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Carrier lookup · Bulk CSV · Real-time API

Phone Carrier Lookup — Identify Mobile Operator, Type & Country

Find the carrier, line type, country, and routing context behind any phone number.

bulkchecker.io helps SMS, fraud, and RevOps teams enrich phone data before campaigns, onboarding, routing, and CRM cleanup.

Carrier
T-Mobile USA
Type
Mobile
Country
United States
Get Started Sign up
Single-number trial

Enter one number to preview carrier lookup output.

Carrier
T-Mobile USA
Line type
Mobile
Country
United States
Status
Live lookup required
Need full carrier data?

Use live lookup for carrier, line type, MNP, activity, and downloadable results.

Lookup fields

What Our Carrier Lookup Returns

Get the carrier intelligence teams need to route messages, segment lists, detect risk, and clean CRM records.

Carrier name (e.g. T-Mobile USA)

Identify the current or best-known network behind the phone number.

Country code & dialing

Return dialing code, country, and normalization context for international workflows.

Line type (mobile, landline, VoIP, toll-free)

Classify numbers before SMS, voice, verification, or risk review decisions.

Number active/disconnected status

Detect numbers that should be suppressed, retried, or reviewed before outreach.

MNP (ported number) detection

Identify ported numbers so routing follows the current carrier instead of the original assignment.

High-volume lookup

Bulk Carrier Lookup

Upload large contact files and return carrier data in segments your marketing, CRM, or fraud team can use immediately.

Example output
phone,carrier,line_type,country,status,mnp
+14155550198,T-Mobile USA,mobile,US,active,false
+442071838750,BT,landline,GB,active,false

CSV upload up to 10M numbers

Process large files without building a custom lookup pipeline or asking engineering to clean every list.

Per-lookup pricing tiers

Pay by validation volume with lower unit costs for recurring campaign and CRM cleanup jobs.

Result download formats (CSV/JSON)

Export enriched records for spreadsheets, data warehouses, CRMs, suppression lists, and downstream automation.

Workflows

Use Cases

Carrier lookup is most valuable when the result changes a business decision before spend, routing, or risk exposure happens. When you specifically need live active, absent, disconnected, porting, or roaming signals, use HLR Lookup.

SMS routing optimization

Choose cleaner delivery paths and suppress numbers that are unlikely to receive SMS.

Pre-campaign list segmentation

Split mobile, landline, VoIP, inactive, and ported numbers before a campaign launches.

Fraud prevention

Use carrier, line type, and activity signals in signup, KYC, account recovery, and abuse detection flows.

For developers

API Integration

Add carrier lookup to signup forms, SMS routing systems, fraud scoring, CRM enrichment, and backend cleanup jobs.

View Carrier Lookup API 
curl -X POST https://api.bulkchecker.io/v1/carrier-lookup \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"phone":"+14155550198"}'
Free single lookup

Try Free

Check one phone number before using bulk CSV processing or API integration for production workflows.

Open free tool
Simple pricing

Pricing

Choose a lookup volume that matches your campaign size, CRM cleanup schedule, or API traffic.

Starter
$5

10K lookups for small campaigns and quick list checks.

Growth
$40

100K lookups for recurring CRM and campaign workflows.

Scale
Custom

Millions of lookups with API access, bulk upload, and support.

Alternative

Compare with Twilio Carrier Lookup

Twilio Lookup is a strong choice inside Twilio-based stacks. bulkchecker.io is built for teams that want carrier lookup plus bulk CSV, campaign segmentation, and lower-cost high-volume workflows.

Read Twilio alternative
Feature bulkchecker.io Twilio Carrier Lookup
Single lookup Yes Yes
Bulk CSV Native upload up to 10M Requires custom workflow
API Carrier lookup endpoint Lookup API
Best fit Bulk validation and campaign teams Existing Twilio platform users
FAQ

Phone Carrier Lookup FAQ

Short answers about carrier lookup, MNP, HLR, and data freshness.

Is this real-time?
API and paid lookup workflows are designed for current carrier and routing signals. Single free previews may show a limited pre-check.
Can I detect ported numbers?
Yes. MNP detection helps identify numbers that moved from their original carrier to a current carrier route.
Do you support international?
Yes. Carrier lookup supports international phone workflows, with country coverage depending on carrier data availability.
How is this different from HLR lookup?
HLR lookup is one method for checking mobile network information. Carrier lookup is the broader product result that may include carrier, line type, country, MNP, and active status fields.
Is the data live or cached?
Lookup results can combine live network-backed signals and fresh reference data depending on country, carrier, field, and lookup depth.
Is this a mobile carrier lookup and mobile network operator lookup?
Yes. This is a mobile carrier lookup and mobile network operator lookup — it returns the current MNO behind any number (post-MNP port), country, and line type. Use it for SMS routing decisions and fraud signals.