TrustIP knowledge base

Evidence-first IP troubleshooting guides

The maintained guides explain what common IP signals mean, why databases can disagree, where false positives come from, and how to verify a result without over-interpreting it.

A deliberately focused knowledge base

TrustIP does not publish unrelated articles simply to increase page count. The knowledge base stays focused on network identity, IP classification, geolocation, reputation evidence, shared addressing, and responsible interpretation of diagnostic results.

Each maintained guide addresses a distinct user problem and includes its own analysis rather than changing a few keywords around the same template. Short legacy pages are not treated as equivalent to the maintained guides.

How the guides are reviewed

Technical background is checked against internet standards, network registries, provider documentation, or other primary references where possible. Automation may assist editing, but it is not treated as a factual source. Material updates change the visible review date; cosmetic edits do not.

Maintained long-form guides

IP ReputationHow to Read an IP Risk Report Without OverreactingLearn how to evaluate IP reputation signals, data sources, timestamps, network type, and conflicting results before acting on a risk score.Network TypesResidential, Mobile, Hosting, and Enterprise IPs ExplainedUnderstand common IP network types, what each classification really means, and why network type should not be confused with trust or identity.Anonymity NetworksVPN, Proxy, and Tor Detection: Methods and LimitsSee how VPN, proxy, and Tor detection works, why private exits are difficult to identify, and how to interpret false positives and false negatives.Service AccessChatGPT or Claude Not Working? A Network-First ChecklistTroubleshoot AI service access by checking IP location, account region, DNS, browser state, IPv6, payment country, rate limits, and outages.TroubleshootingThe IP Troubleshooting Decision Tree: Match the Fix to the SymptomChoose the right workflow for blocked websites, streaming region errors, email rejection, account challenges, and incorrect IP geolocation.Email DeliverabilityYour IP Is on an Email Blocklist: A Practical Removal PlaybookStep-by-step process to identify which email blocklist flagged your IP, fix the root cause, and request delisting from Spamhaus, SpamCop, and other lists.PrivacyWebRTC Leaks: Why Your VPN Shows the Wrong IP and How to Fix ItUnderstand how WebRTC exposes your real IP address despite a VPN, how to test for the leak in any browser, and how to disable it properly.GeolocationWhy Your IP Shows the Wrong City (or Country) and How to Fix Each CauseThe six real reasons IP geolocation is wrong—registry lag, CGN, anycast, VPN exits, mobile gateways, stale databases—and the correction path for each.