205.178.101.89
205.178.101.89 is an IPv4 address operated by RCN-AS - RCN, US (AS6079), with approximate network location Chicago, United States. Its reverse DNS name is 205-178-101-89.s1878.c3-0.stk-ubr1.chi-stk.il.cable.rcncustomer.com. As of November 13, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Registered holder | RCN |
| ASN | AS6079 |
| Network Name | RCN-BLK-18 |
| CIDR Block | 205.178.0.0/17 |
| RIR | ARIN |
| Network registration country | — |
| Registrant address country | United States |
| Routing operator | RCN-AS - RCN, US |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | 205-178-101-89.s1878.c3-0.stk-ubr1.chi-stk.il.cable.rcncustomer.com |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | 205-178-101-89.s1878.c3-0.stk-ubr1.chi-stk.il.cable.rcncustomer.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.
| caa | Not found at queried name com |
| spf | Unknown / lookup inconclusive 205-178-101-89.s1878.c3-0.stk-ubr1.chi-stk.il.cable.rcncustomer.com |
| dmarc | Unknown / lookup inconclusive _dmarc.205-178-101-89.s1878.c3-0.stk-ubr1.chi-stk.il.cable.rcncustomer.com |
| dnssec | Unknown / lookup inconclusive 89.101.178.205.in-addr.arpa |
| fcrDns | Unknown / lookup inconclusive 205-178-101-89.s1878.c3-0.stk-ubr1.chi-stk.il.cable.rcncustomer.com |
☁️ 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
| Port | Latest capture attempt |
|---|---|
| 443 | Certificate not captured; current certificate unknown (unreachable) |
| 8443 | Certificate not captured; current certificate unknown (unreachable) |
| SANs | None |
| Valid From | — |
| Valid Until | — |
🛡️ Public Network Snapshot
| Origin ASN | AS6079 |
| Network Prefix | 205.178.0.0/17 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 16% | 1 | 2 |
| routing | 8% | 1 | 1 |
| services | 28% | 2 | 3 |
| ownership | 17% | 2 | 3 |
| reputation | 8% | 1 | 1 |
| geolocation | 12% | 2 | 2 |
| Overall | 15% | 9 | 12 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (55%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-10-06 17:42:38 UTC |
| Last Seen | 2026-11-13 07:11:11 UTC |
| Profile Built | 2026-11-13 07:19:24 UTC |
| Data Freshness | Live |
| Signal Types | 18 |
| Total Observations | 28 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 205.178.101.89
Who owns the IP address 205.178.101.89?
205.178.101.89 is registered to RCN. The address falls within the 205.178.0.0/17 network block. Registration is held at ARIN.
Where is 205.178.101.89 located?
Geolocation data places 205.178.101.89 in Chicago, IL, United States. The local time zone is America/Chicago. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.
Is 205.178.101.89 malicious or safe?
205.178.101.89 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 205.178.101.89?
The reverse DNS (PTR) record for 205.178.101.89 is 205-178-101-89.s1878.c3-0.stk-ubr1.chi-stk.il.cable.rcncustomer.com. This hostname is forward-confirmed, meaning it resolves back to the same address.