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Articles about Virtual Numbers | Tips and Advice

Read the latest stories, use cases and updates to make optimal use of your business number.

Royal Liver Building at the Pier Head on the Liverpool waterfront, inside the 0151 area

Which towns does the 0151 area code cover and what it means for your business

The 0151 area code covers Liverpool and the Wirral on both banks of the Mersey, and a business anywhere in the UK or abroad can take a 0151 number for its Merseyside customers. This article lists the towns inside the 0151 area, the boundary cases just outside it and what you need to order a number.

CallFactory / 28 May 2026 · Updated 24 Sept 2026 / 11 min read

Virtual Numbers

Comparison between a dedicated IVR server in Europe and a shared cloud API in the United States

Why a dedicated IVR server or private API works faster than building on Twilio

Twilio is the obvious starting point for a call routing or voice application, but the shared American cloud falls short for many European businesses on log retention, data residency and support costs. This blog explains why a dedicated IVR server or private API from CallFactory solves those three constraints structurally, and when Twilio remains the right choice.

CallFactory / 22 Apr 2026 / 7 min read

Virtual Numbers

Selfridges facade at the Bullring, Birmingham city centre inside the 0121 area

Which towns does the 0121 area code cover and what it means for your business

The 0121 area code covers Birmingham, Solihull and much of Sandwell, and a business anywhere in the UK or abroad can take a 0121 number for its Birmingham customers. This article lists the towns inside the 0121 area, the boundary cases just outside it and what you need to order a number.

CallFactory / 22 Apr 2026 · Updated 24 Sept 2026 / 9 min read

Virtual Numbers

Aerial view of Manchester city centre, the area covered by the 0161 code

Which towns does the 0161 area code cover and what it means for your business

The 0161 area code covers Manchester, Salford, Stockport and the neighbouring boroughs, and a business anywhere in the UK or abroad can take a 0161 number for its Manchester customers. This article lists the towns inside the 0161 area, the boundary cases just outside it and what you need to order a number.

CallFactory / 22 Apr 2026 · Updated 24 Sept 2026 / 9 min read

Virtual Numbers

London skyline with Tower Bridge and the City, the area covered by the 020 code

Which towns does the 020 area code cover and what it means for your business

The 020 area code covers all 32 London boroughs and the City, and a business anywhere in the UK or abroad can take a 020 number for its London customers. This article lists the towns inside the 020 area, the boundary cases just outside it and what you need to order a number.

CallFactory / 22 Apr 2026 · Updated 24 Sept 2026 / 9 min read

Virtual Numbers