ip-address-lookup-v4.com

What It Is

IP Address Lookup is a free IP intelligence lookup platform for the security community. The site states that it has been operating since 2007. It has expanded from an IP geolocation tool into a broader investigation service covering IP/domain research, email header tracing, email abuse lookups, WHOIS, DNS blacklist checks, and traceroute, while accumulating more than 128,000 community abuse reports.

Core Capabilities and Security Positioning

This site is better suited as an “investigation and assessment tool” than as an active protection product. It can display an IP address’s city, region, country, latitude/longitude, ISP/hostname, and threat-related information, and it supports lookups against major RBLs such as Spamhaus, SORBS, Barracuda, and SpamCop. For email security, it provides Email Header Trace and Email Address Lookup, which can help assess an email’s origin and abuse history. Its data sources are disclosed relatively transparently, including MaxMind GeoIP2, Project Honeypot, StopForumSpam, regional Internet registries, and community-maintained malicious domain lists.

Deployment, Management, and Integrations

Based on the site content, deployment is mainly via online web-based queries. There is no visible support for APIs, bulk lookups, on-premises deployment, SIEM/SOAR integrations, webhooks, or browser extensions. For management and alerting, the site shows recent complaints, top offenders, and community reports, but there is no mention of account permissions, alert subscriptions, case management, or automated blocking. As a result, it is more suitable for manual verification than for a fully automated security operations workflow.

Pricing and Compliance

The site clearly emphasizes free IP intelligence tools, and does not disclose paid plans, enterprise editions, SLAs, or payment methods. Compliance certifications are also not mentioned in the main content. Its privacy statement says it only provides publicly available IP information and does not store visitor personal information beyond standard server logs, but offers no further detail.

Pros, Cons, and Best Fit

Its advantages are that it is free, easy to use, and covers common investigation entry points such as IP, email, WHOIS, blacklists, and traceroute. It also explains its geolocation accuracy: 95-99% at the country level and 50-80% at the city level. The downsides are that community complaint quality can be inconsistent, with a fair amount of false positives and subjective descriptions; it also lacks enterprise integrations, alerting, compliance, and support information. It is suitable for individual webmasters, small and midsize teams, and security researchers conducting initial checks. Large enterprises should still cross-validate results with platforms such as AbuseIPDB, VirusTotal, 微步在线, and their own logs.

Access from China

The main content does not provide information about access from mainland China, payment, or localization support, so its China access status should be considered unknown. If access is unstable, domestic threat intelligence platforms may be used as alternatives or supplements.