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temphonenumber
Instant Global HLR & LNP Registry Lookup

Free Phone Number Carrier Lookup

Instantly identify carrier network, line type (Mobile, Landline, VoIP), country, and validity for any phone number.

Free Phone Number Carrier Lookup
Live HLR Engine

Must include full international country prefix (e.g. +1 for USA, +44 for UK, +49 for DE).

Quick Sample Checks:

No Audit Result Generated

Enter any phone number on the left panel or click a sample check to view real-time carrier and line type data.

Developer API & Automated Agent Integration

cURL / REST API

Programmatically validate phone numbers or inspect carrier line types before sending SMS 2FA codes:

# Execute live HLR Carrier Audit via REST API
curl -X GET "https://temphonenumber.com/api/carrier-lookup?number=%2B12015550199" \
  -H "Accept: application/json"

Understanding Phone Number Carrier Lookup & HLR Audits

When verifying online accounts on services like WhatsApp, Telegram, Google, or banking portals, line classification is critical. Millions of SMS verification codes fail daily because digital platforms actively block virtual VoIP lines to prevent automated bot spam.

Mobile vs. VoIP Detection

Instantly distinguish between genuine physical mobile SIM cards (T-Mobile, Vodafone, Verizon) and cloud-hosted VoIP virtual lines (TextNow, Twilio).

MCC - MNC Carrier Identification

Extract exact 5-digit Mobile Country Code and Network Code combinations to verify the underlying telecommunication infrastructure.

Portability (LNP) Tracking

Check whether a subscriber has ported their number from landline to mobile or switched network providers recently.

Frequently Asked Telecommunication Questions

What is a Carrier Lookup Tool?

A Carrier Lookup tool queries global telecommunications databases (HLR/VLR registries and LNP data) to determine the exact mobile network operator, line classification (Mobile, VoIP, Landline), and porting history of any phone number.

Why is Line Type classification important for SMS verifications?

Major digital services like WhatsApp, Telegram, Google, Bank Apps, and Uber actively block virtual VoIP numbers (Google Voice, TextNow, Twilio) for 2FA registration. Verifying that a number is classified as genuine Mobile (Cellular) ensures 100% OTP delivery success.

What does MCC-MNC mean?

MCC (Mobile Country Code) and MNC (Mobile Network Code) form a unique 5 or 6 digit identifier for every cellular carrier worldwide (e.g. 310-260 for T-Mobile USA). This code confirms the exact physical network routing your SMS traffic.

How does number porting (LNP) affect carrier detection?

Local Number Portability (LNP) allows users to switch network operators while retaining their original phone number prefix. Our tool performs live HLR/LNP queries so you get the true current carrier, even if the number was ported recently.

Can I integrate Carrier Lookup into my codebase or automated workflows?

Yes! Our REST API and Model Context Protocol (MCP) server allow developers and automated AI agents to execute programmatic carrier lookups, line validation, and HLR checks at scale.