Wholesale account application

Tell us what you're building. We'll have your trunk live in 1–2 working days.

£999/month flat for up to 5,000 UK DDIs. Inbound only — geographic and 03 delivered to your SIP free, 0800/0808 at the BT origination rate passed through at cost.

How it works. Complete the form and pay £999 for month one. We then carry out KYC, build your account, and allocate the numbers and services you need — usually 1–2 working days. From month two we bill on the 1st on 10-day BACS terms. Depending on your credit score or company accounts we may ask for a security deposit. Full refund within 30 days if it’s not the right fit. Questions first? Email help@numbergroup.com or call 0800 310 1010.

Step 1 of 4

Your company

Your registered details, so we can match you on Companies House.

Registered company name*

Trading as (if different)

Companies House number

Ofcom RID (if you have one)

Required if you intend to resell numbers in your own name — speeds onboarding either way.

Registered address

Billing email

Invoices land here on net-10 terms. Leave blank to use your primary contact email below.

Step 2 of 4

Who do we ring?

One commercial contact for the account, and (optionally) a separate technical contact for the trunk turn-up. We’ll only call the one(s) you tell us to.

Primary contact

Full name*

Title / role

Email*

Phone*

Best time to call

Technical contact (optional)

Leave blank if the primary contact handles the trunk too.

Name

Phone

Step 3 of 4

What you’re building

Helps us size the pool, pick the right ranges, and confirm the rate card before we send paperwork.

Use case*

Number types needed

01 / 02 geographic03 non-geographic0800 / 0808 freephone

Geographic preferences

We prefer to allocate the first pool manually when the account opens so you get a clean spread across your target areas. After that, use the API to add or release in bulk.

Initial DDIs (rough)

Expected growth per month

Expected inbound minutes / month

Current carrier (if switching)

Step 4 of 4

Where do we send the calls?

Most Wholesale customers take inbound straight to their platform’s public IPs — we pin the trunk, your switch holds no credentials, calls just land. If your kit prefers a registered SIP trunk we’ll set one up instead with per-trunk codec / DTMF / encryption controls.

Delivery method*

IP route (recommended)
We pin the trunk to your public IPs. No registration, no credentials on your switch.Registered SIP trunk
Auth ID + password, sip.numbergroup.com. Per-trunk codec / DTMF / encryption controls.

Platform / softswitch*

Public IPs your switch presents from*

We'll pin the trunk to these — no registration needed, no credentials sitting on your switch. Add more later via the REST API or by email.

Codec preferences

G.711a (alaw)G.711u (ulaw)G.722 (HD)G.729OpusOther

Fraud / capacity profile

Max concurrent calls

Max calls per second (CPS)

CLI presentation policy

Origination types to block

We’ll cap your trunk at these limits and alert your technical contact before bursting. Leave blank if you’d rather we use our standard wholesale defaults (no CPS cap, calls accepted from anywhere, CLI passed through).

Preferred go-live

I understand Wholesale is inbound-only. NumberGroup does not provide outbound termination on Wholesale accounts — keep your existing outbound carrier (most customers do).*

Current carrier bill (optional)

PDF or photo. Helps us double-check the rate card delivers a saving worth switching for. Max 15 MB.

Anything else?

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