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bulkchecker.io
Bulk verification command center

Phone Number Verification & Carrier Lookup at Scale — 40+ Platforms

One bulk checker for phone validation, email verification, carrier & HLR lookup, and account checks across 40+ platforms. Clean campaign lists, enrich carrier data, and flag risky records before they reach your CRM, fraud review, or API workflow.

Coverage
200+ country
Input
Free Trial
Volume
NO Code + API
Payment
No credit card
Verification run
global-leads.csv
Cleaned
84%
Reachable
11%
Inactive
5%
Risk
Phone + carrier

Active status, carrier, line type, country, and VoIP risk.

API
Social platform lookup

WhatsApp, Telegram, Facebook, Instagram, Apple ID, Amazon, and more.

HOT
Download clean segments
3 files ready
valid.csv inactive.csv risk-review.csv
Why bulkchecker.io

Why bulkchecker.io

One platform for carrier lookup, platform registration checks, and high-volume list cleaning — built for teams that verify millions of records.

Global coverage

Validate phone and account data across international datasets, messaging apps, social platforms, and crypto exchanges.

Real data signals

Return practical status fields such as registered/not registered, active status, carrier, line type, country, and risk signals.

Cost-effective scale

Start with free single lookups, then move to volume pricing for bulk CSV/TXT files and campaign-sized datasets.

API integration

Use API endpoints for real-time form validation, registration checks, bulk jobs, and automated CRM hygiene.

Core products

Phone, WhatsApp & Telegram Verification Tools

Validate phone numbers and carrier data, then check WhatsApp, Telegram, and 40+ platform registrations on the same list — all from one dashboard.

Supporting tools

Split secondary products by lookup signal

Phone-based products

Use these tools when the lookup starts from a phone number and you need account presence, age, recovery, or platform-coverage signals.

Workflow

How It Works

Use bulk upload for list cleaning, or connect the API for real-time checks inside your product and data pipelines.

1
Upload numbers

Upload CSV/TXT files, paste a small list, or send identifiers through the API.

2
Verify

Run carrier, platform, account, registration, age, and risk checks against the selected dataset.

3
Download results

Export clean segments with status fields your marketing, CRM, compliance, and fraud teams can use.

Pricing snapshot

Simple Pricing — Pay by Lookup Volume

Start free with single-number tools, then scale with volume pricing for bulk CSV files or API workflows. Pay only for the lookups you run.

View pricing details
Phone validation
$4
per 10K lookups
WhatsApp
$1
per 10K lookups
Telegram
$3
per 10K lookups
Crypto checks
$2+
per 10K lookups
Bulk CSV/TXT upload and API access are available. Payment: USDT only.
Customer proof

Trusted by 1000+ Businesses

Growth teams, agencies, CRM operators, fintech risk teams, and crypto projects use bulk verification to remove bad records before they become expensive.

GrowthOps
SMSForge
KYCDesk
CRMStack
AirdropLab
LeadPilot
B2B marketing agency

"We clean WhatsApp and SMS lists before campaigns, which helps reduce wasted budget and improves delivery planning."

Crypto growth team

"Exchange account checks help us flag risky signup patterns before reward distribution."

CRM operations lead

"Bulk validation gives our sales team cleaner phone and email records before they hit the pipeline."

For Developers

Add verification to forms, signup flows, and data pipelines

Use API endpoints for phone validation, carrier lookup, WhatsApp checks, Telegram checks, and bulk asynchronous workflows.

curl -X POST https://api.bulkchecker.io/v1/phone-validation \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"phone":"+14155550198"}'
{
  "valid": true,
  "active": true,
  "carrier": "T-Mobile USA",
  "line_type": "mobile",
  "risk_score": 0.08
}
FAQ

Frequently Asked Questions

What platforms do you support?
bulkchecker.io supports phone validation, carrier lookup, messaging apps such as WhatsApp and Telegram, social platforms, account verification products, and crypto exchange account checks.
How accurate is the data?
Accuracy depends on the platform, country, and data source. Results are designed for list cleaning, segmentation, risk review, and operational decision-making.
Can I try for free?
Yes. You can start with free single-number tools before moving to bulk files or API workflows.
Is bulk upload supported?
Yes. CSV and TXT uploads are supported for bulk verification workflows, with segmented result downloads for valid, inactive, risky, and enriched records.
Do you have an API?
Yes. API pages are available for phone validation, carrier lookup, WhatsApp checks, and Telegram checks.