Validate phone numbers and emails in n8n with the verified 1Lookup node
1Lookup has a verified community node for n8n with 17 operations across email, phone, IP, domain and search. On n8n Cloud, search for 1Lookup in the nodes panel. On self-hosted n8n, install @momentum-labs/n8n-nodes-1lookup from Settings, Community Nodes. Add your API key as a 1Lookup API credential and every operation is ready.
n8n verified the 1Lookup node, so it runs on n8n Cloud
n8n reviewed the 1Lookup node in May 2026 and added it to n8n Cloud. Cloud users find it in the nodes panel. Self-hosted users install the package once from the Community Nodes screen.
One node covers every resource: pick Email, Phone, IP, Domain or Search, then the operation. Turn on Simplify Response to get just the data object for easier mapping, and connect the node to an AI Agent to let the agent validate numbers on its own.
What you can do
Phone intelligence
Validate a phone, run HLR, MNP and number type lookups, check for spam, scrub for do-not-call status, or find a mobile number.
Email validation and enrichment
Validate an email, enrich a work email from a name and company domain, or append an email from a name and postal address.
Usable as an AI agent tool
The node is marked usable as a tool, so an n8n AI Agent can call 1Lookup to check a lead in the middle of a conversation.
Self-hosted or Cloud
The same node and credential work on n8n Cloud and on self-hosted n8n, with no runtime dependencies.
The 1Lookup node gives n8n 17 operations
Phone: Validate Phone
Validity, carrier and line type for a number.
Phone: Check Phone for Spam
Spam and abuse reputation for a number.
Phone: HLR Lookup
Live network status and carrier from the mobile network.
Phone: MNP Lookup
Ported status and current carrier.
Phone: Number Type Lookup
Mobile, landline, VoIP or another number type.
Phone: Scrub Phone
Match status, phone type and do-not-call status.
Phone: Append Phone
A phone number from a name and postal address.
Phone: Find Mobile
A mobile number from a profile URL, work email or personal email.
Phone: Look Up Contact by Phone
Contact details from a phone number.
Email: Validate Email
Deliverability and risk for an email address.
Email: Append Email
An email address from a name and postal address.
Email: Enrich Email
A work email from a name and company domain.
Email: Look Up Contact by Email
Contact details from an email address.
IP: Look Up IP Address
Location, network and risk signals for an IP.
IP: Look Up Contact by IP
Contact details linked to an IP address.
Domain: Analyze Domain SEO
Authority, backlink and traffic signals for a domain.
Search: Look Up Search Intent
Web search results, related questions and searches for a query.
How to add 1Lookup to an n8n workflow
Start your free 1Lookup trial and copy your API key
Sign up at app.1lookup.io and start the 7-day free trial. Then open API Keys in the dashboard and copy your key. You paste it once into the connection and every workflow reuses it.
Find or install the node
On n8n Cloud, search for 1Lookup in the nodes panel (an owner may need to allow verified community nodes in the admin panel). On self-hosted n8n, go to Settings, Community Nodes, Install and enter @momentum-labs/n8n-nodes-1lookup.
Create a 1Lookup API credential
Open the node, create a new 1Lookup API credential, paste your API key and use the built-in test to confirm it connects.
Pick the resource and operation, then branch on the result
Choose a resource such as Phone and an operation such as Validate Phone, map the input, execute the node, then add an IF node on the result.
1Lookup also has its own apps on Zapier and Make.
Each one is a native 1Lookup app: search for 1Lookup, paste your API key once, and add a lookup step to any workflow.
Use cases
Clean a Google Sheet of leads
Read rows from Google Sheets, run Validate Phone on each, then write line type and carrier back to the sheet.
Give an AI agent a phone check
Attach the 1Lookup node to an AI Agent as a tool, so the agent can validate a number a lead types into a chat before booking a call.
Screen new CRM contacts
On a new HubSpot or Pipedrive contact, run Validate Email and Check Phone for Spam, then tag the contact with the result.
Enrich accounts with work emails
For each new account, run Enrich Email from the contact's name and company domain, then Validate Email before outreach.
Frequently asked questions
Is the 1Lookup n8n node verified?
Yes. n8n verified the node in May 2026 and it is available on n8n Cloud. On self-hosted n8n you install it as a community node.
What is the package name?
@momentum-labs/n8n-nodes-1lookup. The node is called 1Lookup and the credential is called 1Lookup API.
Can an n8n AI agent use 1Lookup?
Yes. The node is marked usable as a tool, so you can connect it to an AI Agent node and let the agent call it.
What does it cost?
The node is free. Each operation uses 1Lookup credits from your plan, the same as an API call.