Pivot map
Use this map to decide whether Lookup ID accepts the lead you are holding, and what kind of lead it may return for the next step.
Pivot from here
Outputs from Lookup ID can become inputs for the next tool. These are the most relevant follow-on pivots in the library.
Lookup email addresses and mailing addresses with reverse email search to identify people and organizations in OSINT investigations.
Addresses.com provides US residential address lookups, reverse phone searches, and people finder tools for locating individuals.
Ancestry search provides access to billions of historical records including census data, vital records, immigration documents, and family trees.
Canada411 is Canada's people directory for finding individuals by name, providing addresses and phone numbers for OSINT investigations.
AI or Not is the leading AI detector for all content types: text (ChatGPT, Claude), image (Midjourney, 4o), music (Suno, Udio) & video (Veo, Kling)
Ahmia indexes Tor hidden services, enabling investigators to search .onion sites by keyword without the Tor browser.
All.io aggregates results from multiple search engines in one interface, covering web pages, tweets, YouTube, and images for OSINT.
AnswerThePublic surfaces real questions people search around any keyword — useful for OSINT subject profiling and research mapping.
AccountKiller provides direct deletion links and step-by-step instructions for removing accounts on hundreds of websites and social platforms.
Lookup email addresses and mailing addresses with reverse email search to identify people and organizations in OSINT investigations.
Addresses.com provides US residential address lookups, reverse phone searches, and people finder tools for locating individuals.
Algo VPN automates deployment of a personal WireGuard or IKEv2 VPN server in the cloud for private, secure OPSEC browsing.
Investigator Use
Lookup ID (lookup-id.com) is a Facebook numeric user ID lookup tool that converts Facebook profile URLs or usernames into their underlying numeric Facebook ID, or vice versa — connecting a numeric ID to the associated Facebook profile URL.
For OSINT investigators, Facebook numeric ID lookup is a practical utility for API-level Facebook investigation. Facebook's Graph API uses numeric user IDs rather than usernames for programmatic queries — knowing a user's ID enables direct API access to their public profile data in structured format.
Facebook profile URL to ID conversion enables investigators to work with Facebook API endpoints that require numeric IDs, accessing structured profile data that may be more comprehensive than browser-based viewing.
Numeric ID to profile URL mapping allows investigators who have encountered Facebook numeric IDs in non-browser contexts (API responses, database records, log files) to identify the corresponding public profile.
Facebook pages, groups, and post IDs can also be resolved through similar lookup tools, enabling systematic API access to public page data for investigation.
The persistence of Facebook numeric IDs even when usernames change means that an ID discovered through early investigation remains valid even if the subject changes their Facebook username — a stable identifier for tracking accounts over time.
For investigations that involve programmatic Facebook data collection using the Graph API, having the correct numeric user ID is prerequisite for API queries on specific accounts.
Limitations: Lookup ID provides the identifier translation utility — it does not provide the actual profile data. The Facebook Graph API's access to public profile data depends on applicable Facebook platform policies and the specific data fields that have been made public by the account owner.
Document the profile URLs and numeric IDs identified for any Facebook accounts investigated, along with the query timestamps.
Before You Pivot
Capture the target, search terms, and why this source is relevant before you leave the page.
Archive volatile pages, save screenshots, and keep timestamps for anything that may change.
Treat one tool as a lead source. Confirm important findings with independent sources.
Related tools
A simple utility for finding your Flickr user id number (also works for groups).
Instant Username Search checks for existing profiles and username availability across 100+ social networks and platforms in real time.
loc.alize.us displays a massiv amount of photos on a highly interactive world map. Explore photos from everyone
MostwantedHF One of the longest running skype resolvers, we provide, email2skype, api, blacklist & fast resolving
NameCheckr scans social platforms and domain registries for accounts matching a username for cross-platform OSINT identity research.
NameChk checks username and domain availability across 100+ services for rapid cross-platform identity correlation in OSINT.