Wholesale Telephony
Numbers and voice,
from the source
Inferno Communications is a licensed UK communications provider with number ranges allocated directly from Ofcom. That means when you buy numbers through us, you're getting them from the original allocation holder — not a reseller of a reseller.
Our wholesale telephony platform is built on infrastructure we own and operate, giving carriers, resellers, and SaaS platforms a reliable and programmable foundation for voice services. Everything — from number provisioning to call routing — is exposed via API, so your platform can automate at any scale.
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A wholesale voice platform built to scale
From a handful of SIP channels to millions of minutes per month, our platform is engineered for carriers, resellers, and communications platforms that demand control and automation.
Direct Ofcom Number Allocation
We hold number ranges allocated directly from Ofcom, giving you access to UK geographic, non-geographic, and 03 numbers without the reseller mark-ups or porting delays of indirect providers.
Full API Automation
Provision numbers, configure routing, manage SIP trunks, and retrieve call records entirely via our REST API — purpose-built for resellers and platforms that need zero-touch number management at scale.
Owned Network Infrastructure
Our voice platform runs on infrastructure we control end-to-end. No third-party soft-switch providers or transit resellers — just a direct path from our network to your end points.
UK & International Termination
Competitive wholesale rates for UK geographic and non-geographic termination, with access to international destinations across the globe via direct carrier interconnects.
Flexible SIP Trunking
Standards-compliant SIP trunks with configurable capacity, codec support, and failover routing. Integrate with your own PBX, UCaaS platform, or contact centre with minimal configuration.
Fraud & Abuse Controls
Built-in call anomaly detection, spend caps, and real-time alerting protect you and your customers from toll fraud — without restricting legitimate traffic.
Automate everything
Our platform was designed from the ground up for programmatic access. If your product needs to provision numbers on behalf of customers, re-route calls in real time, or pull billing data into your own systems, the API gives you the primitives to do it.
Webhooks deliver call events to your endpoints as they happen. Number searches, reservations, and activations are synchronous operations that complete in milliseconds — no manual intervention required on our side.
Search available ranges, reserve numbers, and activate them against a SIP trunk — all in a single API workflow.
Update inbound routing rules, failover destinations, and call handling logic without any lead time or manual tickets.
Access itemised call data records and usage summaries via API to feed your own billing, reporting, and analytics systems.
Ready to add voice to your platform?
Speak with our wholesale team about number ranges, SIP interconnect, and API access — we'll get you set up quickly.