Phone Carrier Lookup
Checking a number you're permitted to contact? Enter it in international format and we'll return its carrier and line type — so your team routes calls and SMS to numbers that are actually reachable.
For verifying and reaching business contacts you're authorised to contact. Not for tracking, monitoring or identifying private individuals. See our Acceptable Use Policy.
How it works
- 1Enter a number you're authorised to contact, in international format (e.g. +1 415 555 2671).
- 2We return its carrier and line type.
- 3Route SMS to textable mobiles and skip disconnected lines.
Frequently asked
What is a carrier lookup?
It identifies the network that operates a number, plus its line type — used to route calls and SMS to your contacts correctly and avoid wasted sends.
Why does line type matter?
Texting a landline or VoIP number wastes spend. Knowing the line type keeps SMS campaigns on textable mobiles.
Is this for tracking someone?
No. It returns network and line-type data to keep outreach to your own contacts deliverable — it does not locate, track or identify a person, and must only be used for numbers you're authorised to contact.
Can I check a whole list at once?
This free tool checks one at a time. To verify a full list — email, phone and company together — upload a CSV to BounceBlock and preview your first 100 rows free.
Stop wasting hours on dead leads.
Upload your list and see how clean it really is — free, in under two minutes.