Business phone system for new businesses.

Get a business number that rings the mobile you already carry. Add a teammate or a menu as the business grows.

Get my number See how it works ↓

Rings your mobile · Business voicemail · No per-user fees

From the team featured in
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Give your new business its own number.

Most new businesses put the owner’s personal mobile on the website and business cards. Numberline gives the business its own local or toll-free number from day one.

Running a side business? The number rings the phone you already carry, with its own greeting and voicemail. Learn how a second phone number works.

A number that belongs to the business

It stays the same when people, offices, and providers change.

Calls on the phones you already have

Ring your mobile first, then a partner or your first hire.

Voicemail you can read

Every message is recorded, transcribed, summarized, and emailed.

Texts in one shared inbox

Anyone on the team can reply as the business.

Voicemails to email & Slack. Texts & WhatsApp to your inbox.

Every voicemail is emailed with the recording, a transcript, and an AI summary. You can also get notifications in Slack. Texts and WhatsApp messages land in one shared inbox.

How voicemails are delivered →

How business texting works →

How WhatsApp works →

Start with your mobile. Add a teammate or your own AI agent when you’re ready.

Keep the same number as the business grows. Callers always hear your greeting first.

Learn how call forwarding, after‑hours routing, and AI agent connections work. See the latest startup statistics on solo founders and smaller teams.

Questions new business owners ask

Can I start with just my mobile?
Yes. Forward the business number to your mobile. Unanswered calls go to business voicemail. Add a teammate or a menu later on the same number.
Does every teammate need a paid seat?
No. Numberline is priced per business, and users are unlimited.
Can customers text the business number?
Yes. Texts land in the shared inbox, where anyone on the team replies as the business. Carriers require registration before the number can send. We file it for you, and sending starts after carrier approval. Texting is included.
What happens to calls after hours?
Set business hours on the number. After hours, callers hear a closed-hours greeting and reach business voicemail or an on-call phone.
Can I keep my existing number?
Yes, if it is eligible. Porting is free, and we handle it. Your current service keeps working until the move completes. You can also start on a new number and keep both. See the porting guide.

Give your new business its own number.

Rings your mobile from day one.

Get my number
No per-user fees No long-term contracts 30-day money-back guarantee