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Deepline’s phone waterfall detects the contact’s region and routes to the right providers automatically. No need to choose between regional templates — just describe who you need phone numbers for and Deepline handles routing. Coverage varies by region and input quality. The waterfall calls the provider operations declared by the current Play. It returns the first mobile number that meets the acceptance condition. Billing depends on the pricing unit of each operation that runs. Measure coverage on representative records.

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How do I find mobile phone numbers with Claude Code?

In Claude Code, type:
With Codex:

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What does the phone number waterfall do step by step?

The phone waterfall detects the contact’s region, routes to the right providers, validates each number for mobile type, and returns the first valid mobile number with country code. The configured route runs in order; the waterfall stops on the first valid hit.
1

Detect contact region

Deepline infers region from company domain, address, or country fields in your data.
2

Route to region-optimized providers

The right providers fire based on region — no need to pick a regional template.
3

Validate phone number

Returned numbers are validated for format and mobile type (filtering out landlines).
4

Return mobile number

The first valid mobile number is returned with country code.

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Which providers does the phone waterfall use?

The phone waterfall uses 3 providers: enrich_phone_finder, Dropleads mobile-finder, and LeadMagic mobile-finder. Deepline analyzes domain TLD, address fields, and country codes to pick the right provider configuration.
Phone number find rates vary significantly by region. US/Canada and Western Europe usually have stronger coverage. APAC and LATAM coverage is lower.
Related tasks: Find Work Email | Find Decision Makers | Find LinkedIn Profile

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Frequently Asked Questions

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How much does it cost to find a mobile phone number with Deepline?

Phone lookup prices depend on the provider selected for the contact’s region. As standalone tool-rate examples, a successful DropLeads Mobile Finder result costs 0.76 managed credits, and the required Trestle Phone Validation costs another 0.21 managed credits when that candidate is checked. These are per-tool rates, not a total lookup quote. Actual cost depends on which steps execute and whether you use managed billing or BYOK.

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Can I find phone numbers in bulk from a CSV?

Yes. type /deepline-gtm find mobile numbers for leads.csv and Deepline reads your column headers, detects regions for each contact, and enriches every row with the appropriate provider chain. Always pilot with 3-5 rows first to verify coverage for your target regions.

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What data do I need to find a mobile phone number?

For the best results, provide first name, last name, company name, and domain. Deepline uses these to both identify the contact and detect their region. If you have a LinkedIn URL, that can also help resolve the contact’s identity before the phone lookup.

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How accurate is mobile phone number lookup?

Deepline filters out landlines and validates phone number format before returning results. Hit rates vary by region: in our testing, US/Canada and Western Europe reach stronger coverage, while APAC and LATAM are lower. Single-provider enrichment commonly leaves coverage gaps. Waterfall enrichment improves match rates by querying multiple providers in sequence. Specific lift varies by ICP and region..

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Why use Deepline for finding mobile phone numbers?

Deepline detects region automatically from your data — no need to segment lists by geography or pick regional templates. Ask for phone numbers from your IDE or terminal and Deepline routes to the right providers. Since it runs in your coding environment, phone enrichment chains directly into larger automation pipelines. B2B data decays at roughly 22.5% per year (HubSpot via Cognism). A checked multi-provider workflow helps recover contacts when one source is stale.