75.138.61.100 is an IPv4 address announced by AS20115, with approximate network location Spartanburg, United States. Its reverse DNS name is syn-075-138-061-100.res.spectrum.com. As of November 11, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Registered holder | Charter Communications LLC |
| ASN | AS20115 |
| Network Name | ASH-NC-75-138-48 |
| CIDR Block | 75.138.48.0/20 |
| RIR | ARIN |
| Network registration country | United States |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | syn-075-138-061-100.res.spectrum.com |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | syn-075-138-061-100.res.spectrum.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 | Firewalled / No Services |
| Network Tier | End-User — Residential ISP endpoint |
No specific classification
🔍 13 signal types · 16 observations collected
This report is generated from 13+ independent intelligence signals including
ownership records, DNS analysis, BGP routing, TLS certificates, port scanning, threat feeds,
behavioral fingerprinting, and more.
Full dossier details are available via our API.
❓ Frequently Asked Questions About 75.138.61.100
Who owns the IP address 75.138.61.100?
75.138.61.100 is registered to Charter Communications LLC. The address falls within the 75.138.48.0/20 network block. Registration is held at ARIN.
Where is 75.138.61.100 located?
Geolocation data places 75.138.61.100 in Spartanburg, SC, United States. The local time zone is America/New_York. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.
Is 75.138.61.100 malicious or safe?
75.138.61.100 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 75.138.61.100?
The reverse DNS (PTR) record for 75.138.61.100 is syn-075-138-061-100.res.spectrum.com. This hostname is not forward-confirmed, so it should be treated as a weak signal.
