# Number Lookup: Validate Phone Numbers | ZafeConnect

> Validate phone numbers and check line type and reachability before you send. Number lookup with ZafeConnect cuts failed messages and wasted sends.

Canonical URL: https://www.zafeconnect.com/products/numbers-lookup
Language: en
Last modified: 2026-11-09

## Numbers Lookup

URL: https://www.zafeconnect.com/products/numbers-lookup
Category: Voice & numbers

Reduce failed sends and wasted effort by checking numbers before you message them.

Number lookup checks a phone number before you use it: whether the format is valid and, in many cases, whether it is a mobile number and which network it belongs to.

Cleaner data means fewer failed messages and less wasted effort, and it helps you choose the right channel for each number.

Key capabilities:
- **Validate formats:** Catch typos and invalid numbers early.
- **Know the line type:** Distinguish mobile numbers from landlines where data is available.
- **Network information:** See which operator a number belongs to, where available.
- **Cut wasted sends:** Skip numbers that cannot receive your message.

Typical use cases:
- Cleaning customer lists before a campaign
- Checking numbers at sign-up
- Choosing between SMS and voice by line type

FAQ:
Q: What does a number lookup tell me?
A: Whether a number is valid and, where data is available, its line type and network.

Q: When should I run a lookup?
A: At sign-up, before a campaign, or periodically to keep contact lists clean.

Q: Is the data always available?
A: The level of detail varies by country and operator.