Lookup for developers

Validate phone numbers and email addresses at signup or before you send. Stop paying to text landlines or dead numbers, keep disposable emails out of your CRM, and spot ported numbers or SIM swaps with Bird.

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Check the details. Make the connection.

Check carrier, line type, porting, and email deliverability from one integration before you send or verify. Query phone and email signals from your backend code, terminal, or AI assistant.

Catch typos at signup.
Keep bad emails out of your list.

A mistyped address at checkout means a lost order confirmation, and disposable or dead mailboxes drive up bounce rates that hurt your sender reputation. Validate addresses in real time to suggest spelling fixes while the customer is still on the form, or check up to 1,000 addresses per batch before you launch a campaign.

A correction is a suggestion. The customer chooses.Explore email lookup
Illustrative product records. These controls change the example only; no request or purchase is made.

Check the line and carrier.
Stop wasted texts and SIM swap fraud.

Avoid paying to send SMS to landlines or dead numbers. Identify the serving carrier, line type, and porting status in a single call, and layer on live network presence, SIM swap detection, or a credibility score when verifying high-risk signups and logins.

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Illustrative product records. These controls change the example only; no request or purchase is made.

Explore Lookup.

Prevent bounced emails, wasted SMS spend, and account takeover fraud from a single API.

Lookup API

Validate phone numbers and email addresses from your backend, CLI, or AI assistant before you send.

Email validation

Catch mistyped, disposable, and dead email addresses at signup or in batches of up to 1,000.

Phone number lookup

Confirm a number is valid and get its country, carrier, and line type in one API call.

Line type

Distinguish mobile numbers from landlines, VoIP, and toll-free lines so you do not waste SMS spend.

Carrier lookup

Identify the current serving carrier and original issuing network to route traffic and debug delivery.

Number porting

See whether a number has moved between carriers and when the latest port was recorded.

Network presence

Query the live mobile network to check whether a handset is active and reachable before contacting it.

Roaming

Detect whether a subscriber is roaming abroad and see which network is currently serving the device.

SIM swap

Spot recent SIM card changes before sending one-time passcodes or approving sensitive account actions.

Credibility score

Use a 0 to 100 risk score to flag suspicious or low-trust phone numbers during signup and checkout.

Scale without
losing control.

Organize teams in workspaces, control API access, and trace changes through audit logs.

WorkspacesTeam rolesAPI authentication
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Start with Lookup.
Build across channels with Bird.

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