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Number Verifier is a real-time lookup service that checks whether a mobile number is active, identifies its current serving mobile operator, and determines if it’s reachable. This helps businesses reduce costs, avoid delivery failures, and improve the effectiveness of their SMS campaigns.
Number Verifier is a real-time lookup service that checks whether a mobile number is active, identifies its current serving mobile operator, and determines if it’s reachable. This helps businesses reduce costs, avoid delivery failures, and improve the effectiveness of their SMS campaigns.
Number Verifier connects directly to core mobile network infrastructure to retrieve live subscriber information — including the number’s live status and current subscriber’s network assignment. This data is sourced from the same internal systems mobile operators use for authentication and routing.
This type of lookup is often mistakenly called an «HLR query». While the term originates from the Home Location Register — a core part of mobile network architecture that holds the subscriber data being accessed — the HLR itself is not a service. Using its name to describe number validation is technically inaccurate and commercially misleading.
Each lookup provides a clear and standardized response:
Active – Number is live and able to receive traffic.
Absent – Temporarily unreachable
(e.g., switched off or out of coverage).
Barred – Service is currently restricted or blocked.
Invalid – Number is not in service or not assigned.
Unknown/Error – Network couldn’t determine a live status or didn’t respond.
Additionally, operator identifiers (MCC-MNC) reveal the number’s actual current provider, even if it has been ported.
Number Verifier is designed for maximum flexibility and ease of use.
You can choose the method that fits your workflow best:
HTTP API — Integrate directly into your platform or CRM for real-time lookups
ENUM API — Preferred by telecom operators
Web Portal — Perform manual lookups or bulk uploads with exportable reports
Number Intelligence Bot — A Telegram-based tool for instant number checks. No integration needed — simply send a number or upload a list to get live results in seconds. Ideal for quick lookups and on-the-go teams
Additionally, operator identifiers (MCC-MNC) reveal the number’s actual current provider, even if it has been ported.
Real-time network-level data — no outdated databases or estimates.
Direct access to mobile operator infrastructure — high reliability and transparency.
Unified response format — clear, consistent, and integration-friendly.
Compliance-first approach — aligned with data protection and telecom regulations.
Accessible anywhere — from telecom switches to mobile devices via Telegram.
Optimize SMS campaigns
and Troubleshoot delivery issues.
Prevent delivery failures and reduce unnecessary spend.
Validate numbers before
sending OTPs.
Confirm that the recipient is active and reachable before sending time-critical content and Clean up contact lists.
Remove invalid or inactive numbers from your database to maintain efficiency and compliance.
Pinpoint the root causes of delivery failures due to unreachable or ported numbers.
Don’t let invalid numbers disrupt your communication flow or drain your marketing budget. With BSG’s Number Verifier, you get real-time clarity on mobile reachability — no guesswork, no delays.
Get started with Number Verifier or try it instantly via our Number Intelligence Bot — no integration needed. Contact your account manager for details.
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Unified One API: Control SMS, WhatsApp, Viber, Email, Voice, and Telegram from a single endpoint.
Customizable Requests: Use dynamic parameters to personalize content by user action, segment, time zone, and behavior.
Cascade Logic: Automatically switch to the next-best channel if a message isn’t delivered or seen — no manual resends.
Webhook Support: Capture delivery receipts, open events, or replies and push them into your marketing stack in real time.
Smart Routing & Throttling: Optimize campaign performance with load management and routing logic for high-volume sends.
Secure and Scalable: OAuth2 authentication, queue monitoring, and SLA-backed delivery.
Move faster — one platform, one integration, endless reach
Simplify everything through a single, unified API
Communicate the way your customers prefer — and boost satisfaction
Save time and costs with automation that scales
Mobile Number Portability: All You Should Know To stay in play in the liberalized telecom
To prevent those useless spending, before sending anything, it makes good sense to review and clean your contact list. Here it’s time to discover what is HLR in mobile communication.
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