Carrier Lookup
Know where a number routes before you rate, route, or risk-score it.
Carrier Lookup returns routing intelligence such as LRN, mobile portability, and carrier-of-record context so telecom teams can make better call-routing, fraud, and cost decisions.
curl -X POST https://api.voicetel.com/v2.1/info/lrn/ \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"apikey": "YOUR_API_KEY",
"cid": 2015551234,
"dst": 2125551234
}'curl -X POST https://api.voicetel.com/v2.1/info/tfresporg/ \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"apikey": "YOUR_API_KEY",
"tn": 8005551234
}'curl -X POST https://api.voicetel.com/v2/iNumbering/portInAvailability/ \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"apikey": "YOUR_API_KEY",
"tnList": {
"tnItem": [
{ "tn": 2015551234 },
{ "tn": 2015555678 }
]
}
}'Workflows
Three workflows, one API.
LRN lookup at signup time, fraud-check time, or call-setup time over REST and webhooks. Portal lookup with shareable URLs and exportable history for ops teams, with no API key required for users with portal access. Batch CSV for lists.
Full reference: VoiceTel API v2.2 › LRN lookup · Info API v2.1 › Toll-free RespOrg · VoiceTel API v2.2 › Port-in availability.
- Real-time API REST · webhook
- Portal lookup No API key
- Batch CSV
- Returns Per number
Lookup modes
-
Real-time API
Query numbers during call setup, signup, fraud checks, or support workflows.
-
Portal queries
Give operations teams a simple manual lookup path for support and troubleshooting.
-
Routing context
Use carrier-of-record and portability signals as inputs, not as the only routing control.
One real number is worth ten case studies.
Run one query through the API or paste one in the portal. See the routing intelligence on a number you already know the answer for, then trust it on the ones you don't.
