Broadband Network General Settings

Broadband - General configuration settings for the VoiceHost Broadband Network

Line typeAnnex A + M: Analogue/Raw Copper (PSTN)VDSL2
IPv4Static x 1 included (see below if >1 required)
IPv6/64 Subnet included (18,446,744,073,709,551,616 IPv6 addresses)

VPI: 0

VCI: 38

VLAN N/A 101 for routers with built-in VDSL2 modems

DNS - Domain Name Servers

 NameIPv4 addressIPv6 address
PrimaryVoiceHost (Private)
SecondaryVoiceHost (Private)
PrimaryCloudflare (Public)
SecondaryCloudflare (Public)
PrimaryGoogle DNS (Public)
SecondaryGoogle DNS (Public)

Unmanaged SMTP relay for sending Email:

Relay SMTP access is granted only for email sent using VoiceHost internet connections and does not require a username or password, this is an unmanaged service and faults regarding email failure are not supported.

The relay domain addresses are:


Reverse DNS and SPF:

Reverse DNS is IP address to domain name mapping - the opposite of forward (normal) DNS which maps domain names to IP addresses. Please contact support if you require reverse DNS as you may require this in order to send emails and have them accepted by other networks.

Sender Policy Framework (SPF) is an email validation system designed to prevent email spam by detecting email spoofing, a common vulnerability, by verifying sender IP addresses. If your domain does not have an SPF record, you will also need to add this as some recipient domains may reject messages from your users because they cannot validate that the messages come from an authorised mail server.

Additional IPv4 addressing and IPv6:

VoiceHost does offer additional static IPv4 addressing to its broadband customers on all products. There are some simple criteria to meet before we can allocate additional IPv4s. Please contact support for more details.

IPv6 addressing is available as a /64 subnet. This equates to 18,446,744,073,709,551,616 IPv6 addresses per connection.


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10 Meridian Way
Meridian Business Park

UK Freephone 0800 2 545454

International +44 1603904090

support [at]

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