2603:8000:5500:4:4011:4e53:c0f8:5170 is an IPv6 address announced by AS20001, with approximate network location Fontana, United States. Its reverse DNS name is syn-2603-8000-5500-0004-4011-4e53-c0f8-5170.res6.spectrum.com. As of October 10, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.
🏢 Ownership & Registration
| Registered holder | Charter Communications Inc |
| ASN | AS20001 |
| Network Name | RRWE-IPV6 |
| CIDR Block | — |
| RIR | ARIN |
| Network registration country | United States |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | syn-2603-8000-5500-0004-4011-4e53-c0f8-5170.res6.spectrum.com |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | syn-2603-8000-5500-0004-4011-4e53-c0f8-5170.res6.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 | Unknown — Insufficient routing data to classify |
No specific classification
🔍 13 signal types · 13 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 2603:8000:5500:4:4011:4e53:c0f8:5170
Who owns the IP address 2603:8000:5500:4:4011:4e53:c0f8:5170?
2603:8000:5500:4:4011:4e53:c0f8:5170 is registered to Charter Communications Inc. Registration is held at ARIN.
Where is 2603:8000:5500:4:4011:4e53:c0f8:5170 located?
Geolocation data places 2603:8000:5500:4:4011:4e53:c0f8:5170 in Fontana, CA, United States. The local time zone is America/Los_Angeles. IP geolocation is approximate, not a precise physical address. Registration country and certificate organization addresses do not establish service location.
Is 2603:8000:5500:4:4011:4e53:c0f8:5170 malicious or safe?
2603:8000:5500:4:4011:4e53:c0f8:5170 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 2603:8000:5500:4:4011:4e53:c0f8:5170?
The reverse DNS (PTR) record for 2603:8000:5500:4:4011:4e53:c0f8:5170 is syn-2603-8000-5500-0004-4011-4e53-c0f8-5170.res6.spectrum.com. This hostname is not forward-confirmed, so it should be treated as a weak signal.
