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WhatsApp, Telegram, Phone & Account Checker Products

Explore WhatsApp checker, Telegram checker, phone validation, carrier lookup, email checker, and account lookup tools for bulk list cleaning, outreach preparation, and CRM data cleanup.

WhatsApp Checker Telegram Checker Phone Validation Carrier Lookup
Messaging Phone Intelligence Social & Account Exchange

Compare every ZelNum product by platform, input type, price, and returned fields before choosing a dashboard or API workflow for your list.

Data Scrubber Clean mixed contact files before choosing product-specific checks. Phone List Cleaning Prepare phone lists for phone validation, carrier lookup, SMS, and WhatsApp. Lead Enrichment Enrich lead files with validation and channel availability signals. E.164 Format Normalize numbers before validation, API jobs, and CRM imports. UK Phone Checker Check UK mobile, landline, VoIP, carrier, and segments. Number Portability Use MNP and carrier portability signals for routing workflows. International Validation Validate global phone files across countries and formats. Lead Screening Filter low-quality, duplicate, risky, or wrong-channel leads. Messaging App Checker Compare WhatsApp, Telegram, Viber, LINE, Zalo, and related checks. Social Media Lookup Choose social and account checks for phone or email files.

Country and workflow pages

Open specialized pages for country validation, WhatsApp regional checks, carrier lookup, activity signals, and account-specific inputs.

Phone validation

Bulk Phone Number Validator | Bulk CSV Validation Tool | ZelNum Phone Number Existence Check | Bulk CSV & API Checks | ZelNum US Phone Number Validator | Bulk CSV Validation Tool | ZelNum India Phone Number Verification | ZelNum Nigeria Phone Number Validator | ZelNum Brazil Phone Number Checker | Bulk Phone Account Checks | ZelNum Indonesia Phone Number Validator | ZelNum Pakistan Phone Number Checker | Bulk Phone Account Checks | ZelNum Mexico Phone Number Validator | Bulk CSV Validation Tool | ZelNum Germany Phone Number Checker | Bulk Phone Account Checks | ZelNum

Account signals

Lead Enrichment Tool | Bulk CSV & API Checks | ZelNum Telegram Activity Checker | Bulk CSV Lookup | ZelNum Viber Activity Checker | Bulk List Hygiene Signals | ZelNum Facebook Email Checker | Bulk Email Account Checks | ZelNum Instagram Number Checker | Bulk Phone Account Checks | ZelNum Amazon Email Checker | Bulk Email Account Checks | ZelNum Apple ID Number Checker | Bulk Phone Account Checks | ZelNum HTX Email Checker for HTX and Huobi Lists | ZelNum CoinW Phone Number Checker for Bulk Runs | ZelNum KuCoin Email Checker for Bulk Lists | ZelNum

Messaging Checkers

Check which numbers are registered on WhatsApp, Telegram, Viber, and other messaging apps | plus account age.

Phone Intelligence

Use phone validation and carrier lookup when a messaging or CRM list needs deeper number-quality enrichment.

Social & Account Checkers

Brand, social, and consumer-account verification across phone and email inputs.

Cian

Number CheckerCheck if a phone number is registered on Cian$1 / 10K

Exchange & Risk Checkers

Crypto exchange account checks used in risk review, account-quality, and user-quality workflows.

FAQ

Frequently asked questions

Common questions about this page, the underlying products, and the verification workflows we run for B2B teams.

How many checker products does ZelNum offer and across how many platforms?
ZelNum offers verification across 23+ platforms, grouped into 8 product clusters: phone validation, carrier lookup, WhatsApp, Telegram, messaging apps (iMessage, Viber, RCS, Signal, LINE, Zalo, Band), social platforms (Facebook, Instagram, X/Twitter, Snapchat, Messenger), account verification (Apple ID, Microsoft, Amazon), and crypto exchanges (Binance, KuCoin, HTX, CoinW).
Do all products share the same API and CSV upload?
Yes. Every product on this page is accessible through the same REST API and the same CSV bulk upload | one account, one credit pool, all platforms. No per-platform integration required.
How is pricing structured across these products?
Pricing is pay-as-you-go, denominated per 10,000 lookups, and varies by platform difficulty | phone validation and carrier lookup start at $4/10K, while complex platform checks (Binance, Microsoft) run higher. See the pricing page for the full matrix.
Can I bundle products or build a custom workflow across multiple checkers?
Yes. Most B2B teams chain 3–5 checkers | for example: phone validator → carrier lookup → WhatsApp checker → fraud score. Inside the app, upload one CSV and run multiple checks sequentially, or call the API in a single batch job.
Do you offer higher-volume support?
Yes. For high-volume customers (>10M lookups/month), we offer priority processing, custom rate limits, and a named support contact. Contact sales for higher-volume pricing.
Trust and data handling

Trust, privacy, and responsible use

Use authorized data only. ZelNum provides verification signals, not identity proof, legal approval, or permission to contact a person.

Trust CenterCentral hub for company, security, privacy, support, and responsible-use guidance.About ZelNumCompany context, product boundaries, supported workflows, and contact paths.Security and Data HandlingHow uploads, API requests, verification results, and customer responsibilities are described.Privacy PolicyHow account data, uploaded files, support requests, billing references, and privacy choices are handled.Support CenterHelp path for uploads, API integration, billing questions, account access, and product workflows.
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