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About

1Lookup is an enterprise-grade data verification and intelligence platform that gives businesses real-time, high-accuracy validation for phone numbers, email addresses, and IP addresses through a unified API, helping ensure data quality, reduce fraud, and protect user experiences. It aggregates data from authoritative sources, including carrier networks, FCC databases, and global threat feeds, with daily updates to deliver sub-second verification results that detect invalid, risky, or fraudulent identities, improve deliverability, and flag disposable or suspicious contact data. The core services include phone validation with HLR and carrier lookup, phone spam and risk detection, email address validation with SMTP checks and disposable domain screening, and IP intelligence for precise geolocation, proxy/VPN detection, and risk scoring, all accessible via modern REST API calls that scale to millions of daily lookups without rate limits.

About

BulkChecker is a B2B contact verification and data quality platform for teams that need to clean phone number and contact lists before outreach, CRM updates, or messaging workflows. Users can upload CSV or TXT files, run bulk phone validation, carrier lookup, WhatsApp, Telegram, Viber, and other messaging-app checks, then export structured results for cleaner segmentation and operations. The platform supports no-code batch uploads and API-based verification workflows. BulkChecker helps identify invalid, unreachable, duplicate, recycled, or incorrectly formatted numbers, and provides useful signals such as carrier, line type, registration status, and active indicators where available. It is designed for growth, sales, marketing, data operations, and fraud-prevention teams that need faster list cleaning and more reliable contact data at scale.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Developers, product teams, and risk/compliance professionals who need an API to validate and verify user phone numbers, email addresses, and IPs in real time to improve data quality, prevent fraud, and reduce risk

Audience

Growth, sales, marketing operations, data operations, CRM, lead generation, agencies, SaaS companies, and fraud-prevention teams that work with large contact datasets and need reliable phone number and messaging-app verification.

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

$49 per month
Free Version
Free Trial

Pricing

$1 per 10K checks
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

1Lookup
United States
www.1lookup.io

Company Information

BulkChecker
Founded: 2026
Hong Kong
bulkchecker.io

Alternatives

Alternatives

Antideo

Antideo

Bizmindz Technologies LLP
RealPhoneValidation

RealPhoneValidation

RealValidation

Categories

Categories

Integrations

Telegram
Viber
WhatsApp

Integrations

Telegram
Viber
WhatsApp
Claim 1Lookup and update features and information
Claim 1Lookup and update features and information
Claim BulkChecker and update features and information
Claim BulkChecker and update features and information