAF violations. The neighborhood classification was clean with an abuse density of 0.
Services and DNS Hygiene
Ports 80 (TCP) and 443 (TCP) were open, supporting HTTP and HTTPS services. TLS certificate validation linked the endpoint to ace-webhook.cisco.com, issued by IdenTrust. DNS hygiene evaluation yielded a score of 80 (Excellent), with valid SPF and DMARC records. Reverse DNS forward-confirmed the hostname ip-173-36-127-17.cisco.com.
Recommendation
The recommended action was to Allow traffic with Info severity, citing the forward-confirmed reverse DNS and legitimate endpoint status.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | CISCO SYSTEMS, INC. |
| ASN | AS109 |
| Network Name | CISCO-GEN-8 |
| CIDR Block | 173.36.0.0/14 |
| RIR | ARIN |
| Country | United States |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | ip-173-36-127-17.cisco.com |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | ip-173-36-127-17.cisco.com |
🔐 DNS Hygiene
| Hygiene Score | 80% (Excellent) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Verified |
| DNSSEC | Not signed |
| CAA | Present |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Web Server |
| Network Tier | Unknown — Insufficient routing data to classify |
🔌 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 | z-a.ctim.cisco.comace-webhook.cisco.com |
| Valid From | 2026-08-06T00:02:00+00:00 |
| Valid Until | 2027-02-21T00:01:00+00:00 |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_AES_256_GCM_SHA384 |
| Signature Algorithm | sha256RSA |
| Validity Period | 198 days |
| Serial Number | 40019FD46078FBE8786CB9DDF7717B4E |
| Thumbprint | B31228021E9A817E9679EF9CA7523B2AFED2EE62 |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 19% | 2 | 2 |
| routing | 13% | 1 | 1 |
| services | 27% | 2 | 3 |
| ownership | 27% | 2 | 3 |
| reputation | 13% | 1 | 1 |
| geolocation | 19% | 2 | 2 |
| Overall | 20% | 10 | 12 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-01 18:14:49 UTC |
| Last Seen | 2026-09-17 19:39:08 UTC |
| Profile Built | 2026-09-17 19:55:09 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 28 |
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