1. [Home](https://www.g2.com/) 2. ... 3. [Emerging AI Software](https://www.g2.com/categories/emerging-ai-software) 4. [1Lookup Discussions](https://www.g2.com/products/1lookup/discuss) [ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_382d753ae41aca1f2c704db5f82498cb/1lookup.jpg "Product Avatar Image") ](/products/1lookup/reviews) [ 1Lookup ](/products/1lookup/reviews) 0 ratings 1Lookup is a comprehensive data intelligence and lead enrichment platform engineered to solve the challenge of inaccurate B2B data. By utilizing a sophisticated Waterfall Enrichment methodology, 1Lookup aggregates data from multiple high-tier providers to deliver the most accurate and up-to-date contact information available. The platform serves as a central hub for sales, marketing, and GTM teams who require high match rates for their outbound campaigns. Core Capabilities & Technical Features: Multi-Source Waterfall Enrichment: Instead of relying on a single database, 1Lookup automatically queries multiple data layers. If the first source doesn't have the information, it moves to the next, ensuring you get the highest possible percentage of verified mobile numbers and business emails. Precision Lead Validation: 1Lookup performs real-time verification of email addresses and phone lines. This process filters out "catch-all" emails and inactive numbers, which is critical for maintaining high deliverability rates and protecting your domain reputation during cold outreach. Identity & Social Mapping: The platform allows users to bridge the gap between social profiles and professional contact data. It can take a LinkedIn URL or a basic profile and enrich it with validated professional attributes, including job titles, company firmographics, and direct contact details. Fraud Detection & Technical Enrichment: 1Lookup provides advanced IP and phone metadata insights. This includes identifying proxy usage, carrier information, and geographic location, making it an essential tool for companies looking to prevent fraud and verify the authenticity of their incoming leads. Developer-First API Access: Designed for automation, 1Lookup’s robust API allows for seamless integration into existing tech stacks. Teams can automate their entire data hygiene process, ensuring that every lead entering their CRM is enriched and validated without manual intervention. Target Use Cases: 1Lookup is built for high-growth organizations that prioritize data-driven decision-making. From streamlining GTM engineering workflows to enhancing the efficiency of sales engagement platforms, 1Lookup provides the necessary data infrastructure to eliminate "dead leads" and maximize the ROI of every outreach attempt. Whether you are conducting bulk enrichment for a large-scale campaign or individual lookups for high-value accounts, the platform delivers the precision required for modern B2B sales. Show More When users leave 1Lookup reviews, G2 also collects common questions about the day-to-day use of 1Lookup. These questions are then answered by our community of 850k professionals. Submit your question below and join in on the G2 Discussion. * * * ### 0.0 Nps Score ### All 1Lookup Discussions Search Most CommentedMost HelpfulPinned by G2Newest All DiscussionsDiscussions with CommentsPinned by G2Discussions without Comments FilterFilter Filter byExpand/Collapse Sort by Most Commented Most Helpful Pinned by G2 Newest Filter by All Discussions Discussions with Comments Pinned by G2 Discussions without Comments Sorry... There are no questions about 1Lookup yet. ## Start a New Software Discussion Have a software question? Get answers from real users and experts [Start A Discussion](/products/1lookup/discussions/new) * * * ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_382d753ae41aca1f2c704db5f82498cb/1lookup.jpg "Product Avatar Image") ### Have you used 1Lookup before? Answer a few questions to help the 1Lookup community [ Yes ](javascript:void(0))[ Yes ](https://www.g2.com/authorize?form=signup&return_to=https%3A%2F%2Fwww.g2.com%2Fproducts%2F1lookup%2Fdiscuss%3Fsmall_ask%3D1lookup) No