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Network Information

Find information about our network infrastructure including the Planned Engineering Works programme, latest 21CN Broadband service availability and roll-out details.

Planned Engineering Works

Download details of BT Wholesale's Planned Engineering Works (PEW) programme.

21C Broadband Service Availability & Network Inventory

Find out about service availability and how to access further resources.

21CN Broadband Availability

Below you can find details about the next phase of our rollout plans.


Please note that dates shown indicate when BT Wholesale intends to be 'open for business' and start accepting orders for 21CN products from wholesale customers, including Internet Service Providers.


All forward looking plans are subject to change.  The expectations reflected on this website are reasonable, but because our rollout involves risks and uncertainties, actual results may differ materially from those expressed or implied by these forward-looking plans.

Further resources


Access to the following resources is available only to Wholesale Broadband Connect (WBC) WBC Fibre to the Cabinet (FTTC) and Fibre to the Premises (FTTP) customers of BT Wholesale. If this applies to you, please request access to secure Broadband Content via the My Apps page in My BT Wholesale.


If you already have access, please see the links below.


FTTC and FTTP exchange and cabinet availability


For key network rollout information and links to useful resources to help you plan your fibre broadband marketing activities, go to FTTC and FTTP Exchange and Cabinet Availability below.


21CN Broadband Availability and Network Inventory


For service availability and product retirement information for BT Wholesale's portfolio of 21CN products and services, go to 21C Service Availability & Network Inventory below.


Broadband Market Definition


For a list of exchanges and their Broadband Access market as defined by Ofcom, please download the file below.



21C Service Availability & Network Inventory Secure Icon

Find out about service availability and product retirement information for BT Wholesale's portfolio of 21C products and services.

Exchange Location & Network Inventory Secure Icon

This section contains the secure datasets related to 21CN network inventory and exchange locations.

Latest FTTC & FTTP Exchange & Cabinet Availability Secure Icon

Find key network rollout information and links to useful resources, such as Fibre to the Cabinet (FTTC) and Fibre to the Premises (FTTP) availability to help you plan your fibre broadband marketing activities.

BTW Broadband Availability Checker Secure Icon

This page contains current and previous versions of the Broadband Availability Checker User Guide.

Bulk Checker Secure Icon

Find out how to take advantage of a Bulk Checking facility for phone numbers.

BT Network Description

Find out about BT's Network description.

Below you can find details about BT's Network Description, which provides an overview of BT's Public Switched Telephony Network (PSTN). You can also download the Network Information Publication Principles (NIPP) Annex A and Annex B.


Network Information Publication Principles (NIPP)


NIPP is detailed information about BT's Network that is provided in accordance with Ofcom's Network Information Publication Principles. The information is published quarterly and is only available to registered users.

Operators who have an Interconnection agreement with BT and require access to NIPP should speak to their BT Commercial Manager or Technical Account Director/Manager to arrange access to NIPP.

If you already have access, go to the NIPP Data Files section which is directly below this section.

NIPP Data Files Secure Icon

Below you can download individual NIPP data files.

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