What does the carrier lookup API return?

Current carrier, line type (mobile, landline, VoIP), validity, portability status with ported date, original carrier before porting, OCN and SPID, LRN, country and timezone for any phone number.

Is this a live HLR lookup or a static database?

Live HLR-backed lookups. Portability and network status come from live registries, not a stale prefix table, so recently ported numbers resolve to the right network.

How does carrier lookup reduce SMS routing costs?

You stop paying to terminate messages to landlines, invalid or inactive numbers, and you route by the real current carrier instead of the number prefix, avoiding misrouted traffic and failed deliveries.

Can I detect if a number was ported?

Yes. The response includes a ported flag, the ported date, and both the original and current carrier, which is also a strong signal for SIM-swap and fraud checks.

Carrier lookup API with live HLR data

Real current carrier, line type and portability status for any number. Route SMS by facts, not prefixes, and stop paying to message dead lines.

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GET /api/hlr/+14155550123 200 OK

{
  "network": {
    "carrier": "T-Mobile US",
    "type": "mobile",
    "original": { "carrier": "AT&T Mobility" }
  },
  "number": {
    "valid": true,
    "mobile": true,
    "ported": true,
    "ported_date": "2025-11-04",
    "timezone": "America/Los_Angeles"
  }
}

Live

HLR-backed answers, not a stale prefix database

Ported

flag, date and original carrier on every response

$25/mo

self-serve entry plan, volume pricing as you scale

One lookup, three expensive problems solved

Every response carries carrier, line type and portability together, so one call covers routing, validation and fraud checks.

Cheaper SMS routing

Route by the real current network, skip landlines and invalid numbers, and cut failed-delivery spend.

Number validation

Validity, line type and timezone at signup keeps fake and unreachable numbers out of your database.

SIM-swap signals

Fresh porting with a carrier change is a classic account takeover signal. It's in every response, ready for your risk engine.

Carrier lookup API questions

Start looking up carriers today

Self-serve plans from $25/month. Need millions of lookups? We'll price a volume deal.

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