Carrier Lookup by Phone Number
Enter any phone number to identify the country, number type, and mobile network. Detect whether a number is mobile or landline before you call or text.
Lookup carrier by phone number
For real-time carrier identification including carrier name, porting status, and reachability, use LimeCall's business phone platform.
Get Full Carrier Data — Start Free →Country and type detection is free. Full carrier name and porting data requires LimeCall API.
What is Carrier Lookup?
A carrier lookup identifies which telecommunications company currently services a phone number. When you enter a number, the lookup returns the carrier name (such as AT&T, Vodafone, or T-Mobile), the line type (mobile, landline, or VoIP), and whether the number has been ported to a different network.
Businesses rely on carrier lookups to clean their contact lists, route SMS campaigns to mobile numbers only, and avoid wasting time on disconnected or invalid numbers. Sales teams use carrier data to prioritize mobile numbers for text-first outreach and landlines for voice calls, improving connection rates across every channel.
Carrier identification works by querying number range databases and, for real-time accuracy, Home Location Register (HLR) databases maintained by mobile networks. The result tells you not just the original carrier assigned to a number range, but the current carrier after any porting events.
How Carrier Lookup Works
Number Range Database
Every country assigns number ranges to carriers. The prefix of a phone number reveals the original carrier. For example, US numbers starting with certain area codes map to specific carriers.
MNP / Porting Database
Mobile Number Portability (MNP) databases track when a number moves between carriers. Without checking MNP, you only see the original carrier — not the current one after porting.
HLR Real-time Query
Home Location Register lookups query the live mobile network to confirm the number is active, identify the current carrier, and check roaming status. This is the most accurate method available.
Why Sales Teams Need Carrier Data
Mobile vs Landline
Know if a number can receive SMS before sending. Route mobile numbers to text campaigns and landlines to voice-only outreach.
Detect Ported Numbers
Identify numbers that have moved between carriers to avoid wrong-carrier routing and failed message delivery.
Filter Invalid Numbers
Detect disconnected, deactivated, or invalid numbers before your team wastes time dialing them.
Reduce Wasted Calls by 30%
Clean your contact list with carrier data to eliminate dead numbers and focus your reps on reachable prospects.
Carrier Lookup by Country
Major mobile carriers in the top 10 markets. LimeCall supports carrier identification in 200+ countries.
| Country | Code | Major Carriers |
|---|---|---|
| United States | +1 | AT&T, Verizon, T-Mobile, US Cellular |
| United Kingdom | +44 | EE, Vodafone, Three, O2 |
| Canada | +1 | Rogers, Bell, Telus, Freedom Mobile |
| Australia | +61 | Telstra, Optus, Vodafone AU, TPG |
| Germany | +49 | Telekom, Vodafone DE, O2 DE, 1&1 |
| India | +91 | Jio, Airtel, Vi (Vodafone Idea), BSNL |
| France | +33 | Orange, SFR, Bouygues, Free Mobile |
| Brazil | +55 | Vivo, Claro, TIM, Oi |
| Japan | +81 | NTT Docomo, au (KDDI), SoftBank, Rakuten |
| South Africa | +27 | Vodacom, MTN, Cell C, Telkom Mobile |
Free vs Paid Carrier Lookup Tools
| Tool | Country Detection | Line Type | Carrier Name | Porting Status | Price |
|---|---|---|---|---|---|
| This Tool (Free) | Yes | Basic | No | No | Free |
| LimeCall API | Yes | Yes | Yes | Yes | Included in plan |
| Twilio Lookup | Yes | Yes | Yes | Yes | $0.005/lookup |
| NumVerify | Yes | Yes | Yes | Limited | Freemium |
Frequently asked questions
What is a carrier lookup? +
A carrier lookup identifies which mobile network or telephone company services a specific phone number. It reveals the carrier name (e.g. AT&T, Vodafone, T-Mobile), whether the number is mobile or landline, and whether it has been ported to a different network. Businesses use carrier lookups to validate numbers before calling or texting.
Can I identify mobile vs landline numbers? +
Yes. Carrier lookup tools classify numbers as mobile, landline, or VoIP. This is critical for SMS marketing because landline numbers cannot receive text messages. Knowing the line type before sending lets you route mobile numbers to SMS campaigns and landline numbers to voice-only outreach, saving money and improving deliverability.
What is an HLR lookup? +
HLR stands for Home Location Register. An HLR lookup queries the central database that every mobile network maintains to check whether a phone number is currently active, which network it belongs to, and whether it is roaming. HLR lookups are the most accurate way to verify mobile numbers in real time and are widely used by SMS platforms and call centers.
Why do phone numbers get ported? +
Number porting allows customers to switch mobile carriers while keeping the same phone number. For example, a customer might move from Verizon to T-Mobile but retain their existing number. This means the carrier originally assigned to a number range may no longer be the current carrier. Carrier lookups check porting databases (MNP) to return the actual current carrier, not just the original one.
Is carrier lookup legal? +
Yes, carrier lookup is legal in most countries. Carrier data is considered non-personal metadata about the network, not about the individual. However, you must comply with data protection regulations like GDPR and TCPA when using phone numbers for marketing or sales outreach. Always ensure you have consent to contact the number and that your use of lookup data complies with local telecommunications regulations.
How accurate is carrier lookup? +
Accuracy depends on the data source. Basic lookups using number range databases are around 85-90% accurate because they cannot detect ported numbers. Real-time HLR lookups that query live network databases achieve 95-99% accuracy. For sales and SMS campaigns where accuracy matters, always use a real-time lookup service like LimeCall that checks porting status and current network assignment.
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